Change 1m² into cm², mm² and km²
Answers
1m² = 10000cm²
1m² = 1000000mm²
1m² = 1e-6km²
Related Questions
3. What is the mass of an object that is experiencing a net force of 200 N and an acceleration of 500 ms?
Answers
Answer:
The answer is 0.4 kgExplanation:
The mass of the object can be found by using the formula
\(m = \frac{f}{a} \\ \)
where
f is the force
a is the acceleration
From the question we have
\(m = \frac{200}{500} = \frac{2}{5} \\ \)
We have the final answer as
0.4 kgHope this helps you
What acceleration will you give to a 27.8 kg
box if you push it with a force of 75.7 N?
Answer in units of m/s2.
Answers
Answer:
2.72m/s²
Explanation:
Given parameters;
Mass of box = 27.8kg
Force on box = 75.7N
Unknown:
Acceleration = ?
Solution:
Force is the product of mass and acceleration;
Force = mass x acceleration
Now insert the parameters and solve;
75.7 = 27.8 x a
a = \(\frac{75.7}{27.8}\) = 2.72m/s²
Explain and reason why the the moon rotates around the earth every lunar cycle
Pls explain ASAP
Best answer will be marked as BRAINLIEST✨
Answers
Velocity is vector quantity because??
Answers
Velocity is vector quantity because it has both magnitude and direction.
Explanation:
velocity is a vector quantity because the person always returns to the original position,the motion would never result in a change in a position.
A man carry a load on his head doesn't do work .Explain
Answers
Carrying a load on one's head can indeed be considered as a form of work. Work, in physics, is defined as the transfer of energy from one object to another, resulting in the displacement of the second object in the direction of the applied force.
When a person carries a load on their head, they are exerting force against the gravitational pull on the load, which requires energy expenditure. Although it may not be the traditional notion of work, such as performing a job or physical labor, carrying a load on the head still involves the application of force over a distance. The person's muscles are engaged, and energy is expended to maintain balance, support the load, and resist the force of gravity acting on it. Furthermore, carrying a load on the head requires coordination and skill to maintain equilibrium, ensuring that the load does not fall off or cause any harm. Therefore, it can be considered a form of physical work, albeit in a different context than what we typically associate with employment or labor.For such more questions on work
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a flywheel rotating at 12 rev/s is brought to rest in 6 s. the magnitude of the average angular acceleration of the wheel during this process is:
Answers
The rate at which the speed and direction of a moving object vary over time. Acceleration is 4 m/s2.
What is Acceleration?A point or object going straight ahead is accelerated when it accelerates or decelerates.
Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.
Acceleration is a vector quantity since it has both a magnitude and a direction. A vector quantity is also velocity. The velocity vector change during a time interval divided by the time interval is the definition of acceleration.
w i =12×2π rad
=24πs/ ra
=6/ 24π=−4π sec 2rad
Therefore, The rate at which the speed and direction of a moving object vary over time. Acceleration is 4 m/s2.
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In a Compton scattering experiment, an x-ray photon scatters through an angle of 17.0∘
from a free electron that is initially at rest. The electron recoils with a speed of 2,520 km/s.
(a) Calculate the wavelength of the incident photon.
(b) Calculate the angle through which the electron scatters.
Answers
The wavelength of the incident photon is 0.0313 nm. The angle through which the electron scatters is 163.0°.
Compton scattering is a process in which an incident photon collides with a free electron, causing the photon to lose energy and scatter at an angle. The scattered photon has a longer wavelength than the incident photon, and the electron recoils at a certain speed.
To solve this problem, we can use the conservation of energy and momentum. Let λ be the wavelength of the incident photon, m be the mass of the electron, c be the speed of light, and θ be the scattering angle.
(a) To calculate the wavelength of the incident photon, we can use the Compton scattering formula:
λ' - λ = h/mc(1 - cosθ)
where λ' is the wavelength of the scattered photon and h is Planck's constant. Since the electron is initially at rest, we can assume that the initial momentum is zero. Thus, we have:
h/λ = h/λ' + mv'/c
where v' is the speed of the recoiling electron. Solving for λ, we get:
λ = h/(mc)(1 - cosθ) = 0.0313 nm
(b) To calculate the angle through which the electron scatters, we can use the conservation of momentum in the x and y directions:
p = p'cosθ + mvx
0 = p'sinθ + mvy
where p is the momentum of the incident photon, p' is the momentum of the scattered photon, and vx and vy are the x and y components of the recoil velocity, respectively. We also have the energy conservation equation:
p'c + mc^2 = pc(1 - cosθ) + √(m^2c^4 + v'^2c^2)
where the first term on the right-hand side is the momentum of the scattered photon, and the second term is the energy of the recoiling electron.
Using these equations and the given values, we can solve for the angle θ. We find that the electron scatters through an angle of 163.0°.
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A radioactive decay is illustrated. Which radioactive emission is a product of this decay?
A)Alpha
B)beta
C)gamma
D)positron
Answers
The radioactive decay is shown in the image attached to this answer
Answer:
Alpha
Explanation:
An alpha decay is said to have occurred when the mass number of the daughter nucleus decreases by four units and the atomic number of the daughter nucleus decreases by two units.
If we look at the equation from left to right, we will notice that the mass number of the daughter nucleus decreased by four units and the atomic of the daughter nucleus number by two units compared to that of the parent nucleus leading to the emission of an alpha particle.
how much force is needed to accelerate a 3kg skateboard at 5 m/s2
Answers
Answer:
15 N
Explanation:
3 kg x5 m/ s square
15( kg x m/s square)
how do you find work when only given the angle a sled is pulled, the mass, the coefficent of kinetic friction and distance
Answers
Answer:
W = F * s
Work done equals applied force * distance traveled
Apparent weight = M g (1 - sin θ) since some of applied force will lighten sled
μ = coefficient of kinetic friction
F cos θ = force applied to motion of sled
s = distance traveled
[μ M g (1 - sin θ)] cos θ * s = work done in moving sled
Note that F = μ M g if applied force is in the horizontal direction
For this activity, you are going to play the part of a mission control support team member who helps plan astronauts’ daily schedules and lives. We will focus on one of the most important activities for anyone, but especially for astronauts as they try to stay strong and healthy in space—eating!
You will design a days’ worth of meals that you would like to eat as an astronaut, and suggest any modifications that would need to be put in place to make the food amenable to a zero-gravity/non-refrigerated environment.
Step 1: Pick Three Meals
Choose a breakfast, lunch, and dinner. For now, your only rules are to avoid bread, soda, and ice cream—anything else is up for grabs! Each meal must consist of a protein, grain, fruit and vegetable.
Step 2: Modify Your Meals
What about your meals might need to change in order for them to be edible in space? You will likely have to do some research on each food item you selected to determine what special packaging or preparation is required.
Step 3: Write a Menu
In a word processing program, write a menu for the astronaut who will be eating these meals. For each meal, include:
What the meal is
Special packaging that is required (remember, some foods can fly away more easily than others!)
Any preparations that need to be done before consuming (ie, hydrating freeze-dried food)
To complete this activity, submit your menu with all of the above specifications addressed.
Answers
As an astronaut meal planner, here is a menu for a day's worth of meals in space includes Breakfast, Lunch and Dinner.
Breakfast:
Scrambled Eggs with Vegetables
Special Packaging: Individual vacuum-sealed pouches
Preparation: The scrambled eggs with vegetables will be precooked and dehydrated. Astronauts will rehydrate the meal with hot water, stir, and allow it to sit for a few minutes before consuming. This ensures the eggs and vegetables rehydrate properly in the zero-gravity environment.
Lunch:
Teriyaki Chicken Stir-Fry with Rice
Special Packaging: Sealed pouches for each component (chicken, vegetables, rice, and sauce)
Preparation: The chicken, vegetables, and rice will be precooked and dehydrated separately. The teriyaki sauce will be in a separate pouch. Astronauts will rehydrate each component individually with hot water, then mix them together in a resealable pouch. After a few minutes, the meal will be ready to eat.
Dinner:
Grilled Salmon with Quinoa and Roasted Vegetables
Special Packaging: Vacuum-sealed pouches for each component
Preparation: The salmon will be cooked and then freeze-dried for preservation. The quinoa and roasted vegetables will be precooked and dehydrated separately. Astronauts will rehydrate the quinoa and vegetables with hot water, then warm up the salmon using a food warmer. The components will be combined on a tray and secured with fasteners to prevent them from floating away.
Modifications for space include using dehydration and freeze-drying techniques to remove water content from the food while preserving nutrients. Vacuum-sealed and sealed pouches are used to prevent spoilage and maintain freshness. Rehydration with hot water is necessary to restore the food's texture and taste.
Additionally, it's important to consider portion control and individual packaging to prevent cross-contamination and maintain food safety. The use of condiments and seasonings may be limited to avoid loose particles floating in the spacecraft.
By designing meals that are easy to prepare, consume, and clean up, astronauts can enjoy nutritious and satisfying meals while adapting to the unique challenges of the zero-gravity and non-refrigerated environment in space.
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name the planet which is nearest to sun
Answers
Answer:
So, Mercury is the closest planet to the Sun.
Explanation:
Mercury
EXPLANATION:-
It is the first planet in the solar system (position wise) hence very close to the sun
Why is data sent digitally from space probes instead of using an analog device?
Answers
Hope this helps!
But they would be able to use analog devices in the future, if they create suitable protection for it.
Two small stereo speakers are driven in step by the same variable-frequency oscillator. Their sound is picked up by a microphone arranged as shown. For what fundamental frequency does their sound at the speakers produce constructive interference? The speed of sound is 340m/sec.
Answers
Answer:
The fundamental frequency at which the sound of speakers at the microphone produce constructive interference is 801.076458 Hz
Explanation:
For a given arrangement having constructive interference, we have;
R₁ - R₂ = 2·x = 0 + n·λ
The distance from one speaker to the microphone. R₁ = 4.50 m
The distance between the two speakers = 2.00 m
The angle formed between the direction from the microphone to the speaker closest and the directional path between the speakers = 90°
Therefore, by Pythagoras's theorem, the distance from the speaker furthest from the microphone, to the microphone, 'R₂' is given as follows;
R₂ = √(4.50² + 2.00²) = √(24.25) = 4.9244289009 ≈ 4.924
∴ R₂ ≈ 4.9244289 m
R₂ - R₁ = 4.9244289 m - 4.5 m = 0.4244289 m
For constructive interference, R₂ - R₁ =0.4244289 m = n·λ
For n = 1, we have;
R₂ - R₁ =0.4244289 m = n·λ = 1 × λ = λ
λ = 0.4244589 m
f = v/λ = 340 m/sec/(0.4244289 m) ≈ 801.076458 Hz
Therefore the lowest possible fundamental frequency at which the speakers produce constructive interference, f = 801.076458 Hz
The frequency at which the speakers produce a constructive interference is 801.076 Hz.
Given here,
\(R_1\)- The distance from one speaker to the first microphone = 4.5 m
\(R_2\) - The distance between microphone and second speaker = ?
The distance between the speakers = 2 m
From Pythagorean theorem,
\(R_2= \sqrt {4.50^2 + 2.00^2}\\\\R_2 = \sqrt{24.25} \\\\R_2= 4.924\)
So,
\(R_2 - R_1 = 4.9244 \, {\rm m} - 4.5 \, {\rm m} \\\\R_2 - R_1 = 0.4244 \, \rm m\)
For constructive interference,
\(R_2 - R_1 = m\lambda\)
Since, m = 1
λ = 0.4244 m
Now, frequency can be calculated by the formula,
\(f = \dfrac v\lambda\)
So,
\(f = \dfrac {340{\rm \ m/sec}}{(0.4244\; \rm m) }\\\\f = 801.076{\rm \ Hz}\)
Therefore, the frequency at which the speakers produce a constructive interference is 801.076 Hz.
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Why does conduction occur more slowly in gases than in solids?
Answers
Donna sent her grandson a birthday present. The box weighed 0.875 kilograms and the present itself weighed 6,800 grams. a. What was the gross weight of the package in kilograms
Answers
The gross weight of the package in kilograms that Donna send to her grandson as birthday present is 7.675 kg.
The weight of the box in which Donna has sent the present (w1)= 0.875 kg. Now we know, 1 kg = 1000 grams . So , 0.875 kg = 0.875 * 1000 = 875 grams.
Hence w1=875 grams is the weight of the box in which the present is there.
The weight of the present itself (w2)=6800 grams.
So, the gross weight of the package = w1+w2= 875 +6800 grams = 7675 grams.
So, the gross weight of the package ( the box+the gift) = 7675grams =7675 / 1000 = 7.675 kg.
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Work-energy theorem: how much work must be done by frictional forces in slowing a 1000-kg car from 26. 1 m/s to rest?.
Answers
The work that must be done by the frictional force in slowing a 1000 kg car from 26.1 m/s to a stop is 3.41 x 10⁵ J
WorkWork in physics is the amount of energy given to move an object.
The magnitude of the work of an object is equal to the kinetic energy experienced by the object.
So,
W = KE
W = ½ mv²
We have,
Mass of the car (m) = 1000 kg
Deceleration (v) = 26.1 m/s
Now, calculate the work that must be done:
W = KE
= ½ mv²
= ½ (1000) (26.1)²
= 340,605 = 3.4 x 10⁵ J
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A device that assures the delivery of electric power without interruption is a(n)?
Answers
you have an oil burner running at 80% and are firing a nozzle rated at 1.50 gph how many btu,s can you get?
Answers
An oil burner running at 80% and firing a nozzle rated at 1.50 GPH can produce: 168,000 BTUs per hour.
The burner efficiency is one factor to consider when calculating the BTU output of an oil burner. BTUs, or British Thermal Units, are a measure of energy that indicates how much heat an oil burner can produce.
BTUs are used to compare different types of heating systems, including furnaces, boilers, and heat pumps, to determine their energy output. To determine the BTU output of an oil burner, you need to know the nozzle size, as well as the burner efficiency.
In this case, the oil burner is running at 80% efficiency, and it is firing a nozzle rated at 1.50 GPH.
First, you need to convert the GPH (gallons per hour) to BTUs per hour. To do this, you can use a conversion factor of 140,000 BTUs per gallon of oil.1.50 GPH x 140,000 BTUs per gallon = 210,000 BTUs per hour
Next, you need to adjust for the burner efficiency by multiplying the BTUs per hour by the burner efficiency percentage.80% x 210,000 BTUs per hour = 168,000 BTUs per hour.
Therefore, an oil burner running at 80% and firing a nozzle rated at 1.50 GPH can produce 168,000 BTUs per hour.
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Ideas for uniform circular motion?This is for a physics lab if u can help please do
Answers
The time of motion of the satellite is 1.65 hours. The speed of the satellite from the centre of the Earth is 26,945.35 km/h.
What is the time of motion of the satellite?This is the motion of an object in which the object travels in a straight line and its velocity remains constant along that line as it covers equal distances in equal intervals of time, regardless of time duration.
The time of motion of the satellite in hours is calculated as follows;
t = ( 99 min / 1 ) x ( 1 hour / 60 min )
t = 1.65 hours
The speed of the satellite from the centre of the Earth in km/h is calculated as follows;
v = ( 2πr ) / ( t )
where;
r is the distance of the satellite from the centre of the Earth
The position of the satellite above the surface of the Earth = 705 km
The radius of Earth = 6,371 km
The total distance of the satellite from the centre of the Earth = 705 km + 6,371 km = 7,076 km
v = ( 2π x 7076 ) / ( 1.65 )
v = 26,945.35 km/h
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The complete question is attached with the answer below.
What is the weight of a 328N emperor penguin?
Answers
Answer:
Weight = 3217.68
Explanation:
N times Gravity = weight
Gravity= 9.81
The weight of the emperor penguin whose mass is 328 Kg on is 3214.4 Newtons.
What is Weight ?
Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -
W = m x g
where -
[m] is the mass of object
[g] is acceleration due to gravity
Given is the mass of an emperor penguin as 328 Kg.
We can write -
Mass [m] = 328 kg
Acceleration due to gravity [g] = 9.8 m/s²
Therefore, the weight of the emperor penguin will be
W[P] = m x g = 328 x 9.8 = 3214.4 Newtons
Hence, the weight of the emperor penguin whose mass is 328 Kg on is 3214.4 Newtons
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Best Answer will receive BRAINLIEST One consequence of Newton's third law of motion is that __________. A. every object that has mass has inertia B. a force acting upon an object increases that objects acceleration C. all actions have equal and opposite reactions D. none of the above
Answers
One consequence of Newton's third law of motion is that all actions have equal and opposite reactions. (C)
In fact, that's pretty much what the law itself says in so many words.
Answer:
Its C All actions have equal and opposite reactions
Explanation:
Ive done this before
What fitness level is helpful to know when a person is starting an exercise program
Answers
Answer:
There are various areas that should be considered to access the fitness level of an individual.
Explanation:
Knowing the specific details can help an individual to set realistic fitness goals, monitor their progress, and retain motivation. Fitness is typically measured in four main areas: cardiovascular fitness, muscle strength and endurance, flexibility, and composition of the body. It is important to evaluate these vital components of fitness so that one gets a fair knowledge of present fitness level and plan for the future accordingly.
Which statement correctly represents the law of the conservation of mass?
F. The number of atoms on the reactants side is more than the number of atoms on the product side.
G. The number of atoms on the reactant side is less than the number of atoms on the product side.
H. The number of atoms on the reactant side equals the number of atoms of the product side.
J. The number of atoms on the reactant side is double the number of atoms on the product side.
Answers
Answer:
The statement H is the correct one: The number of atoms on the reactant side equals the number of atoms on the product side.
Explanation:
The law of conservation of mass states that mass can not be created or destroyed, just can be transformed. The mass of a system can not be added or removed, thereby the transfer of mass in a reaction must remain constant.
This implies that the mass of the molecules on the side of the reactants before the reaction must be equal to the mass of the atoms on the side of the products after the reaction.
Therefore, the statement H is the correct one: The number of atoms on the reactant side equals the number of atoms on the product side.
I hope it helps you!
determine the values of mm and nn when the following charge of a proton is written in scientific notation: 0.000000000000000000160 cc . enter mm and nn , separated by commas.
Answers
The value of m = 1.6 and n = -19
What do you understand by charge?When there are more or fewer protons in an atom than electrons, the substance has an electric charge. While electrons have a negative charge, protons have a positive charge. If a substance has more protons than electrons, it is positively charged; if it has more electrons, it is negatively charged.
The ability to conduct electricity is a characteristic of many fundamental, or subatomic, components of matter. As an illustration, protons and neutrons both have positive charges but electrons have a negative charge.
given: \(q=0.000000000000000000160c\)
Scientific notation of \(q= 1.6 X 10^{-19}\)
now compare with the standard form \(m X 10^{n}\)
we can say m = 1.6 and n = -19
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The work done in moving a block across a rough
surface and the heat energy gained by the block can
both be measured in
Answers
Answer:
i think it is Joules (J).
... any unit of energy.
A few good ones:
... Joules
... Calories
... Ergs
... Newton-meters
... Dyne-centimeters
What does Charles law state?
Answers
Answer:
Image result for what does charles law state
The physical principle known as Charles' law states that the volume of a gas equals a constant value multiplied by its temperature as measured on the Kelvin scale (zero Kelvin corresponds to -273.15 degrees Celsius).
Explanation:
the silvered wall of a vacuum bottle takes care of heat flow by
Radiation
Convection
Conduction
Conduction and convection
Answers
Challenge Exercises: The following exercises are of a greater difficulty than the earlier ones, though still matched to our course objectives. These exercises are not intended to prepare you for test questions, instead they expose you to more complex, real-world scenarios. You may struggle more with these questions than the Routine exercises. Remember your problem solving strategies! Read carefully and repeatedly. What words are familiar in the problem statement? What terms have been defined in the class, versus what is being provided to you within the exercise itself? Who can you work with for assistance? 8. The power generated by a stationary cyclist depends on both the resistance on the fly-wheel and the cadence (i.e. how fast the cyclist is pedaling). A University of Calgary study looked at fixed levels of exertion and drew curves for the relationship between resistance and cadence. Let's examine the relationship between resistance and cadence at a fixed activity level (i.e. perceived level of exertion). The article cites that they used a Hill function of the form (R+a) · (v + b) = b(Ro + a), where R is the resistance and Ro is the maximal resistance (both in Newtons), v is the cadence (in revolutions per minute), and a and b are other constants. (a) For the lowest activity level used in the study, the maximal resistance was 75 Newtons. Also, when resistance dropped to 0, cadence was 180 rpm; when resistance was 10 Newtons, cadence dropped to 100 rpm. Use this data to find values of the constants a and b. (b) Including the constants from part (a), express the formula from the article explicitly in the form of R as a function of v. (c) What is the long-term behavior of R? Is this behavior meaningful in context?
Answers
a) Given that the Hill function is (R+a) · (v + b) = b(Ro + a)Here, R = resistance, Ro = maximal resistance, v = cadence, a, b are constantsGiven, maximal resistance, Ro = 75 Newtons,Resistance, R = 0, cadence, v = 180 rpmResistance, R = 10 Newtons, cadence, v = 100 rpmWe have to calculate a and b.For R = 0, v = 180, 10a + 180b = 75b, and b = (10a/−100 + 9/2)For R = 10, v = 100, 20a + 100b = 750 − 75
a.Substitute the value of b in the above equation.20a + 100(10a/−100 + 9/2) = 750 − 75a20a − 10a + 450 = 750 − 75a10a = 300a = 30Substitute the value of a in the equation (10a/−100 + 9/2) = b(10/−100 + 3/2)b = 15/16Therefore, the value of a is 30 and the value of b is 15/16. Hence, we got the value of a and b.b) Here the Hill function is (R+a) · (v + b) = b(Ro + a)Substituting the value of a and b in the equation, we get (R + 30) (v + (15/16)) = (15/16)(75+30)R + 30 = (15/16)105R = (105(v + (15/16)) − 2475)/15R = (7(v + (15/16)) − 165)/15
Therefore, the formula for R as a function of v is given by R = (7(v + (15/16)) − 165)/15.c) Long-term behavior of R is the value of R when v approaches infinity. Thus, the limiting value of R when v approaches infinity is Ro, i.e. 75 Newtons. Thus, the long-term behavior of R is that as the cadence increases, the resistance approaches its maximal value. This behavior is meaningful in the context of a stationary bicycle since maximal resistance represents the level of physical resistance that a cyclist may face.
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What happens to a circuit's resistance (R), voltage (V), and current (1) when
you change the thickness of the wire in the circuit?
A. V and I will also change, but R will remain constant.
B. R and I will also change, but V will remain constant.
O C. R, V, and I will all remain constant.
OD. R and V will also change, but I will remain constant.
Answers
When you change the thickness of the wire in a circuit, option B. the resistance (R) and current (I) will also change, but the voltage (V) will remain constant.
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). As the thickness of the wire changes, the cross-sectional area changes, which in turn affects the resistance. Thicker wires have a larger cross-sectional area, resulting in lower resistance, while thinner wires have a smaller cross-sectional area, resulting in higher resistance. Therefore, changing the thickness of the wire will cause a change in resistance.
According to Ohm's Law (V = IR), the voltage (V) in a circuit is equal to the product of the current (I) and the resistance (R). If the voltage is kept constant, and the resistance changes due to the thickness of the wire, the current will also change to maintain the relationship defined by Ohm's Law. When the resistance increases, the current decreases, and vice versa.
However, it's important to note that changing the thickness of the wire will not directly affect the voltage. The voltage in a circuit is determined by the power source or the potential difference applied across the circuit and is independent of the wire thickness. As long as the voltage source remains constant, the voltage across the circuit will remain constant regardless of the wire thickness. Therefore, the correct answer is option B.
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