Answer:
The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
If you walked at a speed of 3 m/s and 15 seconds of time has passed how far have you traveled
Answer: 45 meters
Explanation:
3 m/s ==> 3 meters/second
15 seconds * 3 meters/second=
15*3/1=
15*3=45 meters
Acceleration is displacement divided by time interval
True
Or False
Explain why the diffraction pattern of the hair appears in the horizontal direction that it does.
The diffraction pattern of the hair appears in the horizontal direction that it does because the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair.
1. When light encounters an obstacle, such as a hair, diffraction occurs. Diffraction is the bending and spreading of light waves around the obstacle.
2. The hair acts as a single slit, allowing light to pass through the narrow gap around it.
3. As the light waves pass through this gap, they interfere with each other, causing constructive and destructive interference.
4. This interference results in a diffraction pattern that appears in the horizontal direction, which is perpendicular to the direction of the hair.
5. The pattern is characterized by a series of bright and dark bands, with the bright bands representing areas of constructive interference and the dark bands representing areas of destructive interference.
In conclusion, the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair, which causes interference patterns to form perpendicular to the direction of the hair.
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Describe how Kirschhoff's Circuit Laws relate to the law of conservation of energy
Answer:
Given that voltage is a measurement of energy per unit charge, Kirchhoff's loop rule is based on the law of conservation of energy, which states: the total energy gained per unit charge must equal the amount of energy lost per unit of charge.
Explanation:
on a wet road, you would need to adjust your speed to _____ slower than normal.
a. 5-10 mph
b. 20-30 mph
c. 40-50 mph
On a wet road, you would need to adjust your speed to 5-10 mph slower than normal.So option a is correct.
On a wet road, you should adjust your speed to ensure that you can drive safely. This is because water causes tyres to lose traction with the road. If you increase your speed on a wet road, you'll have less control over your vehicle. When the road is wet, your vehicle's tyres may not be able to grip the road as well as they would on a dry road.When driving on wet roads, you should maintain a safe distance between your vehicle and the car in front of you. This provides you with enough space to stop safely if the car in front of you stops suddenly.In addition, when driving on wet roads, it's best to avoid sudden steering or braking movements. This will cause your car to skid. Therefore, you should slow down and move more gently on a wet road, and always adjust your speed to 5-10 mph slower than normal.Therefore option a is correct.
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The latent image in a flat-panel detector is formed by which of the following?A. Trapped electronsB. Charged capacitorsC. Electrical resistanceD. Detector elements
The latent image in a flat-panel detector is formed by A. Trapped electrons.
The latent image in a flat-panel detector is formed by trapped electrons.
A flat-panel detector is a type of digital X-ray detector that is commonly used in medical imaging. It consists of an array of detector elements, also known as pixels, that convert X-rays into electrical signals. These electrical signals are then processed to produce a digital image.
When X-rays pass through the detector material, they interact with atoms in the material, causing the release of electrons. These electrons are then trapped in the detector material, creating a temporary electrical charge in the pixels. This charge distribution forms the latent image.
After the exposure is complete, the electrical charges in the pixels are read out and processed to produce the final image. This is done by applying a voltage to the pixels, which causes the trapped electrons to be released and flow to a readout circuit. The amount of charge that is read out is proportional to the X-ray dose that was absorbed by the pixel.
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please help i'm going to throw up from stress
Water at 20.0 °C is mixed with 120.0 g of ethyl alcohol at 10.0 °C in a thermally insulated container. If the final mixture has a temperature of 16.0 °C, how much water was added?
No links istg
Answer:
Explanation:
First of all, I used the specific heat of water as 4182 J/(kgC) and the specific heat of ethyl alcohol (EtOH) as 2440 J/(kgC); that means that we need the masses in kg, not g.
120.g = .1200 kg of ethyl alcohol. Now for the formula:
\(t_f=\frac{(m_{H2O}*spheat_{H2O}*temp_{H2O})+(m_{EtOH}*spheat_{EtOH}*temp_{EtOH})}{(m_{H2O}*spheat_{H2O})+(m_{EtOH}*spheat_{EtOH})}\) where spheat is specific heat.
Filling that horrifying-looking formula in with some values:
\(16.0=\frac{(x*4182*20.0)+(.1200*2440*10.0)}{(x*4182)+(.1200*2440)}\) and
\(16.0=\frac{83640x+2928}{4182x+292.8}\) and
16(4182x + 292.8) = 83640x + 2928 and
66912x + 4684.8 = 83640x + 2928 and
1756.8 = 16728x so
x = .105 kg and the amount of water added is 105 g
a force of 3300 n is exerted on a piston that has an area of 0.060 m2. what force is exerted on a second piston that has an area of 0.18 m2? (1 point)
The force exerted on a piston is determined by the product of the force applied and the area of the piston. In this case, we have a force of 3300 N applied on a piston with an area of 0.060 m^2. To find the force exerted on the second piston with an area of 0.18 m^2, we can use the formula:
Force = Pressure x Area
Since the pressure is the same for both pistons, we can set up the following equation:
3300 N = Pressure x 0.060 m^2
To find the pressure, we divide both sides of the equation by the area of the first piston:
Pressure = 3300 N / 0.060 m^2
Now, we can use the pressure we just calculated to find the force exerted on the second piston with an area of 0.18 m^2:
Force = Pressure x Area
Force = (3300 N / 0.060 m^2) x 0.18 m^2
Simplifying the equation, we find that the force exerted on the second piston is approximately 9900 N.
In summary, the force exerted on the second piston with an area of 0.18 m^2 is approximately 9900 N.
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Which one of the following statements most accurately describes the center of gravity of an object?
a. It is the point from which the torque produced by the weight of the object can be calculated.
b. It must be experimentally determined for all objects
c. It is the point on the object where all the weight is concentrated
d. It is the point where all the mass is concentrated
The most accurate statement describing the center of gravity of an object is D. It is the point where all the mass is concentrated.
This is because the center of gravity is the average position of all the parts of an object, taking into account their masses and positions, and it is the point at which the object can be balanced. It is not necessarily the same as the point where all the weight is concentrated, as the weight of an object is affected by gravity, which can vary in strength depending on location. It also does not need to be experimentally determined for all objects, as it can be calculated using mathematical equations based on an object's shape and mass distribution. However, it is important to note that the center of gravity can change depending on the object's orientation and surrounding environment.
Your answer: c. It is the point on the object where all the weight is concentrated.
The center of gravity of an object is the point at which the entire weight of the object appears to be concentrated, and it is also the point at which the object balances.
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A windmill converts the mechanical energy of wind into _________ energy produced by a generator. Responses.
A windmill converts the mechanical energy of wind into electrical energy. produced by a generator. Responses.
The mechanical power of a wind turbine is converted to what kind of energy?That mechanical energy of the wind is converted into electrical energy by a wind turbine Its kinetic energy of the a flowing fluid—in this case, air—is transformed into rotary motion by a turbine.A wind turbine's blades move or rotate when the wind blows past them.
Do wind turbines provide mechanical energy?The kinetic energy of the wind is transformed into mechanical power by wind turbines.This mechanical energy can be used to particular activities (such pumping water or grinding grain) or can be transformed into electricity by the a generator.
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When a bell is rung by striking it with a metal rod, the sound waves the bellproduces move
In every direction away from the bell
a pencil partially submerged in a glass of water appears broken or offset because of
When a pencil is partially submerged in a glass of water, it appears broken or offset due to the refraction of light. Refraction occurs when light passes through a medium with a different density than the one it was previously in, such as air and water. This causes the light to bend and change direction, resulting in the pencil appearing differently than it actually is.
The light that enters the water from the submerged portion of the pencil is refracted towards the normal (the imaginary line perpendicular to the surface of the water), while the light that enters the air from the exposed portion of the pencil is refracted away from the normal. This causes the image of the pencil to appear broken or offset at the water-air interface.
The degree of the bend depends on the angle of incidence and the refractive index of the medium. Hence, the amount of refraction varies with the thickness of the water column, making the pencil look even more broken or offset when viewed from different angles.
In conclusion, the illusion of a broken or offset pencil in water is caused by the refraction of light at the interface between water and air.
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difference between universal law of gravitation and acceleration due to gravity
Explanation:
The acceleration on an object due to the gravity of any massive body is represented by g (small g). The force of attraction between any two unit masses separated by unit distance is called universal gravitational constant denoted by G(capital g). The relation between G and g is not proportional. That means they are independent entities.
G and g
In physics, G and g can be related mathematically as –
\(g=\frac{GM}{R^{2}}\)
Where,
1=g is the acceleration due to the gravity of any massive body measured in m/s2.
2=G is the universal gravitational constant measured in Nm2/kg2.
3=R is the radius of the massive body measured in km.
4=M is the mass of the massive body measured in Kg.
how can we improve natural resources
Answer:
reduce, reuse, and recycle paper,plastic, electricity, glass, fiber
The work output of a machine is
80 Joules, and its work output is
120 Joules. What is the efficiency of the machine?
To calculate the efficiency of a machine, divide the work output by the work input and multiply the result by 100%.
Correct question:
The work output of a machine is 80 Joules, and its work input is 120 Joules. What is the efficiency of the machine?
Given DataWork output = 80 Joules
Work input = 120 Joules.
Efficiency = Working output/Work input *100
Efficiency = 80/120 *100
Efficiency = 0.67 *100
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A fixed particle with charge –8.8 nC and a second particle with charge –4.3 nC, respectively, are initially separated by a distance of 0.11 m. They are released and the second particle moves 0.030 m. A) What is the change in electric potential energy? B) Did the second particle move toward or away from the source charge?
Answer:
(a). The change in electric potential energy is 8.3 μJ.
(b). The second particle moves away from the source charge.
Explanation:
Given that,
Charge of first particle = -8.8 nC
Charge of second particle = -4.3 nC
Distance = 0.11 m
They are released and the second particle moves 0.030 m,
(a). We need to calculate the change in electric potential energy
Using formula of potential energy
\(U=\dfrac{Kq_{1}q_{2}}{d}\)
Change in potential energy
\(\Delta U=\dfrac{kq_{1}q_{2}}{d_{2}}-\dfrac{Kq_{1}q_{2}}{d_{1}}\)
Put the value into the formula
\(U=\dfrac{9\times10^{9}\times(8.8\times10^{-9}\times4.3\times10^{-9})}{0.030}-\dfrac{9\times10^{9}\times(8.8\times10^{-9}\times4.3\times10^{-9})}{0.11}\)
\(\Delta U=0.000008256\ J\)
\(\Delta U=8.3\ \mu J\)
(B). We need to find the second particle move toward or away from the source charge
We know that,
Both charges are same, so the second particle will be repul from the source charge.
So, The second particle moves away from the source charge.
Hence, (a). The change in electric potential energy is 8.3 μJ.
(b). The second particle moves away from the source charge.
A horizontal line on a phase-change graph indicates
Answer:
A horizontal line on a phase change graph means there has been
no change. Often longer periods of research are needed to see
significant change.
A student walks 5 meters east, 6 meters
west, and then 10 meters east again.
Calculate his total distance that he
travels? Is this a scalar or vector
quantity.
Can anyone tell me what concept of physics acts on snowboarders during the olympics big air jump
Answer:
gravity,lift and dragExplanation:
hope it helpsthe ability to see the world in three dimensions is called
The ability to see the world in three dimensions is called depth perception. It is the visual ability to perceive the relative distance of objects in space and to see them in three dimensions.
Depth perception is an important aspect of vision that allows us to accurately judge distances, perceive spatial relationships, and interact with our environment.
It is the result of the brain processing information from both eyes to create a single, three-dimensional image.
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write any two difference between CGS and MKS system of measurement ?
Answer:
MKS stands for Meter, Kilogram and second. In this system of unit mass is given in Kilogram, length in meter and time in second. ... CGS system stands for Centimeter- Gram- Second system. In CGS system, length is measured in centimeters mass is measured in grams and time is in seconds.
What are two ways fusion is used in the real world.
Answer:
The main application for fusion is in making electricity. Most fusion reactors make less radiation than the natural background radiation we live with in our daily lives. ... Clean - No combustion occurs in nuclear power (fission or fusion), so there is no air pollution.
Your supervisors at A&L Engineering have tasked you with evaluating the durability of three common materials used in the design of cell phone cases
A&L Engineering, as an engineer, you've been tasked with evaluating the durability of three common materials used in the design of cell phone cases.
These materials include:Carbon FiberPolycarbonateTPUExplanation:Carbon fiber is a lightweight, durable, and corrosion-resistant composite material. It is often used in the aerospace, automotive, and sporting goods industries.Polycarbonate is a thermoplastic polymer that is strong, shatter-resistant, and lightweight. It is often used in the production of CDs, DVDs, and eyeglass lenses.
TPU (thermoplastic polyurethane) is a flexible, soft material that is abrasion-resistant and provides excellent impact protection. It is often used in the production of phone cases, as well as sporting equipment and medical devices.To evaluate the durability of these materials, you can conduct a series of tests to measure their resistance to impacts, scratches, and bending.
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A boy on a bicycle drags a wagon full of newspapers at 0.800 m/s for 30.0 min using a
force of 40.0 N. How much work has the boy done?
Answer:
=57600joules
Explanation:
Given data
Velocity =0.8m/s
Time = 30*60=1800 seconds
Distance =Velocity x time
Distance =0.8*1800
Distance =1440m
Work done = force x distance
Work done =40*1440
Work done =57600joules
Hence the work Done is 57600joules
A spherical shell of mass and radius is completely filled with a frictionless fluid, also of mass It is released from rest, and then it rolls without slipping down an incline that makes an angle with the horizontal. What will be the acceleration of the shell down the incline just after it is released
When a spherical shell completely filled with a frictionless fluid is released from rest and rolls without slipping down an incline, the acceleration of the shell can be determined by considering the forces.
The acceleration of the shell down the incline can be found by considering the net force acting on it. The forces involved include the gravitational force and the force due to the fluid. The gravitational force can be decomposed into two components: one parallel to the incline (mg sinθ) and one perpendicular to the incline (mg cosθ), where m is the total mass of the shell and fluid, and θ is the angle of the incline.
The force due to the fluid exerts a torque on the shell, causing it to roll without slipping. This force depends on the mass of the fluid and the radius of the shell. The net force can be calculated by subtracting the force due to the fluid from the gravitational force component parallel to the incline: Fnet = mg sinθ - (2/5)mr^2 α, where r is the radius of the shell, and α is the angular acceleration.
Since the shell rolls without slipping, the relationship between linear and angular acceleration is given by α = a/r, where a is the linear acceleration of the shell. By substituting α = a/r into the net force equation, we can solve for the acceleration: a = (5/7)g sinθ.
Therefore, the acceleration of the shell down the incline just after it is released is given by a = (5/7)g sinθ, where g is the acceleration due to gravity and θ is the angle of the incline.
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What is the weight of a body at a centre of Earth
What did Galileo discover when he dropped two cannon balls into f different weights from the leaning tower of pisa
Answer: The time it took for them to fall ere the same.
Explanation:
The only difference was because of resistance, weight doesn't affect the speed of gravity, the speed of gravity stays the same (9.801 meters per second)
Please help me with this!
Neptune
What is the orbit of the Neptune?
Is the Sun at the center of the Nepturn’s orbit?
Describe the motion of Neptune throughout its orbit? Does it move at constant speed?
Click on each highlighted section and record the area. What do you notice about each area?
Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
What is the orbit of the Neptune? Orbital period 165 years
Is the Sun at the center of the Neptune's orbit? Neptune orbits our Sun, a star, and is the eighth planet from the Sun at a distance of about 2.8 billion miles (4.5 billion kilometers)
Describe the motion of Neptune throughout its orbit? Does it move at constant speed? One day on Neptune takes about 16 hours (the time it takes for Neptune to rotate or spin once). And Neptune makes a complete orbit around the Sun (a year in Neptunian time) in about 165 Earth years (60,190 Earth days). Sometimes Neptune is even farther from the Sun than dwarf planet Pluto.
Click on each highlighted section and record the area. What do you notice about each area? Unable to answer as no picture was provided
Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra). Unable to answer as no picture was provided
I hope the ones I could answer help.
18.Suppose the boy first runs a distance of 100 metres in 50 seconds in going from his home to the shop in the East direction, and then runs a distance of 100 metres again. in 50 seconds in the reverse direction from the shop to reach back home from where he started (see Figure).
(i) Find the speed of the boy.
(ii) Find the Velocity of the boy
(iii) A boy is sitting on a merry-go-round which is moving with a constant speed of 10m/s. This means that the boy is :
(iv) In which of the following cases of motion, the distance moved and the magnitude of displacement are equal ?
ANSWER IT ASAP!!!
The solutions are i) The speed of the boy is 2 m/s. ii) The velocity of the boy is 0 m/s. iii) The velocity is zero and the speed of the boy is 10 m/s. iv) In the case of rectilinear motion the distance and displacements are equal.
i) To find the speed of the boy we can directly use the speed, distance, and time formula that is:
Speed= distance/time
Here we can see that the boy covers a distance of 100 m back and forth so the total distance he covered is 100 m + 100 m = 200 m.
The time he took for the journey is 50 s each side so the total distance is 50 s + 50 s = 100s
Now substituting the values in the formula, we get:
Speed = 200 m / 100 s
Speed = 2 m/s
Therefore the speed of the boy is 2 m/s.
ii) The velocity is the vector quantity which means it indicates the speed of the boy in a particular direction. The velocity can be found by the formula:
Velocity = Displacement/Time
Now we can see that the initial and the final position of the boy are the same so there is no displacement, so displacement is 0.
Substituting the values into the formula we get
Velocity = 0 m/100 s
Velocity = 0m/s
Therefore the velocity of the boy is zero.
iii) According to the question the boy is just sitting on the merry-go-round and not changing his position with respect to the merry-go-round, his velocity is zero as there is no displacement. However, the merry-go-round is moving at a constant speed of 10 m/s, so the boy has a speed of 10 m/s with respect to the ground.
iv) When an object moves in a straight line. the distance moved and the magnitude of displacement are equal. So, in the case of rectilinear motion, the distance covered and the magnitude of the displacement are equal.
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Determine both the mass and the charge of a block of material consisting of 3 x 10^27 protons, 3 x 10^37 neutrons, and 3.1 x 10^27 electrons.
Answer:
The mass of the block of material is 3 x 10³⁷ g/mol
The charge of the material is 4.8 x 10⁸ C
Explanation:
Given;
number of protons of the material, P = 3 x 10²⁷
number of neutrons in the material, N = 3 x 10³⁷
number of electrons in the material, E = 3 x 10²⁷
The mass of the block of material is calculated as follows;
M = P + N
M = 3 x 10²⁷ + 3 x 10³⁷
M = 3 x 10³⁷ g/mol
The charge of the material is calculated as follows;
charge of 1 electron = 1.6 x 10⁻¹⁹ C
charge of 3 x 10²⁷ electrons = 3 x 10²⁷ electrons x 1.6 x 10⁻¹⁹ C
= 4.8 x 10⁸ C