Can someone please help me it's urgent!

Answer:

Icy roads

Explanation:

There is so little friction you slide on it way more than other roads. :)

To determine the new force of gravity in the first scenario, we can use the formula for gravitational force:

\(Fg = (G * m1 * m2) / r^2,\)

where G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

If we triple the mass of one object and double the distance between their centers, the new force of gravity can be calculated as follows:

New \(Fg = (G * (3m) * m) / (2r)^2.\)

Simplifying this expression, we get:

New Fg = (G * 3m * m) / (4r^2).

Since (3m * m) / (4r^2) is equivalent to (3/4) * (m * m) / (r^2), we can rewrite the equation as:

New \(Fg = (3/4) * (G * m * m) / r^2.\)

Comparing this to the original force of gravity, Fg, we see that the new force is (3/4) times the original force. Therefore, the answer is C) 0.75 Fg.

Regarding the second scenario, for objects in stable orbit, the orbital period is determined by the formula:

\(T = 2π * sqrt(r^3 / (G * M)),\)

where T is the orbital period, r is the distance between the center of the object and the center of the Earth, G is the gravitational constant, and M is the mass of the Earth.

If Satellite B is twice as far from the Earth's center compared to Satellite A, we can say that r_B = 2 * r_A.

Let's compare the orbital periods of the two satellites:

T_B = 2π * sqrt((2r_A)^3 / (G * M)) = 2π * sqrt(8r_A^3 / (G * M)).

T_A = 2π * sqrt(r_A^3 / (G * M)).

Dividing T_B by T_A, we get:

T_B / T_A = (2π * sqrt(8r_A^3 / (G * M))) / (2π * sqrt(r_A^3 / (G * M))).

Simplifying this expression, we find:

T_B / T_A = sqrt(8r_A^3 / (r_A^3)) = sqrt(8) = 2.83.

Therefore, the answer is a) 2.83 times larger.

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When two objects are experiencing gravitational attraction, if you triple the mass of one of the objects and double the distance between their centers, the new force of gravity compared to the old will be 0.75 times the original force (0.75 Fg).The orbital period of Satellite B compared to Satellite A is 2.83 times larger.

This is because the force of gravitational attraction between two objects is inversely proportional to the square of the distance between their centers of mass. If you double the distance between two objects, the force of gravitational attraction decreases by a factor of 4 (2^2). On the other hand, if you triple the mass of one of the objects, the force of gravitational attraction increases by a factor of 3.

Therefore, combining these effects, the new force of gravity will be 3/4 or 0.75 times the original force.

Satellite A and Satellite B are both in stable orbit around the Earth, but Satellite B is twice as far from the Earth's center as Satellite A. The orbital period of Satellite B compared to Satellite A is 2.83 times larger.

This is because the orbital period of an object in circular motion is dependent on the radius of the orbit. The further an object is from the center of the orbit, the longer it takes to complete one full orbit. Since Satellite B is twice as far from the Earth's center as Satellite A, its radius is also twice as large. The orbital period is directly proportional to the radius, so Satellite B's orbital period will be 2.83 times larger than Satellite A's orbital period.

Therefore, the correct statement is:

The new force of gravity compared to the old will be 0.75 Fg.

The orbital period of Satellite B compared to Satellite A is 2.83 times larger.

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1.The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation).

2.How does gravity work in space? Gravity is a very important force. Every object in space exerts a gravitational pull on every other, and so gravity influences the paths taken by everything traveling through space. It is the glue that holds together entire galaxies. It keeps planets in orbit.

3.Our weight on moon is less than it would be on Earth due to a difference of the strength of gravity on the moon. The moon's gravitation force is determined by the mass and the size of the moon. Since the moon has significantly less mass than the Earth, it will not pull objects toward itself at the strength that Earth will.

Answer:

from all its mass

Explanation:

write by doing arrangement

Answer:

To get to the door, the astronaut has to throw the book and pencil away from her in the direction opposite to that of the door.

Explanation:

Since no net force acts on her and she floats in the center of the room, if she throws the book and pencil away from her, since both her, the book and the pencil have an initial momentum p = 0, and since momentum is conserved, then after throwing the book and pencil away from her, the momentum of both her, the book and pencil is still zero.

The astronaut will thus develop a momentum which is opposite to that of the book and pencil. This is shown below.

Since p = p' where p = initial momentum of astronaut, book and pencil = 0 and p' = final momentum of astronaut, book and pencil = mv + m'v' where m = mass of book and pencil, v = velocity of book and pencil, m' = mass of astronaut and v' = velocity of astronaut.

So, p = p'

0 = mv + m'v'

mv = -m'v' where mv = momentum of book and pencil and m'v' = momentum of astronaut

v' = -mv/m

We see that the astronaut develops a momentum opposite in direction but equal in magnitude to that of the book and pencil and will thus develop a velocity opposite to that of the book and pencil.

Thus, to get to the door, the astronaut has to throw the book and pencil away from her in the direction opposite to that of the door.

This standing wave pattern was seen at a frequency of 800 hz. The frequency of the 2nd harmonic is C) 1600 hz.

A standing wave is shaped when a wave disrupts its reflected wave, causing productive and horrendous impedance designs. For this situation, the standing wave design was seen at a recurrence of 800 Hz. The subsequent consonant is the second recurrence that can be created by a framework at two times the crucial recurrence.

The second symphonious of a standing wave is twofold the recurrence of the central recurrence. In this manner, the recurrence of the subsequent consonant can be determined as 2 x 800 Hz = 1600 Hz.

In this way, the right response is choice C) 1600 Hz.

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The force F can be calculated using Archimedes' principle, which states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. In this case,

the buoyant force is equal to the weight of the person, and the force F applied by the friend must be equal to the difference between the buoyant force before and after the volume change. The buoyant force before the volume change can be calculated as the weight of water displaced by the person's original volume, while the buoyant force after the volume change can be calculated as the weight of water displaced by the person's new volume. Subtracting these two values gives the force F.

The force F can be expressed as F = (ρ_w * g * ΔV), where ρ_w is the density of water, g is the acceleration due to gravity, and ΔV is the change in volume. Plugging in the given values, F can be calculated as F = (1000 kg/m^3 * 9.81 m/s^2 * 0.0022 m^3) = 21.48 N. Therefore, the force F applied by the friend to the person is 21.48 N.

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Answer:

Efficiency can be increase by using rollers in conjunction with the inclined plane. Wedge. The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log.

Explanation:

Hope it helps

If you know the speed (v) and frequency (f) of a wave, you can calculate its wavelength (λ). The formula to find the wavelength is: λ = v / f

In this equation, the speed of the wave is represented by 'v', and the frequency is represented by 'f'.

Wavelength (λ) is the distance between two consecutive points on the wave that are in the same phase, such as two adjacent crests or troughs.

By dividing the wave's speed by its frequency, you can determine the length of one complete wave cycle.

This property is essential in understanding various wave-related phenomena and applications in physics, engineering, and communication technologies.

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The absolute maximum shear stress will occur at : Point A

Shear stress is a force that cause deformation of a material via slippage along planes which are parallel to each other.

From the diagram the shear stress distribution is parabolic in nature therefore the absolute maximum shear stress will occur at points A and C of the diagram.

The shear stress appears maximum at point A due to the shear force and torque

Hence we can conclude that the absolute maximum shear stress will occur at Point A

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Attached below is the missing image related to your question

Answer:

I believe kinetic / potential

Explanation:

Answer:

1) 150 [m/min]; 2) 250 [m/min].

Explanation:

1) time=10min; distance=1,5km, then the speed=distance/time=1.5/10[km/min]= 0.15 [km/min] or 150 [m/min] or 2.5 [m/s];

2) time=10 min; distance=2.5 km, the the speed=distance/time= 2.5/10= 0.25[km/min] or 250 [m/min] or ≈4.17 [m/s].

The value of n in the given function is negative even integer.

The given parameters:

\(f(x) = a(x + k)^{\frac{1}{n } } + c\)

When n is positive, the function is written as;

\(f(x) = a(x + k)^{\frac{1}{n } } + c\)

When n is negative, the function is written as;

\(f(x) = a(x + k)^{\frac{1}{-n} } + c\\\\f(x) = \frac{a}{(x + k)^n} + c\)

When n is odd integer, the function will have three possible curves.

When n is even integer, the function will have two curves: one real solution and one imaginary solution.

When n is positive even integer, the real solution will curve upwards.

When n is negative even integer, the real solution will curve downwards.

The plot in the given graph curves downwards which indicates negative even integer value of n.

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Answer: N is a positive even integer

Explanation: The answer above is wrong I did the quiz once alr.

Answer:

The sports car has more momentum.

Explanation:

Truck: P = mv = 5000 kg × 10 m/sec = 50,000 kg-m/sec

Sports car: P = mv = 1200 kg × 50 m/sec = 60,000 kg-m/sec

The sports car will have more momentum than a truck.

It is the product of the mass of a particle and its velocity.

Momentum is a vector quantity; i.e., it has both magnitude and direction

It is given by:

\(P=m*v\)

Let's calculate for each on by one:

Truck:

\(P = m*v \\\\P= 5000 kg * 10 m/sec \\\\P= 50,000 kg.m/sec\)

Sports car:

\(P = m*v \\\\P= 1200 kg * 50 m/sec \\\\P= 60,000 kg.m/sec\)

Thus, the value of momentum for a sports car is higher.

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Answer:

vacuole

Explanation:

Remember vacuoles in plant cells are a lot bigger than there animal cell counterparts.

The resistance of the wire is 0.6 ohms. The magnitude of the electric field in the wire is 0.75 V/m.

To find the resistance of the wire, we can use Ohm's Law, which states that the resistance (R) is equal to the ratio of the potential difference (V) across a conductor to the current (I) flowing through it:

R = V / I

Given that the potential difference V is 1.5 V and the current I is 2.5 A, we can calculate the resistance:

R = 1.5 V / 2.5 A = 0.6 Ω

Therefore, the resistance of the wire is 0.6 ohms.

To find the magnitude of the electric field in the wire, we can use the relationship between the electric field (E), potential difference (V), and distance (d). For a uniform electric field in a straight wire, the electric field is given by:

E = V / d

Given that the potential difference V is 1.5 V and the length of the wire (distance) d is 2.0 m, we can calculate the magnitude of the electric field:

E = 1.5 V / 2.0 m = 0.75 V/m

Therefore, the magnitude of the electric field in the wire is 0.75 V/m.

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Terrestrial planets lost the majority of gas in their primary atmospheres due to their low mass and weak gravity.

Terrestrial planets, unlike gas giants, have a weaker gravitational pull, which makes it easier for particles in their atmosphere to escape into space.

Additionally, the solar wind, a stream of charged particles emanating from the sun, can strip away the atmosphere of a planet that lacks a strong magnetic field to protect it.

In the early Solar System, the young sun was much more active, and the solar wind was stronger. This is believed to be the reason that the terrestrial planets, such as Mercury, Venus, Earth, and Mars, lost most of the gas in their primary atmospheres.

Despite these factors, some gases were still retained due to the gravitational pull of these planets and the presence of an ozone layer. For example, Earth's atmosphere is composed mainly of nitrogen and oxygen, which are heavier gases that were retained due to the planet's gravitational pull.

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The combined speed of the pieces of clay of mass 2 kg respectively is 1 m/s.

Speed is the ratio of distance to time.

To calculate the combined speed of the piece of clay, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the combined speed of the piece of clay is 1 m/s.

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Answer:

1/ Better Health

2/ Reduce injury posibility

3/ Increase energy level when exercising

4/ Bigger muscle

5/ Prevent disease

Explanation: The training helps you get the five benefits above. There is more benefit, but I think the five above are the most important!

Explanation:

Using kinematics,

t = 4s

u = 0m/s

a = 9.8m/s^2

Therefore v = u + at = 0 + (4)(9.8) = 39.2m/s.

Waveform conversion circuits, also known as signal conversion circuits, are electronic circuits designed to convert one form of an electrical waveform into another form. Waveform conversion circuits find application in a wide range of fields where the modification, conditioning, or transformation of electrical waveforms is necessary to achieve specific objectives.

These circuits modify the characteristics of an input signal to achieve a desired output waveform. The conversion can involve changing the amplitude, frequency, phase, or shape of the waveform.

Waveform conversion circuits are used in various applications where it is necessary to transform signals to match specific requirements. Here are some common areas where waveform conversion circuits are typically used:

Audio Processing: In audio applications, waveform conversion circuits are used to modify audio signals for various purposes. This includes amplifying, filtering, equalizing, or modulating audio waveforms to enhance sound quality, remove noise, or achieve specific audio effects.

Power Electronics: Waveform conversion circuits are extensively employed in power electronics systems for converting and conditioning electrical power. These circuits are used in devices such as inverters, converters, rectifiers, and voltage regulators to transform power waveforms, adjust voltage or current levels, and ensure efficient power transfer.

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Answer:

Below

Explanation:

F = m a

F/a = m

350 N / 9.81 m/s^2 = 35.7 kg

if An object has a weight of 350N on Earth Then the mass of the object is approximately 35.67 kg.

The weight of an object is the force exerted on it due to gravity. The weight is given by the formula:

Weight = mass × acceleration due to gravity

On Earth, the acceleration due to gravity is approximately 9.81 m/s^2. Therefore, we can calculate the mass of the object by rearranging the formula:

mass = weight/acceleration due to gravity

Substituting the given weight of 350N, we get:

mass = 350 N / 9.81 m/s²

mass ≈ 35.67 kg

Therefore, the mass of the object is  35.67 kg.

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Answer:

Basketball players

Explanation:

Basketball players

Answer:

B. The bonds between the oxygen and hydrogen atoms

Explanation:

The bonds that formed in this reaction is one between the oxygen and hydrogen atoms.

This bond is called a covalent bond.

Answer:

The correct answer is B.

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Answer:

K.E of truck > K.E of car

Explanation:

Mass of the truck = 8000Kg

K.E=\(\frac{1}{2} mv\)

K.E =\(\frac{1}{2}*8000*v\\ 4000v\)

Mass of the car = 1000 Kg

K.E of the car =\(\frac{1}{2}*1000*v\\ 500v\)

Therefore Kinetic energy of the truck is greater than that of the car

It does not violate the principle of  relativity because the speed of the electron in water can explained as its relative speed with water.

The principle of relativity states that there is no physical way to differentiate between a body moving at a constant speed and an immobile body.

If the speed of light in water is 230Mm/s and an electron is moving through water at 250 Mm/s, it does not violate the principle of  relativity because the speed of the electron in water can explained as its relative speed with water.

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The change in potential energy of the system during this time interval is -648 nJ.

The change in potential energy of a particle with charge q that moves from a point with potential V1 to a point with potential V2 is given by:

ΔPE = q x (V2 - V1)

where q is the charge of the particle, and

V2 and V1 are the potentials at the final and initial positions.

Therefore, the charge of the particle is 18 nC, and it moves from a point with potential V1 = 46 V to a point with potential V2 = 10 V.

Therefore, the change in potential energy is:

ΔPE = q x (V2 - V1) = 18 nC x (10 V - 46 V) = -648 nJ

The negative sign indicates that the potential energy of the particle has decreased, which means that the particle has lost potential energy as it moved from the point with higher potential to the point with lower potential.

Therefore, the change in potential energy of the system during this time interval is -648 nJ

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Answer:

A is the answer!

Explanation:

Edge 2021

Answer:

A

Explanation:

Edge