374 Answered Questions for the topic physics B

Physics B Physics

01/29/21

physics question help please

A 25 kg satellite orbiting a planet of an unknown mass in a circular path that has a radius of 2.0 ×106 m above the planet’s surface with a period of 8.5 h, the gravitational acceleration on the... more
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Physics B Physics

01/29/21

physics question

consider the following pairs of objects with varying masses and separation distances. which of these pairs has the smallest gravitational potential energy? (each "-" stands for 1 unit between r and... more
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Physics B Physics

01/27/21

Which of the following is correct
From work kinetic energy theorem ∑ W= ∧K and conservation of mechanical energy ∧U+∧K=0Which of the following is correct?A) ∧U= KB) ∧U=WC) ∧U= -KD) ∧U= -W(∧-DELTA)
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Physics B Physics Physics C

01/27/21

Venus has a mass of about 0.0558 times the mass of Earth and a diameter of about 0.381 times the diameter of Earth. The acceleration of a body falling near the surface of Venus is about:

Venus has a mass of about 0.0558 times the mass of Earth and a diameter of about 0.381 times the diameter of Earth. The acceleration of a body falling near the surface of Venus is about: (a) 0.21... more
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Physics B Physics Physics C

01/27/21

The speed of the object just before it hits the earth, in terms of G, M, and R is __________

An object is dropped from an altitude of one earth radius above the earth’s surface. Neglect air resistance. Let M = the mass of the earth and R = the radius of the earth. The speed of the object... more
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Physics B Physics Physics C

01/25/21

Given that the gravitational potential energy near the surface of the earth is given by U_g=mgh, find the gravitational force.
Given that the gravitational potential energy near the surface of the earth is given by U_g=mgh, find the gravitational force.I solved this question by taking the formula for gravitational... more
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Physics B

01/24/21

need help with this
If the drop from the table height is 0.402 seconds, then how high was the table?
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Physics B

01/23/21

Need help on this
If the job from the table height is 0.402 seconds how high was the table
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01/20/21

How do I approach this work in multiple dimensions question?
The path of a particle is described by the position vector vec r =<3t, t^ 2 ,-t> . The particle experiences a force which varies as a function of the particle's position, described by the... more
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01/18/21

A object of mass m falls from a height h. Find its speed immediately prior to impact using conservation of mechanical energy. Neglect air resistance and assume constant gravitational field.
A object of mass m falls from a height h. Find its speed immediately prior to impact using conservation of mechanical energy. Neglect air resistance and assume constant gravitational field.
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Physics B Physics Physics C

01/18/21

Physics Cliffs Question
You slide down an avalanche from a height of 20 meters. Once you reach the bottom of the avalanche, you have the misfortune of flying of a 15 meter cliff horizontally. How far from the base do you... more
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Physics B Physics Physics C

01/18/21

A jet fighter with a mass of 20,000 kg coasts through the sky at an altitude of 10 km and a velocity of 250 m/s. The jet then dives to an altitude of 2 km. Find the new velocity of the jet.
A jet fighter with a mass of 20,000 kg coasts through the sky at an altitude of 10 km and a velocity of 250 m/s. The jet then dives to an altitude of 2 km. Find the new velocity of the jet. All... more
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Physics B Physics Physics C

01/18/21

Stumped for hours on this rotational and spring motion question.
A 2-kg disc moves in uniform circular motion on a frictionless horizontal table, attached to the point of rotation by a 10-cm spring with a spring constant of 50N/m. When stationary, the spring has... more
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01/11/21

AP Physics Question about gravitational field
Two planets P1 and P2 orbit around a star S in circular orbits with speeds v1 = 45.8 km/s, and v2 = 56.8 km/s respectively.(a) If the period of the first planet P1 is 740 years what is the mass, in... more
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01/08/21

Which of the following has the greatest effect on the gravitational force between two objects?
A. Gravitational constantB. Distance between objects
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01/08/21

Which of the following has the greatest effect on the gravitational force between two objects?
A. Gravitational constantB. Distance between objects
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01/08/21

Which of the following has the greatest effect on the gravitational force between two objects?
A. Gravitational constantB. Distance between objects
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01/08/21

Which of the following has the greatest effect on the gravitational force between two objects?
A. Gravitational constantB. Distance between objects
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Physics B Physics Physics C

12/15/20

Find the two forces F1, and F2.
A diver of weight 1500 newtons stand at the end of a 4.0 meter diving board. Assume that the weight of the diving board is negligible. The board is attached to two pedestal that are 1.5 meters... more
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Physics B Physics Physics C

12/15/20

Find the two forces F1, and F2.
A diver of weight 1500 newtons stand at the end of a 4.0 meter diving board as shown assume that the weight of the diving board is negligible. The board is attached to two pedestal that are 1.5... more
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Physics B Physics Physics C

12/11/20

Which item gets to the bottom first?
A Hoop (a car tire), and a solid sphere (a bowling ball) and a solid cylinder (a round fence post) all roll down a hill at once. Which item gets to the bottom first?m g h = ½ m v2 + ½ I w2   w = vT... more
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Physics B Physics Physics C

12/10/20

Which item gets to the bottom first?
A Hoop (a car tire), and a solid sphere (a bowling ball) and a solid cylinder (a round fence post) all roll down a hill at once.  Which item gets to the bottom first?m g h = ½ m v2 + ½ I... more
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12/09/20

speaker and microphone urgent help
. A speaker emits isotropic sound waves at a frequency of 3x103 Hz and a power of 25 Watts. A small microphone has an area of 0.72 cm2 and is located 4.12 meters from the point source. The speed of... more
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12/05/20

I need help with these two questions if someone can help me please? Thank you!
A top has a peg along its axis with a lightweight string wrapped around it. As shown below, the end of the string is pulled with a constant tension force F = 4.32 N, causing the string to unwind... more
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12/04/20

Can someone help me solve this?
Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see... more
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