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Hello,   I'm taking a summer course in college physics and am reviewing some practice questions to prepare for my oncoming exam. I'd really appreciate some help on this question that...

A small loop of wire with radius 2 cm is placed in a uniform upward magnetic field. By what factor does the flux change if the radius of the loop is increased to 8 cm?

If the radius of the earth becomes half of its present value , with its mass remaining the same , the duration of the one day will become ? 1. 6 hour 2. 12 hour 3. 48 hour 4....

If the radius of the earth shrinks by 1.5 % (mass remaining the same ) , then the value of acceleration due to gravity changes by ?   1%   2%   3%   4%

Could somebody please tell me, if I had a ball and I pushed it with an external force into space, where does the stored gravitational energy go? What type of energy does it change into.

The moon is revolving around the earth at about 1 rev per 27.3 days. Assume that the average radius of the moon is 1,080 miles and the average distance from the earth to the moon is 238900 miles,...

A typical piece of wood has a density of 750 kg/m3. How many 15.0 gram metal army men (or Barbies - your preference) could you safely float on one such piece of wood having a mass of 1.25 kg, in a...

So I'm studying for an exam I have coming up soon and I came across this problem in the back of the book:   A 70 kg man runs by a seated woman at 4.5 km/hr. The woman's mass is 55 kg...

A room of 1.5 litres contains gas with pressure 10^5 Pa.If the gas particle has average speed of 750 m/s,then gas mass that trapped in the room is...gram A.0.8 B.0.7 C.0.6 D.0...

I have some difficulties solving the weak form of the PDE: The proof of the preceding statement is elementary. The weak form of the PDE ∇·(A(x)∇u)+ω^2*q(x)*u = 0 for all φ that vanish at ∂?. Could...

A room of 1.5 litres contains gas with pressure 10^5 Pa.If the gas particle has average speed of 750 m/s,then gas mass that trapped in the room is...gram A.0.8 B.0.7 C.0.6 D.0...

Magnetic flux produced by magnetic filed B that through perpendicularly a surface of width A is P.If the magnetic field is reduced into B/2,but the width surface enlarged to 2A,then flux produced...