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Super Invar, an alloy of iron and nickel, is a strong material with a very low coefficient of thermal expansion (0.20 × 106 μC). A 1.5 meter long tabletop made of this alloy is used for sensitive laser measurements where extremely high tolerances are required. Find how much will this table expand along its length if the temperature increases 6.4oC?
A surface completely surrounds a 3.5 × 10-6 C charge. Find the electric flux through this surface when the surface is (a) a sphere with a radius of 0.59 m, (b) a sphere with a radius of 0.16 m, and (c) a cube with edges that are 0.27 m long.
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
A 51kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 43.5o above the horizontal. If the tension in the rope is 115 N, how much work isdone on the crate to move it 8.0 m?
The average density of the planet uranus is 1.27 x 10^3 kg/m^3. The ratio of the mass of neptune to that of Uranus is 1.19. The ratio of the radius of Neptune to that of Uranus is 0.969. Find the average density of Neptune.
in the early 1900s robert millikan used small charged droplets of oil suspended in an electric field to make the first
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C, Find the magnitude and direction of the total field
Assume you could mount a sphere (I = (2/5)MR^2) on top of the horizontal disk. Determine the moment of inertia of the disk and sphere together
Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship?
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s. what is the average force experienced by the clay
A 0.320 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? kg (b) What fraction of the original k..
Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point?
A ball of mass 2.4 kg hangs at the end of a string 1.4 m in length from the ceiling of a room. What is the gravitational potential energy of the ball relative to the floor
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