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Problem: The magnetic field of the Earth is approximately 0.5 ×104 T. What current in a long straight wire would produce a field of equal strength at a distance of 6 cm from the wire?
I want you to explain the physics in this problem.
The figure below shows a thin, uniform bar of length D =1.11 m and mass M =0.82 kg pivoted at the top. The rod, which is originally at rest, is struck by a particle whose mass is m = 0.30 kg at a point x = 0.80d below the pivot.
a 500 n man is riding in an elevator. at a certain instant his feet push against the floor with a force greater than
a loaded penguin sled weighing 90 n rests on a plane inclined at 20deg to the horizontal. between the sled and the
A block of mass m1 = 3 kilogram is sliding across a frictionless table at a speed of v1 = 3 m/s. Obtain the maximum energy lost in the collision
A laser beam in air is incident on a liquid at an angle of 38.0 with respect to the normal. What is the critical angle for total internal reflection for this fluid
A water pipe having a 2.55 cm inside diameter carries water into the basement of a house at a speed of 0.760 m/s and a pressure of 237 kPa. If the pipe tapers to 1.56 cm and rises to the second floor 6.04 m above the input point, what are the (a) spe..
A 850 kilogram car pushes a 2400 kilogram truck that has a dead battery. Obtain the magnitude of the force of the truck on the car
A 0.1 Kg hockey puck slows down from 45 m/s to 44 m/s due to friction as it slides 25m across the ice. a) Draw a free body diagram showing all the forces on the puck b)using the work-energy relationship, find the work done by the frictional force.
You toss a racquetball directly upward and then catch it at the same height you released it 2.24 s later. Suppose air resistance is negligible. What is the initial velocity of the ball? What is the maximum height of the ball?
The mass of the blue puck shown below is 20.0% greater than the mass of the green puck. Find the speeds the pucks have after the collision if half the kinetic energy of the system becomes internal energy during the collision
An electron in the hydrogen atom jumps from a level in which the energy is 1.89 eV higher than the energy of the final lower-energy level. What is the frequency of the light emitted in this transition
During an adiabatic process, the temperature of 6.00 moles of a monatomic ideal gas drops from 565°C to 227°C. Find the change in internal energy
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