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A small block B is placed is placed on another block A of mass 7 kg and length 15 cm. Initially the block B is near the right end of block A. A constant horizontal force of 10 N is applied to the block A. All the surfaces are assumed frictionless. Find the time elapsed before the block B separates from A.
Two protons are brought to a distance of 3x10^(-14) m from each other. find the magnitude and direction of the force on both
A small mailbag is released from a helicopter that is descending steadily at 2.12 m/s. How far is it below the helicopter
The sound intensity 44 m from a wailing tornado siren is 0.10 W/m2 -. Estimate the maximum distance at which the siren can be heard
The maximum speed of a 3.1 kilogram mass attached to a spring is 0.68 m/s and the maximum force exerted on the mass is 11 Newton. Estimate what is the force constant of the spring
A 150.0 Kg block travels with speed of 10.0 km/h and another block of 100.0 Kg traveling at 5.0 km/h. as shown in the figure. The blocks undergo an elastic collision. The velocity of the center of mass after the collision is (in km/h):
Write the expressions for the electric and magnetic fields of a uniform plane wave propagating in an arbitrary direction and list all the conditions to be satisfied by the electric field, magnetic field, and propagation vectors.
A coil of wire that is 3.0cm in diameter has 1500 turns is in a magnetic field that goes from0 T to 0.5 T in 5 ms. The axis of the coil is parallel to thefield. What is the emf of the coil?
A pole projects horizontally from the front wall of a shop. A5.1-kg sign hangs from the pole at a point 2.2m from the wall. What is the torque due to this sign
Light visible to humans consists of electromagnetic waves with wavelengths (in air) in the range 400-700 nm (4.0 10-7 m to 7.0 10-7 m). What are the frequencies of electromagnetic waves that are visible
A Pendulum on Mars, a certain simple pendulum has a period on the earth of 1.65 s. What is its period on the surface of Mars
Compute the force of gravity between a newborn baby (mass = 4 kg) and the planet Mars (mass = 6.4 x10^23 kg), when Mars is at its position closest to Earth (distance = 8.0 x10^10 m).
Consider the series RC-circuit shown below for which R = 41.0 kΩ, C = 41.0 µF, and [e m f] = 26.5 V. Find the time constant of the circuit and the charge on the capacitor one time constant after the switch is closed.
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