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Two grapes are given equal charges and held apart at a distance of 2.0 m. They experience a repulsive force of 2.2 N. Find the magnitude of the charge on each grape.
The heat of fusion for water is 80. cal/g. How various calories of heat are released when 20.0 g of water at 30. °C is cooled to 0 °C and frozen to ice at 0 °C
The average frictional force exerted on him by the pole has a magnitude of 815 N, and his speed at the bottom of the pole is 3.7 m/s. Explain how far did he slide down the pole?
A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction, What is the change in kinetic energy of the car-truck system in the collision
A boulder has 300J of potential energy sitting on the edge of cliff. What is the boulder's kinetic energy as it hits the ground.
The sound produced by the loudspeaker has a frequency of 12002 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM that has a fixed length.
There is a uniform magnetic field present, given by B=0.003 i + 0.004 j + 0.002 k, where i,j,k are the unit vectors along the cartesian coordinate axes in units of Tesla. Compute the y-component of the magnetic force acting on a segment of wire of..
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 205 N/m. Find the spring constant of spring 2.
One solenoid is centered inside another. The outer one has a length of 47.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
A ray of light is incident on the surface of a block of clear ice at an angle of 33.0° with the normal. Find the angle between the reflected and refracted light
A u-tube with constant cross section is partly filled with water. Engine oil of density 0.8g/cm3 is poured into the right arm (without mixing) until the water level rises 2.0cm. The length of the oil column is then.
A generator uses a coil that has 140 turns and a 0.50-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. assume that each turn of the coil is a square (an approximation), find out the length of the..
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