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A 1/2 kg ball is dropped from rest at a point 5m above the floor, and bounces back with a speed of 6 m/s. What impulse is applied on the ball during the collision with the floor?
An organ pipe is 1.17 m long. The temperature of the air is 20 degree C. What is the fundamental harmonic frequency of this pipe when it is closed at one end
A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion
On a workday the average decibel level of a busy street is 78 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
Two wheels can rotate freely about fixed axles through their centers. The wheels have the same mass, but one has twice the radius of the other. Compare the magnitudes of the two forces
Starting from rest, a 4.50-kg block slides 3.00 m down a rough 30.0° incline. Determine the work done by the friction force between block and incline
A charged particle is moving horizontally westward with a velocity of 3.5 × 106 m/s in a region, What is the charge on the particle
The distance between the electron and proton in a hydrogen atom is 5.3 x10-11 m. Find the speed of the electron as it orbits the proton
As olenoid with 600 turns has a radius of .04 m and is 40cm long. If this solenoid carries a current of 12 A. what is the magnitude of the magnetic field at the center of solenoid.
the 1994 winter olympics include theaerials competition in skiing. in this event skiers speed down aramp that slopes sharply upward at the end. what isthe skiers launch speed
Consider two particles, each with a charge of +Q located at the opposite corners of a square of side d. What is the direction of the net electrical field at point P
An object of mass 5 kg is moving with a momentum of 50 kg m/s. What is the objects speed? What is the objects kinetic energy
A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 105 m below
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