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What is the magnitude of the potential difference between two points that are 1.15 cm and 2.99 cm from a proton? Answer in units of V
An electron with the initial speed of 4.00×10^5 is brought to rest by an electric field. What was the initial kinetic energy of electron, in electron volts.
If you now place a pencil under the edge of the mirror nearer the wall, tilting it upward by 5.0, how much higher on the wall is the spot?
The critical angle for a special type of glass in air is 41.8. The index of refraction for water is 1.33. What is the critical angle if glass is immersed in water.
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up.
A pendulum has a period of 0.80s on Earth. What is its period on Mars, where an acceleration of gravity is about 0.37 that on Earth.
Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.50 m/s collides head-on with a 0.84 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?
A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.2 atm to 5.90 atm. Assume the volume of the tank and the temperature of the gas re..
An 8 g bullet is fired into a 2.5 kg ballistic pendulum and becomes embedded in it. If the pendulum raises a vertical distance of 6cm, compute the initial speed of the bullet.
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
A 425 kg bear grasping a vertical tree slides down at constant velocity. What is friction force that acts on the bear.
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