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If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact?
Two equal forces act on the two different objects, one of which has a mass ten times as large as the other. Will the more massive object have the larger acceleration, an equal accelearation, or a smaller acceleration.
The coefficient of kinetic friction between dresser and the floor is and is the acceleration because of gravity. The floor exerts upward normal forces with magnitudes and where the dresser's legs rest on the floor. Note that this is a 2-dimensiona..
A 6.4g lead bullet traveling at 460m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in te..
A 10 kg runaway grocery cart runs into a spring with spring constant 240N/m and compresses it by 65cm. What was the speed of the cart just before it hit the spring.
A 50.0 g silver spoon at 20.0 C is placed in a cup of coffee at 90.0 C. How much heat does the spoon absorb from the coffee reach a temperature of 89 C.
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other?(Hint: Use charge conservation and solve for one of the initial charges. You will end up with a quadratic equation. The solutions giv..
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
What is the acceleration of two falling sky divers.
How much work the power plant produces in a day. How much energy is discarded to low temperature source in a day.
An electric motor operates at 6 volts. In order to lift a mass of 1 kilogram a distance of 2 meter in 3 seconds, how much current in amps must the motor draw? (Assume the motor is 100% efficient.)
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