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Question: A car of massmtraveling at speedvcrashes into the rear of a truck of mass 2mthat is at rest and in neutral at an intersection. If the collision is perfectly inelastic, what is the speed of the combined car and truck after the collision?
Assuming the sun to radiate like an idea thermal source at a tempterature of 6000 K, What fraction of the total solar radiation
A heat engine operates between two reservoirs at temperatures of 19.5oC and 313oC. What is the maximum efficiency possible for this engine
A light bulb is connected to a 240 Vwall socket. The current in the bulb depends on the time taccording to the relation I = (2.121 A) sin[ (439.6Hz) t ]. What is the frequency of the alternating current
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
question why is it that a grow-lamp tube has an apparent color temperature of 5500 k and is cool to the touch. however
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find out the mass of the worker.
Two rigid rods are oriented in parallel to each other and to the ground. Determine the current in the rods
The plate on the back of a certain computer scanner says that the unit draws 0.38A of current from a 120V , 60Hz line. Find the average square of the current
Water flowing through a 2.2 cm -diameter pipe can fill a 400 L bathtub in 6.0 min. What is the speed of the water in the pipe
A Styrofoam box has a surface area of 0.76 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam
What is the energy of the photon that, when absorbed by a hydrogen atom, could cause the following?
You are in a radar station on the coast. You are monitoring the motion of two ships. The Pequod is 4.00 km away, What is the speed of the Jeroboam seen by Captain Ahab
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