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A car is traveling north along a straight road at 50 KM/H An instrument in the car indicates that the wind is directed towards the east. If the car's speed is the instrument indicates that the wind is directed towards the north-east. Determine the speed and direction of the wind.
A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit, if the current exceeds apredetermined value. Suppose that the material to be used in a fusemelts when the current density rises to 410 A/cm2.
The suspended 2.82 kg mass on the right is moving up, the 2.2 kg mass slides down the ramp, and the suspended 8.1 kg mass on the left is moving down. There is friction between block and ramp. What is the acceleration of a three block system.
Demonstrates how the forces can vary in problems of this type. A hiker, who weighs 857 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 4420 N, and rests on two concrete supports, one on each end.
A solid sphere of mass 6.0 kg is mounted on a vertical axis and can rotate freely without friction, What is the speed of the block after it has fallen 80 cm
What is the wavelength of the 49,000-Hz radio wave used by "radio-controlled" clocks and wristwatches?
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.40 106 N/m and is compressed 3.58 cm as the car is brought to rest. What was the speed of the car before impact, as..
A 5.0-kg mass attached to a spring is displaced 8.0 cm from equilibrium position. What is the frequency of the oscillation
A single coil with a radius of 0.02 m is placed inside a 3m longsolenoid that has 600 turns. The radius of the solenoid is 0.15 m.The plane of the coil is perpendicular to the axis of the solenoid.The solenoid is connected to a battery, an ammeter..
During a physics experiment, helium gas is cooled to a temperature of 19.0K at a pressure of 0.140 atm. What are the average energy per atom
a glass window pane has an area of 3.00 m and a thickness of 0.600 cm. if the temperature difference between its faces
An electric power station is producing 1.2 x 10+3 W of power that is to be sent to a small town located 13 km away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5 x 10-2 Ohms /km. Find the powe..
A bulk modulus of aluminum is 7.1 x 1010 N/m2. If the density of aluminum is 2.7 x 103 kg/m3, then compute what is the speed of sound in aluminum
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