Determine the momentum of the car
A 30 g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the momentum of the car?
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Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.20 x 10^6 kg/s. If one fourth the potential energy of this water were converted to electric energy, how much power would be produced by these falls?
A ball rolls horizontally off the edge of a tabletop that is 1.08 m high. It strikes the floor 2.80 m away from the edge of the table. What is the initial (horizontal) velocity of the ball? Ignore air resistance.
What pressure? The Pressure exerted by the tires on the road, which is determined by (but is somewhat greater than) the Air pressure in its tires. Can you see how this relates to Home Project 1?
A force of 78gm acts at the point (2,3,5) the direction cosines of its line of action being as 2:2:1 find the magnitude of its moment about the joining the origin to the point (2,3,4)?
Now the student extends his arms horizontally to increase the moment of inertia by 0.138 %. Find the new angular speed of the system?
A recording engineer works in a soundproofed room that is 45.0 dB quieter than the outside. If the sound intensity in the room is 1.30 10-10 W/m2, what is the intensity outside?
The current in a solenoid with 22 turns per centimeter is 0.50 A. The solenoid has a radius of 1.5 cm. A long, straight wire runs along the axis of the solenoid, carrying a current of 23 A. Find the magnitude of the net magnetic field a radial dis
The flywheel of a steam engine runs with a constant angular speed of 129 rev/min. When steam is shut off, the friction of the bearings and the air brings the wheel to rest in 2.1 hours. What is the magnitude of the constant angular acceleration of
The Stanford linear accelerator contains hundreds of brass disks tightly fitted into a steel tube (see figure). The coefficient of linear expansion of the brass is 2.00 10-5 per C. The system was assembled by cooling the disks in dry ice (-57C) to
Geiger counter registers 416 counts per minute. 65.0 hours later, the counter registers 13 counts per minute. What is the half life of the isotope?
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