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A 0.452 kg block of ice is compressed a distance of 0.13 m against a spring with a spring constant of 378 N/m and is released. Use conservation of energy to calculate the height of the block when it stops.
The heating element of a clothes dryer has a resistance of12.7 Ohms. A voltage of 240 V is connected across the heatingelement. What is the current in the heating element?
A-3.18. A B-2A is flying at 43,000 ft in standard day conditions at 400 KTAS. The mean chord length is 39.6 ft. Find the overall or total Reynolds number for the aircraft
A baseball pitcher pitches a fastball with a horizontal velocity of 40 m/s. The horizontal distance from the point of release to home plate is 17.50 m. what is the instantaneous linear veloity of the sweet spot at the instant of ball contact
Bob holds a ball at a height of 2.5 m above the ground and tosses it vertically upward with an initial speed of 3.5m/s. How long does it take his ball to reach the ground
A guitar string is 90 cm long and has a mass of 3.8g. What are the frequencies of the fundamental and first two overtones
In the figure below, the converging lens' focal length is 14.4 cm, d = 13.6 cm, and the diverging lens' focal length is -14.1 cm. Where is the image formed by the converging lens,
Two people with a combined mass of 115 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.24 cm. Find the total load supported by the springs
A pitcher throws a curveball that reaches the catcher in 0.55s. The ball curves because it is spinning at an average angular velocity of 280rev/min (assumed constant) on its way to catcher's mitt.
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
The Moon's mass is 7.36x10^22 kg and its assumed circular orbit has radius 3.84x10^8 and a period of 27.3 days. Find the moons kinetic energy.
A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected
assume you are standing on a train, both feet together, facing a window. The front of the train is to your left. The train starts moving forward.
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