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A 30.0 kg hammer strikes a steel spike 2.30 cm in diameter while moving with a speed of 20.0 m/s. The hammer rebounds with a speed of 10.0 m/s after a brief collision time estimated at 0.110 s. What is the average strain in the spike during the impact?
Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg.
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
A 32cm string being held at a tension of 64.5N has a fundamental frequency of 440Hz. What are the second and third harmonics of the string
Star Wars particles consist of a beam of charged particlesshot at a distant target. Let's assume that the beam consists of1.00 mA beam of 200 MeV protons coasting through free space. Determine the number density of the beam
An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. determine The change in wavelength of the scattered x-ray
A space station consists of two donut-shaped living chambers, Aand B, that have the radii shown in the figure. As the stationrotates, an astronaut in chamber A is moved 1.48 x 102 malong a circular arc. How far along a circular arc is an astronautin ..
Air at 90 kpa and -10 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 4 times the inlet area. Determine (a) the exit temperature and (b) the ..
Suppose that during the launch of a rocket from the surface of the earth, Determine the acceleration of the rocket
why to Assume charge 1 is located at the origin of x axis. A ball is thrown directly downward with an initial speed of 8.70 m/s, from a height of 30.6 m. After what time interval does it strike the ground.
A crate is dragged 3m across a rough floor at a constant speed by a worker applying 500N at an angle of 30 deg above the horizontal. a) How many forces act on the crate? (identify them). b) How much work does each force produce?, c) What is the total..
question1a 43 n toys is placed in a light swing that is attached to ropes 3.5 m long.a discover gravitational potential
A camera has a lens with a focal length of 24.9 cm. how far from the film should the lens be placed
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