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In order to keep a leaking ship from sinking, it is necessary to pump 10.6 lb of water each second from below deck up a height of 1.85 meter and over the side. Find the minimum horsepower motor that can be used to save the ship?
At the Earth's surface, a projectile is launched straight up at a speed of10.5km/s. To what height will it rise
when boiling water a hot plate takes an average of 464 seconds to boil 110 milliliters of water. assume the temperature
A slingshot fires a pebble from the top of a building at a speed of 14.0m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired horizontally.
A box is fixed to a rope and is kept moving uniformly on a circleof radius 1m the rope exerts a force of 10N on the box. Calculate the work done by the rope on the box
If you pour 0.0100 kg of 20C water onto a 1.20kg block of ice which is initially -15C what is the final temperature
A radio galaxy has an angular extent of 2°, and the associated optical galaxy has its spectral lines redshifted by 15% of their rest wavelength
The maximum current in a particular type of solenoid (used in strong B field research) can be as large as 4 kA. what is the maximum size of the magnetic field produced inside the solenoid
Light of wavelength 619 nm is incident normally on a diffraction grating. Two adjacent maxima occur at angles given by sin ? = 0.20 and sin ? = 0.32. The fourth-order maxima are missing, What is the separation between adjacent slits
An ancient bone contains 47.5% as much 14~C~6 as a piece of living matter with an equal carbon content. How old is the bone
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 5.54 m/s relative to the ground. How fast is the train moving
A helicopter is flying horizontally at a speed of 60 m/s and accidentally drops a storage pod from an elevation on 300 m. Neglect air resistance, find what is the total distance the storage pod covers
The springs of a 1400 kg car compress 6.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations.
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