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A 860 Newton crate rests on the ground. It takes 756 Joule to move it at a constant speed 4.2 meter along the floor against a friction force of180 Newton. Determine how much work is required to move it at a constant speed 4.2 m vertically?
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A car (mass = 1170 kg) is traveling at 42 m/s when it collides head-on with a sport utility vehicle (mass = 2330 kg) traveling in the opposite direction
One vessel contains a mixture of 5 parts pure wine and 3 parts soda, whereas the other vessel contains a mixture of 9 parts pure wine and 5 parts soda. Compare the strength of the wine.
A small moon of a giant planet has an orbital period of 1.77 days and an orbital radius of 4.63 105 km. From these data, determine the mass of the planet
question1a car travelling at 110 rm kmh strikes a tree. the front end of the car compresses and the driver comes to
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
consider the electric circuit shown here consisting of a 12.0-v battery and three capacitors connected partly in series
in a simple model of the hydrogen atom the electron moves in a circular orbit of radius 0.053 nm around a stationary
as two trains move along a track their conductors suddenly notice that they are headed toward each other. the figure
A hollow aluminum cylinder 21.0cm deep has an internal capacity of 2.000 L at 15.0°C. It is completely filled withturpentine and then warmed to 79.0°C. How much turpentine overflows
A 70-kg man and a 55-kg woman holding a 2.50-kg purse on ice skates stand facing each other. What is the woman's recoil speed
A 320 hp car engine can deliver that maximum power at 7000 rpm. What is the engine's torque at that speed
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