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A 5.5-kg block slides on a level surface and stops because of friction. Its initial speed is 9.0 m/s and the temperature of the surface is 20oC.
Determine the entropy change of the block, which is the system in this process.
A block is resting on a ramp with coefficient of friction between the blockand the ramp being .350, What is the max angle that the block can make without slipping
assume a perfectly elastic collision between a 916g bat and a 145 g baseball. Find the bat's speed before and after the collision
What is least amount of work required by an external force
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
A 8796 lb force is applied to a surface that measures 37 in long and 15 in wide. Determine the pressure exerted on the surface by the force in both psi and Pa. 1 Pa = 1.45×10-4 psi
an unstable particle at rest breaks up into two fragments of unequal mass. the mass of the lighter fragment is equal to
An 81 kg boat that is 9 m in length is initially 7.8 m from the pier. A 20 kg child stands at the end of the boat closest to the pier. How far is the child from the pier when she reaches the far end of the boat
The dissimilarity in electric potential among a thunder cloud and the ground is 2.38*108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential. Decide the change in electric potential energy of on..
Some asteroid fragments are large enough to not completely burn up in the atmosphere and they end up on the surface of the Earth. how could you determine which type of radiation was being emitted
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A speaker generating a tone at 348 Hertz is stationary. A person is moving toward the speaker with a speed of 32 meter per second. Find the frequency of the tone perceived by the person
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
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