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Concrete has a specific heat capacity of 670 joules/kg-0 C. A 2 kg concrete block, that has a temp of 20 degrees Celsius, is dropped from a height of 100 meters. What is its temp after it hits the ground if it lost no heat to the surrounding environment?
Secondly, if the block is raised back to 100 meters without gaining or losing heat from the environment, What is the blocks temp after it was raised?
A 1.0-kg block is pushed up a rough 22° inclined plane by a force of 7.0 N acting parallel to the incline. Determine the magnitude of the force of friction acting on the block
The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.3 m/s . Initially, the car is also traveling at a speed 19.3m/s, How much time is required for the car to pass the truck
Consider a Bragg mirror with nhigh=3.5, nlow=3.1, thigh=60.7nm, tlow=68.5nm , estimate the overlap of light with low index material
At the bottom of its path, the ball strikes a 3.80 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find out the speed of the ball just after the collision ?
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
Four identical springs are used as part of a car's suspension system, one on each wheel. What will be the frequency at which the car will bounce
What is magnitude of the net force on the student
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
What is the capacitance after the separation becomes 2d.
A 150 g aluminum cup contains 150 g of water and both are at 13 C. If you add 150 g of hot water at 90 C what is the final temperature at thermal equilibrium? How much hot water at 90 C needs to be added to achieve a final temperature of 44 C?
Blocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block.
Three ships leave a spacestation at nearly the same time. As seen by a spacestation observer, Find the speed and direction of ships 2 and 3
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