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Q. A helicopter is ascending vertically with the speed of 8 m/s. At a height of 65m above the Earth, a package is dropped from a window.
How much time does it take for the package to reach ground?
What is a density of the block
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
Which vector would return the hiker to the starting point? All angles are measured in a counter-clockwise direction from the positive x-axis.
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 27 m. He then makes another 90.0° turn and moves 14 m.
Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Determine the volume of each cube.
Get the expression for how moving clocks run slowly when seen by observers at rest.
You push with a 20N horizontal force on a 2 kg mass resting on the horizontal surface against a horizontal friction force of 12N. What is the acceleration.
What is the amplitude of the subsequent oscillations. A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 519 N on the glove, so that the glove is displaced 10.0 cm, how much work is done by the ball.
A 5.40×10-2- wad of putty is thrown horizontally at the block, hitting it with a speed of 2 and sticking. far does the putty-block system compress spring.
A rectangular block of ice 7.00 m on each side and 1.80 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. How high does the top of the ice block float above the water level.
What is the change in entropy for the system. How much force must be applied to climb the hill at the same speed and same air resistance.
A particle with a charge of q = -5.00 nC is moving in the uniform magnetic field of vec{B}=( -1.20 T ) hat{z}. The magnetic force on the particle is measured to be vec{F}= ( -7.60×10-7 N )hat{y}.
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