How much force does the 8.0 block exert on 9 block
Blocks with masses of 4.0 , 8.0 , and 9.0 are lined up in a row on a frictionless table. All three are pushed forward by a 13 force applied to the 4.0 block. How much force does the 8.0 block exert on the 9.0 block?
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A 100-kg barrel with a radius of 25.9 cm has two ropes wrapped around it, as shown in the figure. The barrel is released from rest, causing the ropes to unwind and the barrel to fall spinning toward the ground.
What does the card experiment in which people were not told the number of red and black cards reveal about people's attitude towards risk and uncertainty?
A piece of wire with mass per unit length 70 runs horizontally at right angles to a horizontal magnetic field. A 5.7 current in the wire results in its being suspended against gravity.
The first person is initially moving forward with a speed of 2.50 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
What is the frequency shift of a 68 police radar signal when it reflects off a car moving at 117 ? (Radar waves travel at the speed of light.)
The position of a squirrel running in a park is given by r=[(0.280m/s)t+(0.0360m/s^2)t^2]+(0.0190m/s^3)t^3.
How does the weather in the United States this year compare to normal? Who benefits and who loses because of this weather?
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