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1. On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and they hit the water 1.59 s later. How high was the bridge?
2. How fast were the swimmers moving when they hit the water?
3. What would the swimmer's drop time be if the bridge were 2.5 times as high?
q1. starting from rest an13 kg block slides13.3 m down a frictionless ramp inclined at 30? from the ?oor to the bottom.
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
A(n) 150 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a 23.0 V battery, what is the unknown capacitance
You have two 120V AC:24V AC transformers, 16 high-voltage capacitors and 10 high-voltage diodes. What is the maximum voltage of your circuit
Suppose a 170-kg motorcycle has two wheels, and is heading toward a hill at a speed of 30.0 m/s. How much energy is lost to air resistance
An inductor has an inductance of 0.015 H. The voltage across this inductor is 49 V, What is the current in the inductor
A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 18 °C when it was installed. What is its change in length
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
Suppose you pour water into a container until it reaches a depth of 44.6 cm. What is the pressure at the bottom of the container
a 10.0 kg watermelon and a 7.00 kg pumpkin are attached to each other via a cord that wraps over a pulley. find the accelerations of the pumpkin and the watermelon
The rms current in an RL circuit is 0.32A when it is connected to an ac generator with a frequency of 60Hz and an rms voltage of 25V. Find the rms voltage across the inductor
A Hollywood daredevil plans to jump the canyon shown in the figure on a motorcycle. What is his predicted landing velocity
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