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Question: A rock is dropped into a deep hole and 1.6 s later the sound of striking the bottom is heard.
Question 1: If the speed of sound is 340 m/s, what is the depth of the hole?
Please show work on how to solve above question!
THe Voyager one has a 20-W radio transmitter and is expected to transmit to 2025 when it is 25 billion km from the earth. WHat's the Diameter of a dish antenna
A proton traveling at 26.0° with respect to a magnetic field of strength2.80 mT experiences a magnetic force of6.2 10-17 N. Compute the proton's speed. Compute its kinetic energy.
A 9.8 V battery is connected to a bulb whose resistance is 1.4 . How many electrons leave the battery per minute
How many days does it take for a perfect blackbody cube (0.0206 m on a side, 66.9 °C) to radiate the same amount of energy that a one-hundred-watt light bulb uses in one hour?
A quarterback claims that he can throw the football a horizontal distance of 196.6 m (215 yd). Furthermore,he claims that he can do this by launching the ball at the relatively low angle of 25° above the horizontal. To evaluate his claim,determine..
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
an 10-kg ball moving at 22 ms collides elastically and head-on with a second 6-kg ball moving in the opposite direction
find the resonance frequency of the ear canal. treat it as a half-open pipe of diameter 7.3 mm and length 24.5 mm.
Starting with a pure Sr-90 sample at time t=0, a researcher finds that the Y-90 activity is 22.9 mCi at t = 1 day. What was the activity at t = 0
2.2 mol of neon gas is initially at a pressure of 1.8 atm and a temperature of 253oc. i if the gas is cooled at
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
A cylindrical aluminium rod is attached to a wall by a hinge. A copper cable is attached to the rod at point three-quarters of its length away from the wall and used to support the rod in a horizontal position.
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