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You are climbing in the High Sierra where you suddenly find yourself at the edge of a fog shrouded cliff. To find the height of this cliff, you drop a rock from the top and 10.0 s later hear the sound of it hitting the ground at the foot of the cliff. (a) Ignoring air resistance, how high is the cliff if the speed of sound is 330 m/s? (b) Suppose you had ignored the time it takes the sound to reach you. In that case, would you have overestimated or underestimated the height of the cliff? Explain your reasoning.
Red light of wavelength 666.0 nm produces photoelectrons from a certain photoemissive material. What is the material's work function
In a typical golf swing, the club is in contact with the ball for about 0.0010 s. estimate the magnitude of the force exerted by the club on the ball
q1. calculate relation between radiation power if sphere with temperature 1000k and diameter 100m and smother sphere
A 0.36-kg object connected to a light spring with a force constant of 24.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. find the temperature of the inner surface of the bottom of the pot
A 2.65-g copper coin at 21.5°C drops 60.0 m to the ground. (Assume the specific heat of copper is 387 J/kg · °C.) determine the coin's final temperature
A box slides down a ramp between a delivery area and soring area. You must determine the angle this ramp should have with the horizontal direction so that a 500 pound box takes 5.0 seconds to slide down the ramp starting from rest at the top. While t..
consider a 160 turn circular conducting coil with a radius of 15.4 cm. this coil rotates about an axis which passes
Two capacitors are connected to a battery. The battery voltage is V = 90 V, and the capacitances are C1 = 2.00 ?F and C2 = 4.00 ?F. Determine the total energy stored by the two capacitors
if the tension in the string is increased by 1.4%, what will be the new fundamental frequency, if the original was 245 Hz?, and the length of the string is .76m
Water is pumped into a storage tank from a well delivering 17 gallons of water in 33 seconds throughout a pipe of 1.0 in 0.2 cross-sectional area. What is the average velocity of the water in the pipe as the water is pumped from the well?
At standard pressure, what would the temperature of water molecules be if they had a root mean square (rms) of velocity of 5.87 m/s
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