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A boy exploring a cave drops a rock into a dark crevasse. He hears the rock strike the bottom 10.1 s after dropping it. The speed of sound is 330 m/s. Find the depth of the crevasse.
A 5.0-g mass if sandwiched between two springs with spring constant k1 aand k2. The mass is didplaced 10 cm from its equilibrium position and makes sixteen complete oscillations in 1 s with no loss of mechanical energy.
You produce an image of the Sun on a screen using a thin lens whose focal length is 28.3 cm. What is the diameter of the image in millimeters
A 1.00 liters vessel contains a monatomic gas under STPconditions. if 32.0J OF ENERGY is added to the gas (at constant volume) what is the new temperature of the gas
A football punter accelerates a football from rest to a speed of 11 m/s during the time in which his toe is in contact with the ball (about 0.24 s). what average force does the punter exert on the ball
Starting from rest, two skaters "push off" against each other on smooth level ice, where friction is negligible. find the recoil velocity of the man relative to the ice
Find the power factor for an RC circuit connected to a 70.0Hz generator with an rms voltage of 155 V
A wire is 1.50 m long and has a diameter of 1.5. The tensile modulus of the wire is 6.20 x 10^10 N /m. what is the increase in length of the wire
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.92 kg and length L = 4.92 m to a uniform sphere with mass ms = 34.6 kg and radius R = 1.23 m. What is the moment of inertia of the object about an axis at the left end of th..
A skid mark has length 25 m. You measure the coefficient of friction between the tire and road as 0.50. determine the initial speed of the car
An engine with an output of 246.0 W has an efficiency of 37.0 %. It works at 11.00 cycles/s. How much heat is rejected each cycle
Water flowing through a garden hose of diameter 2.73 cm fills a 21.0-L bucket in 1.60 min. find the speed of the water leaving the end of the hose
The concrete wall of a building is 0.11 m thick. The temperature inside the building is 23.2°C, while the temperature outside is 0.0°C. Heat is conducted throughout the wall.
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