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A plank 2.00 cm thick and 15.1 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 74.4 kg is forced to stand on the very end. If the end of the board drops by 4.70 cm because of the man's weight, find the shear modulus of the wood.
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At one instant a bicyclist is 53m due east of a park's flagpole, going due south with a speed of 12m/s. Then 37s later, the cyclist is 53m due north of the flagpole, going due east with a speed of 12m/s. For the cyclist in this 37s interval.
Two people are holding up the ends of a 4.75-kg wooden board that is l = 2.00 m long. A m = 3.00-kg box sits on the board, 0.50 m from one end. What forces do the two people exert.
when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose stiffness is 3.0 105 N/m. Explain how much must we compress the spring?
(a) How tall is the lamp's image if the lamp is a distance of 39.6 cm from the mirror (include sign if negative)? (b) How tall is the lamp's image if the lamp is a distance of 85.8 cm from mirror (include sign if negative)?(c) How tall is the lamp..
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.795 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
A ceiling fan with 89.00 cm diameter blades is turning at 61rpm. Suppose the fan coasts to a stop 26s after being turned off.
Calculate the potential energy of a rock with a mass of 55 kg while sitting on a cliff that is 27 m high.
How high will a 0.32kg rock go if thrown straight up by someone who does 119J of work on it? Avoid air resistance.
Light has a wavelength of 299.3 nm and a frequency of 7.403 × 1014 Hz when traveling through a certain substance. What is the refraction index of this medium
A 12.0-V battery produces 205mA when it's across a 47.5? load, Find the potential difference across the battery's terminals
The position of an object as a function of time is r? =(3.2t+ 0.90 t2)i^+(1.7t? 1.2 t2)j^m, Find the object's magnitude of the acceleration and What is the direction of the acceleration
A 200 lbs guy wants to slide down a plastic slide 24 ft long and on a 30 degree angle, after that the slide goes horizontally for 6 feet. Taking friction into consideration, how fast would he be going down the slide.
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