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A 0.15 kg arrow is firedhorizontally. The bowstring exerts a constant force pf 65 N on thearrow over a distance of 0.45 m. Determine:
a) How much work is done by the bowstring on the arrow.
b) The speed of the arrow when itleaves the bow.
A vertical spring stores 0.962 J in spring potential energy whena 3.5-kg mass is suspended from it.(a)by what multiplicative factordoes the spring potential energy change if the mass atttached tothe spring is doubled?(b)verify your answer to part (a)..
the primary coil of an ideal transformer has 700 turns and the secondary coil has 190 turns.a if the primary coil
The locomotive is moving at 25 km/h. The engineer of the high speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
A large power plant converts 1000 kg of water to steam every second to run its generators. Compute the amount of heat required each second just to vaporize the water, assuming this is done at 100 C. What is the power input in megawatts for this pu..
A glass lens has a scratch-resistant plastic coating on it. The speed of light in the glass is 0.659c, At what angle with respect to the normal is the ray transmitted
A 238 kg cast-iron car engine contains water as a coolant. Suppose the engine's tempera- ture is 33C when it is shut off and the air temperature is 8C. What mass of water is used to cool the engine
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. If the vehicle has a speed of 20.5 m/s at point , what is the force exerted by the track on the car at this point
Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, what is the expected angle of refraction in sheet 3
If 114 g of calcium chloride is formed when 43.4 g of calcium is reacted with chlorine. How much chlorine combined with the calcium
A person walks in the following pattern: 9.8 km north, then 9.8 kmwest, and finally 3.0 km south. Constructthe vector diagram that represents this motion and from it judge how far and in what direction a bird would fly in a straight line from the ..
consider a system of particles in three dimensions with momentum p and energy E=cIpI,c being the constant.the system is maintained at the inverse temperature 'bita' , volume 'V' and chemical potential 'mu'.
a ball is thrown vertically upward and then comes back down. describe the behavior of the balls velocity and
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