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A 140g arrow is shot vertically from a bow whose effective spring constant is 500 N/m .If the bow is drawn 60cm before shooting the arrow, to what height does the arrow rise?
In the "World's Strongest Man" competition, one event is to pull a 2370 kg truck for 5 m. What is the least amount of force
An electron and a proton are each placed at rest in a uniform electric field of magnitude 556 N/C. Calculate the speed of each particle 47.6 ns after being released
a cube of wood floating in water supports a 200g mass at the centre of its top face. when the mass is removed, the cube rises by 2cm. determine the volume of the cube
During a violent storm, the wind over a flat, 200 m2 roof has a velocity of 10 m/s. What is the net force on the roof
Two point charges 3.0cm apart have an electric potential energy -130J . The total charge is 15nC. What is the lesser charge
A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16300 N on the submarine, as well as a downward resistive force of 1090 N. What is the submarine's acceleration?
A string that is fixed at both ends has a length of 1.61 m. When the string vibrates at a frequency of 92.8 Hz, What is the fundamental frequency of the string
A 1.00 kg object is attached to a horizontal spring. The spring is initially stretched by 0.2 m, obtain the maximum speed of the object
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
A wheel free to rotate about its axis that is not frictionless is initially at rest. A wheel free to rotate about its axis that is not frictionless is initially at rest
An airplane must reach a speed of 172 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that would allow the airplane to take off productively.
A prehistoic bug (m=0.02kg) has escaped into the moder world. how fast (and in what direction) is the ubg traveling after the collision
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