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Which of the following does not involve a force?
a.tug of war
b.pushing a wagon
c.riding a bike
d.jumping
e.None of the above
f.towing a car
g.hitting a ball
A block of mass 1.6 kg is attached to a horizontal spring that has a spring constant k of 1 x 103 N/m. Calculate the speed and elastic potential energy of the block
A light ray enters a glass slab at point A at an angle of 57.6° with respect to the surface normal and then undergoes total internal reflection at point B. What minimum value for the index of refraction of the glass can be inferred from this?
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. (a) How long does it take for the ball to reach the wall if it is 4.2 m away? ..
A 1.5 kg mass is suspended from a spring with a spring constant 250 N/m. How far does the spring stretch from its equilibrium position
A block of wood is held in place against a rough wall by someone pushing on it with a force directed upward at 28 degree above the horizontal. Compute the mass of the block of wood
A proton, initially traveling in the +x-direction with a speed of 5.75*10^5m/s, enters a uniform electric field directed vertically upward. What is the strength of the electric field
At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81m/s2. What is the mass of this piece of ice on the surface of Io
Calculate the self-inductance of a 55.0 cm long, 10.0 cm diameter solenoid having 1000 loops. How fast can it be turned off if the induced emf cannot exceed 3.00 V
A freight train has a mass of 1.8 x 107 kg. If the train can exert a constant pull of 7.8 x 105N, find how long does it take to increase the speed of the train
A very large number (N+1) polaroids are arranged in a sandwich, The transmission axis of each polaroid is at a constant angle, with respect to its predecessor
The block in the figure below has a mass of 5.7 kg and it rests on an incline of angle %u03B8. determine the angle of the incline
A loudspeaker at the origin emits a 140Hz tone on a day when the speed of sound is 340 m/s. What is the distance between these two points
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