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An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.78 m/s, and its maximum acceleration is 7.61m/s2. Determine how much time elapses between an instant when the object's speed is at a maximum and the next instant when its acceleration is at a maximum?
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.90 m/s2, What angle does the ramp make with respect to the horizontal
A horizontal cylinder thermally insulated and closed in both ends has in its interior a diathermic piston that can move without friction. Initially the piston is fixed in such way that it divides the volume in two unequal parts, V0 to the left and..
A 15m long rope of m=1.8kg is stretched such that the tension in the rope is 25N. calculate the displacement of a particle in the rope at t=10s, when the wave is at x=0.5m
Two wires are separated by 3.0 cm and each is of length 1.5 m. They repel each other with a force of 4.0 N. The current in one wire is 5.0 A. find the current in the other wire
A child is pushing a merry-go-round. The angle through which the merry-go-round has turned varies with time according to ?(t)=?t+?t3, What is the initial value of the angular velocity
A grey kangaroo can leap a distance of 11.78 m on horizontalground. What is the minimum take off speed for such a leap
If the partial pressure of water vapor is 47 mm Hg in the lungs at 760 mm Hg pressure, what percentage of air does the water vapor constitue
A copper ball with a radius of 1.70 cm is heated until its diameter has increased by 0.160 mm. Assuming an initial temperature of 22.3°C, calculate the final temperature of the ball
a compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12
Although they don't have mass, photons-traveling at the speed of light-have momentum. How fast could the ship be moving after 35 days
A 160 pound pilot of an airplane executes a constant speedloop-the-loop maneuver in a vertical plane. what is his apparent weight at the highest point
A square plate of copper with 54.0 cm sides has no net charge and is placed in a region of uniform electric field of 84.0 kN/C directed perpendicularly to the plate. Find the charge density of each face of the plate
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