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A skier is accelerating down a 30.0 ^circ hill at 1.80{rm{m/s^2}}. How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 425 {rm m}?
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
A 20 {rm kg} child plays on a swing having support ropes that are 2.3 {rm m} long. A friend pulls her back until the ropes are 39.0^circ from the vertical and releases her from rest.
What fractional increase in tension of one wire will lead to the occurrence of 2 beats/s when both wires oscillate simultaneously.
The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process. Illustrate at what height above the surface of the earth does the balloon have a speed of 8.90 m/s?
A 0.25 kg skeet (clay target) is fired at an angle of 28 degrees to the horizon with a speed of 25 m/s.
The rope makes an angle of 70° with respect to the vertical. What is the tangential speed of the ball.
The metal equilateral triangle in the figure, 20 {rm cm} on each side, is halfway into a 0.10 {rm T} magnetic field.What is the magnetic flux through triangle.
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
The ratio of the average acceleration values is a1/a2 = 1.24. Find out the velocity of the car at the end of the initial ten-second interval.
A meat baster consists of a squeeze bulb attached to a plastic tube. While the bulb is squeezed and free, with the open end of the tube under the surface of the basting sauce.
A 186 watt motor is used to lift a 114kg container to a height of 6m. How much time does it take to lift the container with the motor.
What is the frequency of string that was tightened.How high does it rise above the ground.
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