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Q1. A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill?
Q2. John Daly hits a golf ball at the angle of 25.0 degrees to the ground. If the golf ball covers a horizontal distance of 301.3 m. what is the ball's maximum height? (Hint- at the top of its flight, the ball's vertical velocity component will be zero.)
What is the least speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track
An archer puts a 0.26 kg arrow to the bowstring. An average force of 213 N is exerted to draw the string back 1.3 m. unless otherwise directed, suppose that air resistance is negligible. Illustrate energy bar graphs to solve the problem.
What is magnitude of the net force on the student
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
The coefficient of static friction
Determine the magnitude when the force on the wire
The angular momentum of the electron as it moves around the center of the circle is 1.40 × 10-25J•s.Find the radius of the circular path.
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine .
A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator.
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
What is weight of the parachutist
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