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A block of mass m starts from rest at the top of a ramp of vertical height h . The block slides down frictionless ramp and reaches a speed v at the bottom . if the same bock were to reach a speed 3v at the bottom , it would need to slide down a frictionless ramp vertical height ?
a)2h B)3h c)9h D ) none of the above ? please explain why
A bicycle has wheels with a diameter of 0.67m. It accelerates uniformly and the rate of rotation of its wheels increases from 191 rpm to 260 rpm in a time of 21.70 s. Find the linear acceleration of the bicycle.
Your car tire is rotating at 3.9 rev/s when suddenly you press down hard on the accelerator. What is the tires angular acceleration
The primary coil of a transformer has 3,802 loops. The secondary coil has 602,030 loops. The primary coil has a 97 A current and 2 V. ) Determine the power of the primary coil......W. Assuming no losses, determine the power of the secondary coil......
A UFO streaks across the sky at a speed of 0.90c relative to the earth. What length does the person measure for the UFO when it lands
What is the freezing point of human blood and What would be your hypothesis why salt water freezes at a lower temperature than pure water
A 8 000-N shark is supported by a rope attached to a 4.80-m rod that can pivot at the base. Find the horizontal force exerted on the base of the rod
Suppose a tank contains 826 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. What is the increase in the internal energy of the neon
The minute hand of a wall clock measures 14 cm from its tip to the axis about which it rotates. The magnitude and angle of the displacement vector of the tip are to be determined for three time intervals.
On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 2.5 times as far as he would have on earth, what is the maximum height of the ball
Object O1 is 14.7 cm to the left of a converging lens with a 10.8-cm focal length. What is the overall magnification of this system
A 3-kg sphere makes and inelastic collinsion with a second sphere initially at rest. What is the mass of the second sphere
Air in a diesel engine cylinder is quickly compressed from an initial temperature of 20 °C, an initial pressure of 1 atm, find the final temperature and pressure
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