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a meter rule hangs motionless supported at 30cm mark. It has a 0.02kg mass hanging from the 0meter mark. what is the mass of the meter rule?
A 15.0kg block is attached to a very light horizontal spring of force constant 550N/m, Find the maximum distance that the block will compress the spring after the collision
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
When blue light of wavelength 465 nm illuminates a diffraction grating, it produces a 1st order utmost but no 2nd order maximum.
A wheel rotating about a fixed axis has an angular position given by q = 3- 2.0t3, where q is measured in radians and t in seconds. What is angular acceleration of the wheel at t = 2.00s.
A projectile of mass 7 kg is fired with an initial speed of 193 m/s at an angle of 16? with the horizontal. At the top of its trajectory, projectile explodes into two fragments of masses 4 kg and 3 kg.
Objects A and B are both positively charged. Both have a mass of 200g, How large is the force on A and What is the charge qA and qB
Find out an acceleration of mass and tension in the string
How far from the center of the earth must a person be to experience acceleration as the reason of gravity that is one half the acceleration at the surface.
While an elevator of mass 824 kg moves downward, the tension in the supporting cable is a constant 7736 N, What is the elevator's speed at t = 4.10 s
Measurements with microelectrodes have shown that a 0.30-nm-diameter potassium ion(K+) channel carries a current of 1.8 pA, How many potassium ions pass through if the ion channel opens for 1.0 ms
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
A dynamite blast at a quarry launches a rock straight upward, and later it is rising at a rate of 15m/s. Assuming air resistance has no effect on the rock, calculate the total time the rock is in the air.
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