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Q. An oil drop whose mass is determined to be 3.5×10^-15 kg is held at rest between two large plates separated by 1.4 cm when the potential difference between them is 330 V.
Q. Attempting to stop on a slippery road, a car moving at 80 skids across the road at a 30 angle to its initial motion, coming to a stop in 3.8.
Find tension in the back muscle and the compressional force
What is total mechanical energy of the motion
A potter's wheel having a radius 0.55m and a moment of inertia 12.5 kg·m2 is rotating freely at 55rev/min. The potter can stop the wheel in 6s by pressing a wet rag against the rim and exerting a radially inward force of 68 N.
Determine the efficient spring constant of the molecule
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
What is constant acceleration
A bucket of mass 1.50 is whirled in a vertical circle of radius 1.20. At the lowest point of its motion the tension in the rope supporting the bucket is 25.00 N. Find out the speed of the bucket. How fast must the bucket move at the top of the circle..
You hold a spherical salad bowl 90 cm in front of your face with the bottom of the bowl facing you. The salad bowl is made of polished metal with a 35 cm radius of curvature. What is the image (your face's image) distance along the central axis fr..
Introductory Mechanics: Calculate the smallest coefficient of static friction
Fairgoers ride a Ferris wheel with a radius of 4.35m, the bottom of which is 1.75m from the ground. The wheel completes one revolution every 30s. A passenger drops his keys when he is three quarters of the way up and at the 10 o'clock position. Wh..
On another planet the simple pendulum consisting of a 0.154 kg mass suspended on a 1.20 m long string has a period of 3.860 seconds. What is acceleration on this planet.
A U-shaped tube is open to the air at both ends and is partially filled with Mercury (density = 13,600 kg/m3). Water (density = 1000 kg/m3) is poured into the left arm until the water is 10 cm deep. How long upward from its initial position does t..
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