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Q. A soccer ball of diameter 31cm rolls without slipping at a linear speed of 2.8 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 18m?
Q. The loaded cab of an elevator has a mass of 2.8 x 103 kg and moves 223 m up the shaft in 26 s at constant speed. At what average rate does the force from the cable do work on the cab?
What is the maximum speed of the car (in km/hr) in the similar turn in the rain, when the coefficient of static friction is reduced to 0.720.
A 10.60 weather rocket generates a thrust of 220. The rocket, pointing upward, is clamped to the top of the vertical spring. The bottom of the spring, whose spring constant is 450, is anchored to the ground.
Determine the direction of the net electrostatic force on charge q3 (angle with respect to the positive x-axis).
A car is travelling at a constant speed of 31.1 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration mu..
how long does it take the boat to make a round trip consisting.
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. It vibrates with a fundamental frequency of 27.5 Hz. What is the total mass of the wire.
Density-Gravity Problem: a) Planet Vulcan has twice the mass of Earth and the same radius. What are its volume, density and surface gravity compared to Earth?
What is the largest wavelength that will give constructive interference at an observation point 171 from one source and 295 from the other source.
A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes time 0.420s to pass this window, which is of height 1.92 m. How far is the top of the window below the windowsill from which the flowerpot ..
Find out a mathematical expression in terms of x, y, and z for the y-component of the force on the particle.
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
What time would an observer on one of the two planets measure for the similar trip. Find out the coordinates of the center of gravity for this system.
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