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A uniform disk of radius 0.519 m and unknown mass is constrained to rotate about a perpendicular axis through its center. A ring with same mass as the disk's is attached around the disk's rim. A tangential force of 0.213 N applied at the rim causes an angular acceleration of 0.103 rad/s2. Find the mass of the disk.
A 1130 kg car traveling initially with a speed of 25.60 m/s in an easterly direction crashes into the back of a 9 550 kg truck moving in the same direction at 20.0 m/s. What was the velocity of the truck right after the collision
a hoop is rolling without slipping along a horizontal surface with a speed of 4.5 m/s when it starts up a ramp that makes an angle 25 degrees with the horizontal. What is the speed of the hoop
Vector A has a magnitude of 11 and points in the positive x-direction, with the positive x-axis. What is the magnitude of A and B
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. What is the mass of this canister
q1. a carnot engine performs work at the rate of 430 kw while using 710 kcal of heat per second. if the temperature of
A piece of rock weighs 301 N in air and has an apparent weight of 202 N when suspended under water. What are the volume and density of the rock
In an L-R-C series circuit, 305 , 0.401 , and 5.98×10-8 . When the ac source operates at the resonance frequency of the circuit, What is the amplitude of the voltage across the resistor
A 12,600-kg railroad car travels alone on a level frictionless track with a constant speed of 15.8 m/s. What will be the car's new speed
Differentiate the amplitude of a forced oscillator to find the frequency that yields the maximum amplitude. Under what conditions is the maximum driving amplitude close to the natural frequency?
If the top coil were rotated 90 degrees about a vertical axis through the center of the coil so it is perpendicular to the balance coil, how would the results of the experiment change
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A glass bead charged to 3.8 nC exerts an 6.0Ã-10âˆ'4N repulsive electric force on a plastic bead 2.7 cm away
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