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At a given instant an 58 mH inductor stored an energy of 86 µJ. Determine the current in the inductor at this instant? mA If the current is increasing at the rate of 100 mA/s, determine how long does it take for the energy to increase by a factor of 33 from the initial value?
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
A .120 kg child is standing at rest on a frozen pond. The child throws a 1.5 kg block initially at rest on a level frictionless surface. What is the speed by which the glob-block combination will move immediately after the collision?
A boy 10.5 m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. How far from the tree will the dog catch the ball
The sound from a mosquito is produced when it beats its wings at the average rate of 600 beats per second. Find the wavelength of sound waves produced by mosquito wings
the 3.00 kg cube has edge lengths d = 6.00 cm and is mounted on an axle through its center, what is the period of the resulting SHM
One of the loudest sounds in recent history was that made by the explosion of Krakatoa on August 26-27, what was the decibel level on Rodriguez Island
A child, hunting for her favourite horse, is running on the ground around the edge of a stationary merry-go-round. The angular speed of the girl has a constant value of .250 rad/sec.
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.4 m/s2 for 4.7 seconds. What is the acceleration of the yellow car
A 13.6 kg object on a horizontal frictionless surface is attached to a spring with k = 519 N/m. find the initial potential energy of the block-spring system
Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching tube. Find an expression for the acceleration that will earn you maximum points
How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm2
A person on a balcony that is 28 m off the ground leans over the railing and throws a ball straight up into the air with an initial velocity of 15 m/s. Find with what speed will the ball hit the ground
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