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A 200 g block is pressed against a spring of force constant 1.4 k N/m until the block compresses the spring 10 cm, the spring rests at the bottom of a ramp inclined at 60 degrees to the horizontal. Using energy considerations, decide how far up the incline the block moves before it stops (a) if the ramp exerts no friction force on the block and (b) if the coefficient of kinetic friction is 0.400.
A high-voltage transmission line with a resistance of 0.265 %u2126/km carries a current of 1.25 kA. What fraction of the transmitted power does this loss represent
a child pulls a 11-kg wagon with a horizontal handle whose mass is 1.8-kg giving the wagon and handle an acceleration
a particular sprinter reaches a horizontal acceleration of 13.4 ms2 out of the starting block. the starting block is
If a soldier shoots an enemy with the intent of killing him, he wants the bullet to deliver maximum energy. On the other hand, if he wants to merely knock someone down (say for dispersing a riot) he wants the bullet to deliver maximum force.
you are traveling in a car going at a constant speed of 100 kmhr down a long straight highway. you pass another car
A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. What is the rate of heat conduction through the stove wall
consider an electron in a 1-d box of length 258 pm.a. what is the zpe in j per electron? in kjmole?b. where would the
A monkey is chained to a stake in the ground. The stake is 3.00m from a vertical pole, and the chain is 3.4m long. How high can the monkey climb up the pole?
Calculate the total time for car A to travel the 15.0 m and after the collision, car B moves to the right at a speed of 4.8 m/s. Calculate the velocity of car A after the collision.
An unstretched elastic spring has a mass M = 3.75 kg and a length of l0 = 0.525 m. What is the elastic potential energy of the spring
A certain transformer has 500 turns on the primary. If 10 volts are applied to the primary, what was the current in the primary
a 200-turn rectangular coil having dimensions of 3.0 cm by 6.0 cm is placed in a uniform magnetic field of magnitude
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