What is the centripetal acceleration of the hammer
An athlete whirls a(n) 7.16 kg hammer tied to the end of a(n) 1.2 m chain in a horizontal circle. The hammer moves at the rate of 1.47 rev/s..(a) What is the centripetal acceleration of the hammer?(b) What is the tension in the chain?
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a motor boat haeds due east at 5.0 m/s acorss a river that flows toward the south at 5 m/s. If the river is 125m wide, how longs does it take the boat to cross the river?
A hanging wire made of an alloy of lead with diameter 0.05 cm is initially 2.6 m long. When a 4 kg mass is hung from it, the wire stretches an amount 3.24 cm. A mole of lead has a mass of 207 grams, and its density is 11.4 g/cm3. Based on these e
In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work W is done by the external agent acting on the dielectric?
A capacitor when fully charged holds 5.0 J of energy. When it is connected across a 10-kΩ resistor, 2.0 J of energy is dissipated in 8.5 ms. What is the capacitance of the capacitor?
A 62-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when: the elevator is descending at a constant rate of 12 m/s?
On a very muddy football field, a 100 linebacker tackles an 75 halfback. What is the direction of this velocity?
Draw two diagrams for the situation where a moving train (with initial speed V0) collides elastically with a target train that is not initially moving, and the trains use their springy bumpers to bounce off each other without damage
An open train car moves with speed 15.8 m/s on a ?at frictionless railroad track, with no engine pulling the car. It begins to rain. The rain falls straight down and begins to ?ll the train car.
The bullet fully embeds itself in the block before the bullet-block system launches off the table. How far in the x-direction will the block-bullet system travel before striking the ground?
6 cm long solenoid 1.2 cm in diameter is to produce a field of 0.085 T at its center. How much current should the solenoid carry if it has 1100 turns of the wire?
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