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At a carnival, you can try to ring a bell by striking a target with a 9 kg hammer. In response, a 0.4 kg metal piece is sent upward toward the bell, which is 5 m above. Suppose that 25% of the hammer's kinetic energy is used to do the work of sending the metal piece upward. How fast must the hammer be moving when it strikes the target so that the bell just barely rings?
Calculate the work done by 0.935 mol of an ideal gas when it expands isothermally from 225 bars to 1.71 bars at (a) 300 K and (b) 1000 K.
A volleyball play jumps into the air by first lowering his body by. .4 m and then accelerating by straightening his legs rapidly. what is the force exerted by his feet on the floor
A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached. determine the amount by which the spring is compressed
A thermodynamic system undergoes a process in which itsinternal energy increases by520 J. what is the energy transferred toor from it by heat
A block of weight 4.5 N is at rest on a horizontal table. An upward vertical force of 2.2 N is applied to the block by means of a string. What is the magnitude of the force exerted by the block
An individual is running around a turn with an 11 m radius at 3.75 m/s. What is the runner's centripetal acceleration
At Zion National Park a loud shout produces the echo 3.40 s later from a colourful sandstone cliff. How far away is the cliff.
Calculate the frequency and period of a pendulum of mass 10 kg and a) length .5 meters, b) length 5 meters.
The coefficient of kinetic friction between a suitcase and the floor is 0.272. how far can it be pushed across the level floor with 630J of work
A coil of four circular loops of radius 3.0cm carries a current of 5.0A clockwise, What is the magnetic field at the center of the coil
An unknown tuning fork produces a beat frequency of 3Hz when played with a 440Hz fork, What is the frequency of the unknown fork
As a result of the distribution illustrate what is scotts basis in the a/r and land, and explain how much gain or loss does he recognize?
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