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An object, initially moving at 23 meter per second, is accelerated at 15 m/s2 for 5 sec, Find what distance does it travel in the 5 s time interval?
A 20 kg wood ball hangs from a 2.0 meter long wire. The maximum tension the wire can withstand without breaking is 400 N. What is the largest speed this projectile can have without causing the cable to break
At a coal burning power plant a steam turbine is operated with a power output of 483 MW. Determine at what rate is heat discarded to the environment by this power plant
A park ranger wants to shoot a monkey hanging from a branch of a tree with a tranquilizing dart. The ranger aims directly at the monkey, not realizing that the dart will follow a parabolic path and thus will fall below the monkey.
A 3.00-g bullet traveling horizontally at 413 m/s hits a 28.0-g wooden block, compute The speed of the block after the collision
A painter is using a ladder to paint the outside of a house. The ladder, which is 8.44 m long and has a mass of 23.7 kg, Calculate the net torque acting on the ladder
Each molecule of the substance unicornium can exist in either of two states; these states are different in energy by 25eV. At if one mole of unicornium is in equilibrium at room temperature, what is the fraction of atoms in the excited state? What is..
A motor having an efficiency of 88% operates a crane having an efficiency of 42%. With what constant speed does the crane lift a 410-kg crate of machine parts if the power supplied to the motor is 5.5 kW?
You are using a grating with 1000 lines per millimeter; the angle for the first order maxima is ? = 17°. Find the angle of the second order maxima
A gas is compressed at a constant pressure of 0.800 atm from 12.00 L to 3.00 L. In the process, 380 J of energy leaves the gas by heat. (a) What is the work done on the gas? J (b) What is the change in its internal energy?
consider a straight piece of copper wire of length 8 m and diameter 4.5 mm that carries a current i 7 a. there is a
A pendulum bob of mass m is attached to a massless string of length L. If the bob is released from rest at a horizontal position, What is the tangential acceleration of the bob
Four points have the same magnitude of 2.4 x 10-12 C and are fixed to the corners of a square that is 4.0 centimeter on a side. Find the magnitude of the net electric field that exists at the center of the square
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