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The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.27rad/s2. It accelerates for 31.5 s, then maintains aconstant angular velocity. Calculate the total angle through which the wheel has turned 65.5 s after it begins rotating.
A drop of water on a countertop reflects light from a flowerheld 3.1 cm directly above it. The flower's diameter is 1.7 cm, andthe diameter of the flower's image is 0.11 cm. What is the focallength of the water drop, assuming that it may be treated a..
An electric motor is plugged into a wall socket and is running at normal speed. Suddenly, some dirt prevents the shaft of the motor from turning quite rapidly. What happens to the back emf of the motor, and what happens to the current that the mot..
A golf club strikes a 0.047-kg golf ball in order to launch it from the tee. With what speed does the ball leave the club
An intense light source radiates uniformly in all directions. What is the total average power output of the source
The skis have a thrust of 200. Sam's speed at the bottom is 43.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
662 kev photons are emitted as a result of the deay of 137cs the photon undergo compton scattering. what is the minimum energy of compton scattered photon? what is the max compton electron energy?
The rms current in an RL circuit is 0.28 A when it is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 25 V. (a) Given that the inductor has an inductance of 170 mH, what is the resistance of the resistor? ? (b) Find the..
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. How long does it take for the second car to pass the first
A 175-g object is attached to a spring that has a force constant of 72.5 N/m, Find the locations of the object when its velocity is one-third of the maximum speed
In order to calculate th number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
two fire alarms are placed in a building one 3.1 m north of the other. a person sitting at a desk which is 51.2 m east
a particle with a charge of -60.0 nc is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm
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