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A rapidly spinning paddle wheel raises the temperature of 200mL of water from 21 degrees Celsius to 25 degrees. How much a) work is done and b) heat is transferred in this process?
A 620g object traveling at 2.1m/s collides head-on with a 320g object traveling in the opposite direction at 3.8m/s. what is the change in the kinetic energy of the 620g object
A woman holds a tube of lipstick 7.5 cm from a spherical mirror and notices that the image of the tube is inverted, Calculate the focal length of the mirror
Some mass spectrometers use an electric field to give the incoming ions a certain known kinetic energy as they enter the magnetic field. What is the final kinetic energy of the ion just before it reaches the ion detector
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 387 m/s and emerges with a speed of 163 m/s, what is its acceleration as it passes through the boar..
What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 375nm
An oscillatory water wave has a period of 2.56 seconds and a wavelength of 7.12 cm. What is the angular frequence
A tiny 0.0250 -microgram oil drop containing 15 excess electrons is suspended between to horizontally closely-spaced metal plates, Which plate must be positive, the upper one or the lower one
A 2.00 m tall basketball player wants to make a goal from 10.0 m from the basket. If he shoots the ball at a 45.0° angle, at what initial speed should he throw the basketball so that it goes through the hoop without striking the backboard.
A skier of mass 68.4 kg glides down a hill of slope 26.5 degree at constant speed. find the coefficient of friction between her skis and the slope
a 2.0kg ball traveling at 2.0m/s collides head on with a 1kg ball intially at rest. Fraction of initial kinetic energy lost during the collision
A transformer has 590 primary and 170 secondary turns. An alternating potential of 90 V is applied to the primary
find out where the coyote lands in the canyon.
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