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A converging lens forms an image that is one half the size of the object when the object is placed 80.0 cm in front of the lens. Where the object should be placed in order to produce an image that is twice the size of the object?
From street level, Superman spots Lois Lane in trouble-the evil villain, Lex Luthor, Determine how long Superman takes to reach her
A 100 mg pith ball hangs by a thread in the center of a parallel-plate capacitor. The capacitor plates are 5.0 cm x 5.0 cm, Draw a free-body-diagram of the pith ball
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
in a rectangular coordinate system a positive point charge q 8.00 nc is placed at the point x 0.250 m y 0 and an
What will be the resulting speed of the boat. A 74 kg fireman slides down a 4-m pole by applying a frictional force of 384 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches ground.
Enter question here...A 100g on object is suspended from a spring. When 40 g are added the soring stretches an additional 5.0 cm. What is the angular frequency and period of the oscillations
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2. Calculate the characteristic frequencies of such a chain is th..
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0m/s, Find the horizontal component of the average force on the ball. Take the x-direction to be positive to the right
A 0.33 kg softball has a velocity of 19 m/s at an angle of 34° below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball
A negative charge of -2.0 10-4 C and a positive charge of 9.5 10-4 C are separated by 0.24 m. What is the force between the two charges
The mirrors used in a particular type of laser are 99.99% reflecting. What is the force due to radiation pressure on one of the mirrors
A and B went to rock climbing. A and B used similar length rope but Arope is more elastic,which stretches a bit. B has static rope,which doesn't stretch,and is not recommended forsafety purpose in procliming.
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