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A converging lens of focal length 40 cm and a diverging lens of focal length 40 cm are 160 cm apart. A 2 cm tall object is 60 cm in front of the converging lens. Estimate the final image height and position.
What is the final temperature of the heating element
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
If you lift the front wheel of a poorly maintained bicycle off the ground, If the moment of inertia of the wheel about its axle is 0.30 , what is the magnitude of the frictional torque
A golf ball with mass 45.90 g and diameter 42.60 mm is struck such that it is moving with a speed of 51.93 m/s, What is the kinetic energy of the golf ball
a particle moves according to the equation x 8t2 where x is in meters and t is in seconds. a find the average velocity
Two charges repel each other with a force of 10-6 Nwhen they are 10 cm apart. Find the forces between the samecharges when they are 2 cm and 20 cm apart
A 5 kg ball is dropped and hits the ground with a velocity of 14 m/s. using the law of conservation of energy, what height was it dropped from
A 2.26 kg block is on a plane inclined at 22.4 degrees with respect to the horizontal. How many forces are acting on the block
A piece of a cloth is found to contain 15% of the C-14 present in a similar material today. How old is this cloth
a 118.0-kg block is on a horizontal frictionless surface on top of it is a second smaller block of 75.0-kg. a
A steel beam 10m long is installed in a structure at 15?C, What is the beam's change in length when the temperature reaches 50?C
A wire streches from the top of a vertical pole to a point on level ground 16 feet from the base of the pole. if the wire makes an angle of 62 degrees withe the ground, find the height of the pole and length of the wire.
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