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a 015 kg ball hits a wall with a velocity of 400 ms 650 ms 500 ms it rebounds from the wall with a velocity of 200
two horses are pulling a barge with mass 187 103 kg along a canal as shown in the figure the cable connected to the
a 70 ohm lamp and a 75 ohm lamp are connected in series and placed across a potential of 41 v what is the voltage drop
a 10-kg picture is held in place by two wires the first hanging at 350deg to the left of the vertical and the second at
a 50-kg person steps on a scale in an elevator that is moving upward the scale reads 5125 n what is the magnitude in
an astronaut weighs 85 n on the moon where the acceleration of gravity is 162 ms2 how much in n does she weigh on
a 50-kg crate is being pulled along a horizontal smooth surface the pulling force is 100 n and is directed 300deg above
a 70 ohm lamp and a 75 ohm lamp are connected in series and placed across a potential of 41 v what is the equivalent
an athlete catches a ball traveling at 20 ms with her hands between the time she makes contact with the ball and the
a certain projectile is launched with an initial speed v0 at its highest point its speed is v06 what was the launch
a mining cart is pulled up a hill at 20 kmh and then pulled back down the hill at 33 kmh through its original level the
a gas occupying a volume of 725ml at a pressure of 0970 atm is allowed to expand at a constant temperature until its
a 274 kg block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force of
methanol ch3oh is an efficient fuel with a high octane rating combustion of methanol occurs by the reactionch3oh g 32
a planet with a radius of 600 x 107 m has a gravitational field of magnitude 300 ms2 at the surface what is the escape
by landing properly and on soft ground and by being lucky humans have survived falls from airplanes when for example a
a sample of gas composed of 57 grams of carbon dioxide and 36 grams of neon in a container with volume 57l and temp 67
calculate the temp of an argon sample at 554 kpa and 186l if it occupies 258 l at 75 degrees c and mass of
you are on the moon and would like to send a probe into space so that it does not fall back to the surface of the moon
a sample ofnitrogen gas at 298 k and 745 torr has a volume of 3742 l what volume will it occupy if the pressure is
a 40 kg particle starts from rest at x 0 and moves under the influence of a single force fx 6 4x - 3x2 where fx is
bowling balls can be made from a variety of substances and are required to have a circumference of roughly 276 inches
a flask containig helium gas is connected to an open ended mercury manometer the open end is exposed to the atmosphere
a 0359-kg mass is attached to a horizontal spring with k 108 nm the mass slides across a frictionless surface the
vinegar is a solution of acetic acid dissolved in water a 554 g sample of vinegar was neutralized by 3010ml of 100 m