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Astronauts on the moon set up a simple pendulum of the length 1 m and measured it's period to be 4.93 s. What is the acceleration due to gravity on the moon?
Under an outdoor area "yellow" (Na lamp) light, a fiber is placed between but at the edger of two 3 cm glass slides. how thick is the fiber
Two metal electrodes of size 2.0 cm \times 2.0 cm are spaced 1.3 mm apart and connected by wires to the terminals of a 9.0 {\rm V} battery. What is the charge on each electrode? What is the potential difference between electrodes?
a tire is filled with air at 22oc to a gauge pressure of 240 kpa. after driving for some time if the temperature of air
Why is the normal force of an object zero at the top of a hill (such as the hill of a roller coaster)? I'm doing a circular motion unit and I found a few problems where this is the case, and I was wondering how it works.
Find out the maximum distance d (along the ladder) that the monkey can climb up ladder before the rope breaks.
A 234.0 g piece of lead is heated to 86.0oC and then dropped into a calorimeter containing 611.0 g of water that initally is at 24.0oC. find the final equilibrium temperature (in oC) of the lead and water
two speakers one directly behind the other are each generating a 522-hz sound wave. what is the smallest separation
A 655-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. Find the satellite's orbital speed
An automobile tire has a radius of 0.325 m, and its center moves forward with a linear speed of v = 24.8 m/s. Determine the angular speed of the wheel
A cart is placed on an inclined plane (a wooden board which is seton an angle) and attached to a pulley by a rope at the end of thewooden board. On the other side of the rope, hanging below theinclined plane is a weight.
radio waves travel at the speed of light which is 3x108 ms. how many minutes does it take for a radio message to reach
question1a 52 kg mountain climber starting from rest climbs a vertical space of 730 m. at the top she is again at rest.
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