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A meter stick is balanced horizontally on a pivot attached at the 50-cm mark. A 300-gram mass is attached to the right half of the meter stick 30 cm from the pivot point and it swings down. You wish to rebalance the meter stick horizontally with a 450-gram mass. Where on the meter stick must you attach the 450-gram mass to achieve this?
Find the critical angle for an optical fiber whose core has n value of 1.50 and whose cladding has n value of 1.15
A simple circuit consists of a battery connected to a lightbulb. A current of 0.243 A runs for 64.5 min, What is the voltage of the battery
A generator supplies 120 V to a transformer's primary coil, which has 44 turns. If the secondary coil has 490 turns what is the secondary voltage
They are 15.0 m above a fire-fighters safety net. When landing jumper stretches the net 1.0 m before coming to rest. A. what was the average acceleration experienced by the jumper when slowed to rest by the net? B. Is this acceleration positive or ne..
An object of mass 2.1 kg is moving in the negative x direction at a velocity of 2.6 m/s. What is the final velocity after the object has experienced the impulse
A 0.12kg rubber ball is dropped from a height of 1.0m above the floor and it bounces back to a height of 0.80m, How much energy is lost
q1. two boats start together and race across a 46 km-wide lake and back. boat a goes across at 60 kmh and returns at 60
A sledge loaded with bricks has a total mass of 17.1 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. how much work is the roping doing on the sledge
You connect five identical resistors in series to a battery whose EMF is 12.0 V and whose internal resistance is negligible. What are the resistance of each resistor and the potential difference across each resistor
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
A 1590 kg satellite orbits the Earth at an altitude of 50.4 km. It is desired to increase the altitude of the orbit to 298 km, How much energy must be added to the system to effect this change in alti- tude
calculate the speed of sound and uncertainty of the speed of sound for a lab report. The equation for the speed of sound is V=4LS
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