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A large mirror is hung from a nail. The supporting steel wire has a diameter of 0.20 mm and an unstretched length of 1.80 m. The distance between the points of support at the top of the mirror's frame is 1.40 m. The mass of the mirror is 26.0 kg. What is the distance between the nail and the top of the frame when the mirror is hung?
When these two wires are connected in equivalent to the same battery, describe the reasoning of the steps that allow you to find out which of these wires will consume the greater amount of power by warming up and dissipating this energy as heat.
a light spring whose unstretched length is 2.0 cm. You're going to use this spring to measure charge. First, you attach one end of the spring to the ceiling, What is the charge on the ball
A single-turn wire loop is 3.6cm in diameter and carries a 620mA current. Find the magnetic field strength on the loop axis, 22cm from the center
A 60.0 g copper calorimeter cup contains 200.0 g of water at 22.0 Co. How much steam must be condensed into the water
The driver of a 1250 kg car, initially traveling at 10.1 m/s, applies the brakes, bringing the car to rest in a distance of 25.0 m
A fire truck has a siren with that generates a sound with a frequency of 6686 Hz. what frequency will you observe
A football coach in hopes of improving his kicker's performance fills a .9 kg football with helium rather than air. what change in relative weight of the football (change in weight divided by weight) is to be expected
In a television picture tube, electrons strike the screen after being accelerated from rest throughout a potential difference of 28000 V.
Suppose the tension in a cord is 12.0 N. If the speed of a wave in the cord is 9.50 m/s, then what must be the linear mass density of the cord
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. Each lab group is challenged to determine the heaviest rock that can be placed in the bottom of a plastic boat without sinkin..
What is the work done by the centripetal force on an object with a mass of 2 kg moving with a constant velocity of 3 m/s
You are designing the section of a roller coaster ride, calculate the minimum radius for the semi-circular hump
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