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A picture of width 45.0 cm, weighing 50.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 3.40 cm higher than the points where the wire is attached to the frame. Find the tension in the wire.
Two students are on a balcony a distance h above the street. One student throws a ball vertically downward at a speed v1; at the same time, the other student throws a ball vertically upward at the same speed.
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 455 Hz. Determine the ambulance's speed from these observations.
A 3.0 g aluminum foil ball with a charge of +4.0A x 10-9C is suspended on a string in a uniform horizontal E? If the string is cut, how long will it take the ball to fall to the floor 2.7 m below the level of the ball?
A dead battery is charged by connecting it to the live battery of another car with jumper cables. Determine the current in the dead battery
a cd has a mass of 16.4 g and a radius of 6.12 cm. when inserted into a player the cd starts from rest and accelerates
An iron vat is 13 m long at room temperature
A sheet of glass is coated with a 500nm thick layer of oil ( n = 1.42). What is the color of the most part of transmitted light
An astronaut is tethered by a strong cable to a spacecraft. The astronaut and her spacesuit have a total mass of 104 , while the mass of the cable is negligible. What force does the cable exert on the astronaut
a lamp in a childs halloween costume flashes based on an rc discharge of a capacitor through its resistance. the
1ml of distilled water is injected into a length of 3mm diametre tubing and sealed at the other end by folding over, Why doesn't water drain out when the tube is hung vertically
A uniform diving board is 5.00 meters in length and weighs 100 Newtons. It is supported by two posts separated by 1.50m. What are the force exerted on the posts
A 12-kg block (M) is released from rest on a frictionless incline that makes an angle of 28 degrees. How far does the block move down the incline from its rest position to the stopping point
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