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a 56kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake (as shown). He releases the rope when his velocity is zero.
A) draw the FBD of the student on the rope.
B) What is the angle ? when he releases the rope?
C) What is the tension in the rope just before he releases it?
D) What is the maximum tension in the rope?
A ball is thrown horizontally from a height of 16.2 m and hits the ground with a speed that is three times its initial speed. What was the initial speed?
A dentist uses a small mirror of radius 44mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 13 mm from the tooth, what is magnification of the image.
consider two solid disks of identical radius and thickness. one of the disks is made of aluminum (density=2.7g/cm), what is the ratio between the two moments of inertia
Two point charges 0.606 m apart experience a repulsive force of 0.368 N. The sum of the two charges equals 1.08 10-5 C
What percentage of the neutrons would not interact if the concrete slab were made 36.0 cm thick? I know this is 1.305x10^1. B) How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted?
After falling from rest from a height of 35 m, a 0.45 kg ball rebounds upward, reaching a height of 25 m. If the contact between ball and ground lasted 1.8 ms, illustrate what average force was exerted on the ball?
After falling from rest from a height of 28 m, a 0.46 kg ball rebounds upward, reaching a height of 18 m. If the contact between ball and ground lasted 1.7 ms, illustrate what average force was exerted on the ball?
A car is traveling at 27 m/s when the driver spots a large pothole in the road a distance 44 m ahead. She immediately applies her brakes. If her acceleration is -9.7 m/s2, does she arrange to stop before reaching the pothole.
Draw a motion diagram for the train. Assume that the train is moving toward the right and starts to slow down at t = 0. The separation of each dot represents an elapsed time of one second.
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.75 ms,
A jet of water squirts out horizontally from a hole near the bottom of the tank. If the hole has a diameter of 3.40 mm, what is the height, h, of the water level in the tank.
A neutral (uncharged) capacitor has a charge of -3.00C moved from one of the plates to the other in a time of 5.00 sec, leaving +3.00C on the 1st plate. The +charges don't move, only the electrons. What was the average current?
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