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Solve the following problem given below:
Problem: A 140-N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy associated with the child relative to her lowest position at the following times.
A. When the ropes are horizontal.
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B. When the ropes make a 26.0° angle with the vertical.
C. When the child is at the bottom of the circular arc.
When you irradiate a metal with light of wavelength 425 nm in an investigation of the photoelectric effect, Find the work function of the irradiated metal
24.0g of copper pellets are removed from a 300oC oven and immediately dropped into 110mL of water at 25.0oC in an insulated cup. What will the new water temperature be
A 44.2 kg wagon is towed up a hill inclined at 17.7 with respect to the horizontal. The tow rope is parallel to the incline and exerts a force of 154 N on the wagon. Suppose that the wagon starts from rest at the bottom of the hill, and disregard fri..
On a hot summer day, a young girl swings on a rope above the local swimming hole. what are the magnitude and direction of her velocity
The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with shuttle.
A 50.0 kilogram block is pulled from rest by a force of 1000 Newton at an angle of 37.0 degree across a horizontal rough surface over a distance of 5.60 meter. Determine what is the net work done on the block
A tennis player recieves a shot with the ball (.06 kg) travling horizontally at 50 m/s, What work does the raquet do on the ball
A pump lifts 320kg of water per hour a height of 3.5m. find the minimum necessary power output rating of the water pump
A crate of mass m1 on a frictionless inclined plane is attached to another crate of mass m2 by a massless rope. The rope passes over an ideal pulley so the mass m2 is suspended in air.
a student is standing at the edge of a rotating circular platform of mass 200kg and radius 1.1 m. the student of mass
A student standing on the ground throws a ball straight up. How long is the ball in the air before it hits the ground
A current of -3.70 A is located 5.51 cm along the x axis, that is, at the point (5.51,0.00) cm. A current of -6.15 A is located 4.08 cm along the y axis, Find the magnetic field at the origin
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