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1. A threatening note written on 8.5x11 inch paper is pinned to the door of a physics professor. The perpetrator left in a hurry so that when the physics professor finds the paper it is still swinging. Assuming the pin is at the very top center of the paper and the paper has a mass of 4.6 grams, what is the period of the paper's motion?
A piece of iron is heated to 900?C. What is the median wavelength of its blackbody radiation
A 1.67 m tall person lifts a 2.34 kg book from the ground so it is 2.22 m above the ground. Calculate the work done by the person
A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory, What was the ball's launch angle
A narrow glass tube, open at one end, closed at the other, is 40cm long. Determine the frequency of the moving sound source
A 65 kg person sits 0.5 m from the edge of a 2 m long beam that extends fom a building. how much the tension causes the cable to stretch
A 50.0 kg skier is at the top of a slope. At the initial point at the top is 25.0 m vertically above point at the bottom. find the change in Potential energy of the skier-Earth system as the skier goes from top to bottom
An archer shoots an arrow with a velocity of 30 m/s at an angle of 20 degrees with respect to the horizontal. What is the initial speed of the apple
A sailboat leaves a harbor and sails 1.80 km in the direction 65 degrees sounth of east, the boath then sails 1.1 km in the direction 15 degrees north of east. the trip takes 15 minutes. what is the magnitude and direction.
A 7.50 nC charge is located 1.80 m from a 4.20 nC charge. (a)Find the magnitude of the electric force that one particle exerts on the other. (b) Is the force attractive or repulsive?
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.
What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 5.10 ? 105 K
A 1245-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1955-N crate hangs from the far end of the beam.
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