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A hockey player got checked into the boards and was knocked unconscious. It takes 95N of force to drag the hockey player across the ice at a constant speed. If the coefficient of friction between the player and ice is .35, how much does the player weigh in Newton's?
A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building.
A mass of 1.62 kg stretches a vertical spring 0.328 m. If the spring is stretched an additional 0.136 m and released, how long does it take to reach the (new) equilibrium position again.
For the situation, the magnetic field changes with time according to the expression B = (2.00t3 - 4.00t2 + 0.800)T, and r2 = 2R = 5.00 cm. (a) Calculate the magnitude and direction of the force exerted on an electron located at point P2 when t = 2.00..
A snowmobile climbs a hill at velocity v-up. The slope of the hill is a 2 ft rise for every 70 ft of distance. The resistive force of the snow is equal to 4.12 percent of the weight of the snowmobile. How fast will the snowmobile move downhill, assum..
An electron is released a short distance above Earth's surface, the first electron just great enough to cancel the gravitational force on it, How far below the first electron is the second
Two people are holding up the ends of a 4.75-kg wooden board that is l = 2.00 m long. A m = 3.00-kg box sits on the board, 0.50 m from one end. What forces do the two people exert.
What is the resultant velocity of the motor boat. What distance downstream does the boat reach opposite shore.
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.89 × 102 kW, calculate the corresponding sound intensity level
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
A faulty model rocket moves in the xy-plane (the positive y-direction is vertically upward), What is the horizontal displacement of the rocket when it returns to y=0
Two balls, of masses = 60 and = 70, are suspended. The lighter ball is pulled away to a 67 angle with the vertical and released. Suppose that the positive axis is directed to the right.
There are two pith balls that are suspended from a pendulum and repel each other, calculate the tension of the string and the mass of the balls
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