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A football player pushes a 380 kg tackling sled with a force of 750 N. If the resulting acceleration of the sled is 1.5 m/s2, what is the magnitude of the dynamic friction force opposing the motion of the sled? what is the coefficient of dynamic friction between the sled and the ground?
plz show all work and formulas
neglect air resistance for the following. a soccer ball is kicked from the ground into the air. when the ball is at a
Many star are observed to have rotation periods that lengthenslightly with time, a phenomenon called "spin down." The rate ofslowing of the Crab Star is 3.50*10-13 s per second, which implies that if thisrate remains constant, the Crab Comet will s..
A pendulum with a length of precisely 1.000 m can be used to measure the acceleration due to gravity g. Such a device is called a gravimeter. How long do 183 oscillations take at sea level
A metal surface is susceptible to a photoelectric threshold frequency of 8.529 x 10 Hertz. compute what the speed of the fastest electron ejected
Europa, one of the moons of Jupiter, was discovered by Galileo in 1610. Europa has a circular orbit of radius 6.708 105 km and period 3.551 days. Find the mass of Jupiter
q1. determine the tension in each cable if boat has a mass of 490 kg and the angle of each cable is 50 degrees from the
On its highest power setting, a microwave oven increases the temperature of 0.380 kg of spaghetti by 45.0°C in 130 s. What was the rate of power absorption by the spaghetti
A spherical mirror is to be used to form ona screen 5.00m from the object, an image five times the size of the object. Describe the type of mirror required.
A wire of diameter 0.850 mm and length 50.0 m has a measured resistance of 2.80 ?. What is the resistivity of the wire
A pump flows 100 gal/min of water. The inlet pressure is 0 psig and the outlet pressure is 20 pisg. How much electricity (kW) is required to power the motor
where x, y1, and y2 are in centimeters and t is in seconds. Determine the maximum transverse position of an element of the medium at the following positions
A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration
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