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Superman throws a boulder of weight 2400N at an adversary. What horizontal force must Superman apply to the boulder to give it a horizontal acceleration of 14.4m/s^2 ?
A 12.5-kg horizontal plank 4.00 m long rests on two supports, one at the left end and a second 1.00 m from the right end
question1a professors office door is 0.92 rm m wide 2.0 rm m high 4.0 rm cm broad has a mass of 25 rm kg and pivots on
A 50 kg child takes a ride on a roller coast . the coaster maintains a constant speed of15 m/s as it moves around a loop of radius 10m. what is the centrupetal acceleration of the child
A 0.70-kg mass attached to a vertical spring of force constant 140N/m oscillates with a maximum speed of 0.40m/s, Find the maximum magnitude of the acceleration
A soccer ball is kicked with an initial horizontal velocity of 16.0 m/s and an initial vertical velocity of 18.0 m/s. How far from where it was kicked will the ball land
An LRC series circuit with R= 150 ohms, L= 25 mH and C= 2 mF is powered by an AC voltage source of peak voltage Vo= 340 V, Determine the peak current that flows in this circuit
A speedboat increases its speed uniformly from 20 m/s to 30 m/s in a distance of 200m. Find (a) the magnitude of its acceleration and (b) the time it takes the boat to travel the 200-m distance.
If a hot air balloon floats at a constant elevation (it has reached equilibrium) where the local atmospheric pressure is 98 kPa (abs) and outside air temperature is 285 K, and the hot air inside the balloon is at 400 K
Calculate the mass of Earth from the period of the moon, T = 27.3 d; its mean orbital radius, rm = 3.84 108 m; and the known value of G
A military helicopter on a training mission is flying horizontally at a speed of 90.0m/s when it accidentally drops a bomb, How much time is required for the bomb to reach the earth
A thin rectangular plate of uniform areal density ? = 2.84 kg/m2 has length of 35.0 cm and width of 21.0 cm. Calculate the mass of plate
Mars has a small moon, Phobos, that orbits with a period of 7 h 39 min. What is the mass of Mars
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