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A firefighter with a weight of 715 N slides down a vertical pole with an acceleration of 3.10 m/s2, directed downward.
(a) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the pole on the firefighter?
(b) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the firefighter on the pole?
A simple pendulum has a period of 3.74 s. The acceleration of gravity is 9.8 m/s^2 What is its length? What would its period be on the Moon
In alpha particle with a kinetic energy of 0.51 MeV approaches a stationary gold nucleus. What is the speed of the alpha particle?
A runner of mass 51 kg runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to the earth has magnitude 3.50 m/s. The turntable is rotating in the opposite direct..
The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. what is the period of the International Space Station's orbit
A large balloon of mass 220 kg is filled with helium gas until its volume is 321 m3. Calculate the buoyant force acting on the balloon
A box of books weighing 302 N is shoved across the floor of an apartment by a force of 401 N exerted downward at an angle of 35.2o below the horizontal. how long does it take to move the box 4.00 m, starting from rest
Blocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block.
a charge of -3.00 microc is fixed at the center of a compass. two additional charges are fixed on the circle of the
A bicyclist is sitting on her bike on the side of the road when she sees her friend riding up behind her on his bike at a constant speed of 6.9 m/s. How long does it take her to catch up with him
A potter's wheel having a radius 0.53 m and a moment of inertia of 11.4 kg, determine the effective coefficient of kinetic friction between the wheel and the wet rag
A particle has a charge of q = +5.9 μC and is located atthe orgin. As the drawing shows, an electric field of E x = +233N/C exists along the x axis. A mangnetic field also exists, andIt's x and y components are Bx = +1.5 T and By = +1.3 T.
a frictionless roller coaster car of mass m tops the first hill with speed v0 at height h. How high will the car go on the last hill
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