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In an amusement park ride, cars are suspended from L = 4.21 m cables attached to rotating arms at a distance of D = 6.28 m from the axis of rotation. The cables swing out at an angle of = 46° when the ride is operating. What is the angular speed of rotation?
In proton-beam therapy, a high-energy beam of protons is fired at a tumor, What is the total charge of the protons that must be fired at the tumor to deposit the required energy
Assume that Newton's law of universal gravitation can be applied to these two students and find the gravitational force (in Newtons) that one student exerts on the other when they are separated by 0.493 m. Consider entering the answer using scient..
A crying baby emits sound with an intensity of 8 × 10-8 W/m2. What is the intensity level for a set of twins? The lowest detectable intensity is 10-12 W/m2
Two equal masses collide in space away from any gravitational object. Mass A is moving in a straight line at 45 m/s, Find the speeds of the two masses after the collision
A brick of mass 1.05 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.46 m. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can ha..
A golf ball strikes a hard, smooth floor at an angle of 37.5 ° and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. How many kilograms of nitrogen are boiled away in a period of 5.00 h
A rock is thrown vertically upward with a speed of 11.0 from the roof of a building that is 40.0 above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground?
An oil droplet(missing 3 electrons) is hovering inside some parallel plates that are separated by 3.0mm. what is the mass of the oil droplet
A man can row a boat at a speed of 7.45 km/h in still water. If he is crossing a river where the current is 2.00 km/h, find what direction should his boat be headed
A 5.0 megawatt windmill has three 45 m-long blades that can be approximately viewed as straight rods. If the rotational speed of the rods is 6 rpm, what is the mass of each rod
A direction that causes the rod to rotate on the axle
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