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At the top of the loop, what is the magnitude of the force exerted on a 55kg rider by the roller-coaster seat?
At the top of the loop, what is the magnitude of the force exerted on a 55kg rider by the seatbelt?
One end of a cord is fixed and a small 0.440-kg object is attached to the other end, What is the tension of the string at this moment
An 8.5- {rm kg} point mass and a 15- {rm kg} point mass are held in place 50- {rm cm} apart. A particle of mass m is released from a point between the two masses 19- {rm cm} from the 8.5-{rm kg} mass along the line connecting two fixed masses.
The box of a well-known breakfast cereal states that one ounce of the cereal contains 128 Calories (1 food Calorie = 4186 J). what is the heaviest barbell that could be lifted a distance of 2.08 m
A block with a mass of 2.45kg is pushed up an incline plane that makes an angle of 34.2o with respect to the horizon. How much work did the frictional force do on the block
A batter hits a pitched ball when the center of the ball is 1.20 m above the ground. The ball leaves the bat at an angle of 45° with the ground. With that launch, the ball should have a horizontal range (returning to the launch level) of 107 m.
the planet venus requires 225 days to orbit the sun which has a mass m 1.99 x 1030 kg in an almost circular
If a car traveling at 66 km/h will skid 20 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
50 g of gasoline are mixed with 38 g of water. What is the average density of the mixture
A horizontal spring with force constant k = 4.80N/m connects the other end of the rod to a vertical wall. The rod is in a uniform magnetic field B = 0.310T directed into the plane.
A spring whose stiffness is 1000 N/m has a relaxed length of 0.49 m. what is the change in the potential energy of the spring
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
Assume a small child rolls off a bed that is 0.38m above the floor. If the floor is hardwood, the child's head is brought to rest in approximately 2.2mm. If the floor is carpeted, this stopping distance is increased to about 1.1cm.
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