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linda pulls a sled with force 89 newtons at 30 degrees east of north. elaine pulls with 66.75 newtons at 5 degrees west of north. find the resultant force and direction.
A locomotive pulls a train along a straight, horizontal track at constant velocity. What horizontal forces act on the train and the locomotive
A hypothetical neutral atom has 93 electrons and a nucleus of mass m = 2.23e-25 kg. Calculate the speed of orbit of this electron
The intensity of a cylindrical laser beam is 0.800 {rm W}/ {rm m} ^ {2}. The cross-sectional area of the beam is 3.0 times 10^ {- 4} {rm m} ^ {2} and the intensity is uniform across the cross section of the beam.
A corner construction lot has the shape of a right triangle. If the two sides perpendicular to each other are 38m long and 40.3m long
In being launched from rest it moves through a distance of 87.00 m and has a kinetic energy of 4.5*10^7 J at lift-off. What is the work done on the jet by catapult.
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground
The block is spun at 60 rpm, then the temperature of the rod is slowly increased. When the wax melts, the block slides out to the end of the rod. Determine the final angular velocity? Give your answer in rpm.
Two balls are released simultaneously from the top of a tall building. Ball A simply dropped with no initial velocity, and Ball B is thrown downward with and initial velocity of 12 m/s. How far has each ball dropped
A disoriented physics professor drives a distance 3.25km north, then a distance 3.65km west, Find the direction of the resultant displacement, using the method of components
Calculate the gravitational force on a spacecraft 8700km above the Earth's surface if its mass is 1200kg
A 0.30 kg object is attached to a spring with force constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. Find the force on the object
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