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A gardener pushes a box of tools across a driveway by applying a 22.5- N force that pushes downward at an angle of 23.1 o with respect to the horizontal. How much work is done if the box moves 2.55 m in the horizontal direction?
Two charged objects experience a mutual repulsive force of N. If the charge of one of the objects is reduced by a factor of and the distance separating the objects is increased by a factor of , what is the new force?
Three forces are applied to an object. Force F1 has a magnitude of 20.3 newtons (20.3 N) and is directed 30.0° to the left of the +y axis.
What is the wavelength of emitted photon of the previous question if k = 10eV/ °A2, where °A denotes Angstrom and eV: electron volt. Is the emitted photon in visible spectrum of a human eye.
What is the magnitude of the electric field. A 50-gram super ball traveling at 25m/s is bounced off a brick wall and rebounds at 22 m/s. A high speed camera records this event. If the ball is in contact with wall for 3.5 ms, what is the average acc..
Determine how long it would take an astronaut to fall from a height of 2 meters on the Moon. Compare this time to the time it would take the astronaut to fall the same 2 meters on the Earth. Also, compare the time to the time it would take on the ..
Gayle runs at a speed of 4m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5m, her brother.
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
a) Write an expression for the magnitude of the force, F, that propels the dragster forward in terms of the variables provided. b) If the track has length L, select the correct symbolic equation for how fast Vf the dragster is traveling when it fi..
A rock of mass 34 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 248 N. Elucidate what is the magnitude of the acceleration of the rock?
Find out the magnetic force on the rod
A point source of light is 200 cm below the surface of a body of water. Find out the diameter of the circle at the surface through which light emerges from the water.
A paperweight, when weighed in air, has a weight of W = 7.4N. When completely immersed in water, though, it has a weight of Win water = 4.40 N. Find the volume of the paperweight.
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