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Starting from rest several toy cars roll down ramps with differing lengths and angles. Rank them by their speed to the bottom ofthe ramp from the slowest to fastest. Car A goes down a 10 mramp inclined at 15 degrees, car B goes down a 10 m ramp inclinedat 20 degrees and car D goes down a 12 m ramp inclined at 12degrees.
A blue car with mass mc = 547 kg is moving east with a speed of vc = 19 m/s and collides with a purple truck with mass mt = 1327 kg that is moving south with an unknown speed. FIND the magnitude of the initial momentum of the truck
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 485 newtons and is directed due west.
A force applied to an object of mass m1 produces an acceleration of 3.60 m/s2. find its acceleration under the action of the force
A planet orbits a star, in a year of length 2.49 x 107 s, in a nearly circular orbit of radius 2.39 x 1011 m. With respect to the star, evaluate the angular speed of the planet
Capacitors won't hold a charge indefinitely; as time goes on, charge gradually migrates from the positive to the negative plate. What is the leakage resistance
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. find the area of contact between each tire and the ground
What is the value of a current in the smaller loop that would result in zero total magnetic fields at the center of the two loop system.
Coherent light with wavelength 609nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3- {rm m} from the slits. The first-order bright fringe is a distance of 4.84 {rm mm} from the center of ..
A Carnot air conditioner maintains the temperature in a house at 294 K on a day when the temperature outside is 308 K
Mechanical Advantage The pulley system shown in the figure is used to lift a 52- crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume the masses of the chains, pulley..
q1. a cylinderical water tank of radius 10ft and height 30ft is half filled with water. how much work is essential to
As a positron moves through a region of space, its speed increases from 2.80 X10^6 m/s to 8.00 X10^6 m/s. The electric force is the only force acting on the positron. Across what potential difference did the positron travel?
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