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A. A car that weighs 13800.0 N is initially moving at a speed of 42.0 km/hr when the brakes are applied and the car is brought to a stop in 2.4 s. Find the magnitude of the force that stops the car, assuming it is constant.
B. What distance does the car move during this time?
A 6 kg box is held at rest by two ropes that form a 30 degree angle with the vertical. and external for F acts vertically downward on the box.
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
Illustrate what is the intensity of the beam transmitted through the three sheets when 1 = 19.0°, 2 = 51.0° and 3 = 100.0° ?
A flywheel with a diameter of 0.877 m is rotating at an angular speed of 146 rev/min. What is the angular speed of the flywheel in radians per second
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
Two horses pull a large crate of negligible mass at constant speed across a barn floor by means of two light steel cables. What is the work done by each horse if the box is moved a distance of 30 m
A glider of mass 1.00 kg is allowed to oscillate under the influence of a spring of spring constant 25.6 N/m while on a frictionless, horizontal air track. At t = 0 s glider is released from rest at x = 5.00 cm. (At equilibrium, the glider is at x = ..
A rocket ship at rest in space gives a short blast of its engine, firing 90 kg of exhaust gas out the back end with an average velocity of 700 m/s.
A 6.00?kg ball is dropped from a height of 13.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg and is 6.80m in length. How high will the other ball go after the collision
A solenoid is made of N=2500 turns, has a length L=10cm, and a radius R=0.5cm. What is the current through the wires of the solenoid
irplane A , starting from rest with constant acceleration, requires a runway 600m long to become airborne. How long must the runway be for airplane B
You are driving to grocery store at 21. You are 100 from an intersection when the traffic light turns red. Presume that your reaction time is 0.75 and that your car brakes with constant acceleration. How far from the intersection are you when you ..
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