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A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at xr=0 and the green is at xg=220m. If the red car has a constant velocity of +20km/h, the cars pass each other at x=44.0 m,and if it has a constant velocity of +40km/h, they pass each other at x=77.0m.
what is the initial velocity of the green car?m/s
what is the acceleration of the green car?m/s^2
An 88 kg spacewalking astronaut pushes off a 640kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms.
Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plates is 2227 N/C. What is the magnitude of the new electric field
suppose you adjust your garden hose nozzle for a hard stream of water. you point the nozzle vertically upward at a
A particle of mass m slides down an inclined plane under the influence of gravity. A) If the motion is resisted by a force f = kmv, find the distance d down the incline to come to rest with the initial speed was Vo and Theta is the inclination of the..
Three charges, +q, +2q, and +4q, are linked by strings (Assume that the middle charge is fixed in space and the other 2 charges are held there by the tension alone.)
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. If the vehicle has a speed of 20.5 m/s at point , what is the force exerted by the track on the car at this point
The Kitty Hawk was the first balloon to traverse the North American continent. It was filled with 200,000 cubic feet of helium for its sea level take-off on a 10 deg C evening at Fort Baker, California, May 7, 1980. Calculate the mass and weight o..
Equilibrium a meter stick has only two forces acting on it, of equal sizes at the ends that are in opposite directions. (I have magically turned gravity off.) Is the stick in equilibrium? Describe your answer.
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. In which collision is the impulse on the cart greater
Monochromatic light (λ = 570 nm) passes during two slits and onto a screen 4.0 m away. If two nearby bright fringes are separated by 14 mm, what is the slit spacing?
In the system shown in the figure, suppose the block has a mass of 3.3 , the spring has a force constant of 450 , and the coefficient of kinetic friction between the block and the floor is 0.19. Find the work done on the block by the spring
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