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A car is 200 m from a stop sign and traveling toward the sign at 40 m/s. If the driver realizes they must stop the car at this time. It takes 0.20 s for the driver to apply the brakes. What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign.
What is least amount of work required by an external force
What is the average induced emf in the coil in mV. If he is crossing a river where the current is 1.60 km/h, in what direction should his boat be headed if he wants to reach the point directly opposite his starting point.
A cell membrane is composed of lipid molecules and approximately 10.48 nm thick. If the dielectric constant of the lipid is k = 5, what is the approximate capacitance of a spherical cell that has a diameter of 10.48 mu m?
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
A plane is flying southwest at 155 mi/h and encounters the wind from the west at 45mi/h? what is the planes new velocity with respect to the ground in standard position.
Compute coefficient of kinetic friction
If each rock strikes the fixture travelling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, how high above the lowest point does collision make your light fixture swing?
What is the magnitude of the electric field at this point?
A 67.3 kg sled starts at rest on a horizontal road. The coefficient of kinetic friction between the sled and the road is μk = 0.202. A man pulls the sled a distance 5.07 m along the ground by exerting a constant force of magnitude 532 N on a rope tha..
A 106 m long train begins uniform acceleration from rest. The front of the train has a speed of 23 m/s when it passes a railway worker who is standing 230 m from where the front of train started. What will be the speed of last car as it passes the..
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
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