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A driver in a moving car applies the brakes. The car slows to a final speed of 1.80 m/s over a distance of 40.0 m and a time interval of 8.30 s. The acceleration while braking is approximately constant.
What is the car's original speed before braking?
What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.)
Explain how Teflon becomes negatively charged when rubbed against Glass and the resulting charge on the Glass. (Hint: Use the triboelectric series above.)
how does the energy stored in a capacitor change if each of the following happens? a the potential difference is
A triangular prism of mass M, whose two ends are equilateral triangles parallel to the xy plane with side 2a, is centered on the origin with its axis along the z axis. Find its moment of inertia for rotation about the z axis. Without doing any int..
Lasers have been used to suspend spherical glass beads in the Earth's gravitational field. What is the minimum power required for this laser
capacitors wont hold a charge indefinitely as time goes on charge gradually migrates from the positive to the negative
A long cylindrical copper wire of radius 0.20 cm is surrounded by a cylindrical sheath of rubber of inner radius 0.20 cm and outer radius 0.30 cm. What will be the electric field just outside the rubber sheath
A metal ball with a mass of 2.97·10-6 kg and a charge of +4.91 mC has a kinetic energy of 6.81·108 J. how close will it come to the plane before stopping
A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 14 cm. If the object is moved to a position 17 cm to the left of the lens,
an alumanum disk is held between the poles of a power magnet and then pulled out. the person pulling on the disk feels
a ball is thrown vertically upward with a speed of 15.0 ms. a how high does it rise? b how long does it take to reach
It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, Find the minimum speed of a lead bullet for such an event to happen
A Carnot engine operates with a cold reservoir temperature of 194 K and has an efficiency of 74.3%. What is the temperature of the hot reservoir
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