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An electric vehicle starts from rest and accelerates at a rate of 2.4 m/s2 in a straight line until it reaches a speed of 14 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops.
(a) How much time elapses from start to stop?
_____ s
(b) How far does the vehicle travel from start to stop?
_______- m
A 1.3-µF capacitor is connected to a 4.7-V battery. What is the magnitude of the charge on each plate?
A 1260kg car pushes a 2180kg truck that has a dead battery. When the driver steps on the accelerator, find the magnitude of the force the truck applies to the car
Here's the question: If you have two metal plates 0.50cm apart, and you drop a bit of liquid (mass of 2.6 x 10^-12 g), How many electrons appear on the drop
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
An Earth satellite has a speed of 28100 km/hr when it is at its perigee, 281 km above Earth's surface. Find the apogee distance
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s. What is the speed in the second segment
The sound level measured in the room by a person watching a movie in a home theatre system varies from 63 dB throughout a quiet part to 92 dB throughout a loud part. In the order of how many times louder is the latter sound.
An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0 degrees Celsius, How much heat |Q_H| is rejected to the room
A long solenoid has 80 turns/cm and carries current i. An electron moves within the solenoid in the circle of radius 3.10 cm perpendicular to the solenoid axis. The speed of an electron is 0.0330c (c = speed of light). Find current i.
1.76- block at rest on a ramp of height. While the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 12.0 that has a coefficient of kine..
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
A camera has a lens with a focal length of 29.4 cm. When an object is placed 3.95 meters away is being photographed, how far from the film should the lens be placed
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