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Question: What size electric field would you have to apply to the above particle in order to exactly counteract the force of gravity? What would be the direction of this field?
In a slide or movie projector, the film acts as the object whose image is projected on a screen. how wide will the picture be on the screen
An airtight box having a lid with an area of 14.0in2 ( 90.32cm2 ) is partially evacuated. what is the air pressure in the box
In a friendly game of handball, you hit the ball essentially at ground level and send it toward a wall that is 24 m away with a speed of 40 m/s and at an angle of 40° above the horizontal. How high is the ball when it hits the wall
A cameraman on a pickup truck is traveling westward at 24 km/h while he videotapes a cheetah that is moving westward 25 km/h faster than the truck. Abruptly, the cheetah stops, turns, and then run at 42 km/h eastward, as gauged by a suddenly nervous ..
a block of mass 0.222 kg is placed on the end of a spring which has a stiffness of 150. nm. it is pulled down 2.60 cm
A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.1 m/s. If the birds can fly at 7.5 m/s relative to the air, find in what direction should they head
A system has a heat source supplying heat at a rate of 187 W and is doing work at a rate of 130.899998 W. At what rate is the internal energy of the system changing.
A bullet is fired vertically into a 2 kilogram block of wood at rest directly above it. determine how high will the block rise after the bullet becomes embedded in it
A 20 kg box is pushed a crossed the floor. Starting from rest, the speed of the box after 5 seconds is 1.6 m/s. What net force acts on the box
A series RCL circuit operating at 60.0 Hz contains a 49-? resistor and an 5.0-µF capacitor. what is the inductance of the inductor in this circuit
A 75.0 weight watcher wishes to climb a mountain to work off the equivalent of a larger piece of chocolate cake rated 500(food)calories . how high must the person climb
The velocity of a diver just before hitting the water is -11.9 m/s, where the minus sign indicates that him motion is directly downward. Find him displacement during the last 1.12 s of the dive
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