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You measure an electric field of 1.35×106N/C at a distance of 0.141m from a point charge. There is no other source of electric field in the region other than this point charge. What is the electric flux through the surface of a sphere that has this charge at its center and that has radius 0.141m ? What is the magnitude of the charge?
The coefficient of kinetic friction between block and ramp
At a waterpark, sleds with riders are sent along a slippery,horizontal surface by release of a large, compressed spring.The spring with a force constant k= 3700 N/m and negligible mass rests on the frictionless horizontal surface.
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 50.6 m when its initial speed is 79..
A woman walks 300m in the direction 30° east of north, then 300 m directly east.
The speed of a bullet as it travels down the barrel of a rifle toward the opening is given by v = (-5.30 107) t 2 + (3.15 105) t, where v is in meters per second and t is in seconds.
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
A projectile is fired straight upward at 141 m/a. how fast is it moving at the instant it reaches the top of its trajectory? Assume in its place that it was fired upward at 45. What would be its speed at the top of its trajectory.
A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..
Find the horizontal component of the force exerted on the rod by the hinge and Find the vertical component of the force exerted on the rod by the hinge.
The force of repulsion that two like charges exert on each other is 4.0 N. What will the force be if the distance between the charges is increased to 6 times its original value.
A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to th..
A car starts from rest and travels for 10s with a uniform acceleration of +2.4 m/s2. The driver then applies the brakes, causing a uniform negative acceleration of -2.0 m/s2.
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