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An airplane is flying during a thundercloud at a height of 1800 m. If a charge concentration of +60.0 C is above the plane at a height of 3000 m within the cloud and a charge concentration of -40.0 C is at height 1300 m, what is the electric field at the aircraft? (N/C) and in which direction?
A cannon fires a 7.120 kg projectile at 36.75°. If the 480.6 kg cart is pushed 12.35 meters along theground in 2.850 seconds then how fast was the projectile fired
An arrow is shot straight up from a pit 12 m below ground at 38 m/s. Find its max height above ground
Illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point B (at the top of the vertical circle)?
A 800 kg car is travelling forwards at + 25 m s?1 along a level road. What is the acceleration during skidding
a 10g block with a charge of 810-5 c is placed in an electric field e 3000i-600j nc what are the magnitude and
A horse canters away from its trainer in a straight line,moving 150 m away in 11.0 s. It then turns abruptly and gallops halfwayback in 4.5 s. Calculate its average speed.
Calculate the rate of heat conduction through house walls that are 13.0cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors.
A rectangular coil with 18 windings carries a current of 2 mA flowing in the counterclockwise direction. What torque must be applied to the loop to hold it steady
A ball of mass 10.7 g with a speed of 27.1 m/s strikes a wall at an angle 24.0o and then rebounds with the same speed and angle. calculate the average force exerted by the ball on the wall
In 0.675 s, a 6.80-kg block is pulled through a distance of 4.10 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
The lowest note on a grand piano has a frequency of 27.5 . The entire string is 2.00 long and has a mass of 430 . The vibrating section of the string is 1.88 long. Part A What tension is needed to tune this string properly?
Describe its motion. (Will it slide forever at a constant velocity? Will it slide to a stop? Illustrate in what way will its energy changes be similar to that of a pendulum?)
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