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Charges of 6.0 X 10^-7 C are each located at three corners of a square that is 1.0 m on each side. A charge of -1.3 x 10^-6 C is located at the other corner. What is the electric field at the center of the square (magnitude and direction)? What is the electric potential at the center of the square? Please show your work.
What is the size of the frictional force acting on the car
What is the speed of the projectile
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
include a free body diagram. Be sure to label all forces with their agents and size. 1. A 5.0kg cat running along suddenly braces his furry feet on the slippery floot in order to stop.
A 0.246-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%, What is the average current supplied to the car\'s motor?
A piston, A, has a diameter of 0.74cm. A second piston, B, has a diameter of 2.6 cm. In the absence of friction, determine the force, F, essential to support the 539.7 N weights. Answer in units of N.
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 348 K is heated at constant volume to 696 K, What is the efficiency of the cycle
1.collect 10 resources other than your textbook from popular science magazines including discover scientific american
A nearsighted person cannot read a sign that is more than 6.0 m from his eyes. What is the focal length of the contacts?
A figure skater is spinning with an angular velocity of +14 rad/s. She then comes to a stop over a brief period of time. Determine the time during which she comes to rest
Two events in reference frame S occur 10?s apart at the same point in space. The distance between the two events is 2400 m in reference frame S?, What is the time interval between the events in reference frame S? ?
A 54.2 g block of copper whose temperature is 400 K is placed in an insulating box with a 120 g block of lead whose temperature is 200 K. What is the change in the entropy of the system
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