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Two identical small insulating balls are suspended by separate 0.256 m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.09E-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and, as a result, spread apart with an angle of 33.0 ° between the threads. Determine the charge on each ball.
Your medieval history class is constructing a trebuchet, a catapult-like weapon for hurling stones at enemy castles, Find an expression for the angle that will maximize the range of a projectile launched with speed from height above level ground
Establish steady-state electric field inside Nichrome wire
At the equilibrium position, the piston is situated at the hight l0 from the bottom of the cylinder. The pressure outside of the cylinder is P0, the cross section of the cylinder and the piston is S.
A transformer with 1710 turns on the primary and 229 turns on the secondary is used in an electric slot car racing set to reduce the input voltage amplitude of 170 V from the wall output
Two identical guitar strings are prepared such that they have the same length (2.17 m) and are under the same amount of tension. find the wave propagation speed on the guitar strings
The statue of Isaac Newton is crated and moved from the Oxford Museum of Natural History and Science for cleaning. find the normal force between the ramp and the crate
Travelling at a speed of 17.10 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.740. What is the speed of the automobile after 1.81 s have el..
A cannonball, mass 50 kg, is shot out of cannon at an angle of 75 degrees with respect to the horizontal. The initial speed is 10 m/s. the ball lands at the same height from which it began.
An electron is initially at rest just outside a large copper surface that has the charge density of 1.20 x10-6 C/m2. How far has the electron moved in 1.07 x10-9 s if the field is uniform over this region.
State clearly the difference (a) between electric potential and electric field, (b) between electric potential and electric potential energy.
The electric field on the axis of a uniformly charged ring has magnitude 400 kN/C at a point 6.4cm from the ring center. Find the ring's radius
A 110 ball and a 250 ball are related by a 38--long, massless, rigid rod. The balls rotate about their center of mass at 150 what is the speed of the 110 ball.
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