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Two 0.78-m-long conducting rods are rotating at the same speed in opposite directions, and both are perpendicular to a 4.0-T magnetic field. As the drawing shows, the ends of these rods come to within1.0 mm of each other as they rotate. Furthermore, the fixed ends about which the rods are rotating are connected with a wire, so these ends are at the similar electric potential. If a potential difference of5.6 x 103 V is required to reason a 1.0-mm spark in air, what is the angular speed (in rad/s) of the rods when a spark jumps across the gap?
A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. How many beats does the student hear per second
A simple harmonic oscillator with m = 0.740kg and total energy E = 125J has amplitude 1.65m, Find the maximum acceleration
A child in a boat throws a 5.15-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest
A converging lens with a focal length of 12.9 cm and a diverging lens are placed 25.5 cm apart, with the converging lens on the left. What is the focal length of the diverging lens
Particle A carries a charge of 5.0 uC, Particle B is 12.0cm, Find the magnitude and direction of the electric force on A due to B
An alpha particle with a kinetic energy of 6.00MeV makes a head-on collision with a gold nucleus at rest. What is the distance of closest approach of the two particles
A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8mm, A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8m
Steam at 100 degrees C is added to ice at 0 degrees C. Find the amount of ice melted and the final temperature when the mass of steam is 13 g and the mass of ice is 48 g
a new gaseous species has been made in the laboratory. the number of atoms in each molecule is unknown. measurements of
he edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. calculate the least count of the micrometer
A baseball is thrown from the roof of 20.4m -tall building with an initial velocity of magnitude 13.9m/s, What is the speed of the ball just before it strikes the ground
find the resultant force on the donkey if the angle between the two ropes is a 60deg b 90deg c 120deg. one end is
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