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A wire 4.38m long and 6.00 mm in diameter has a resistance of 15.0mΩ. A potential difference of 28V is applied between the ends.
a) What is the current in the wire?b) Calculate the resistivity of the wire material.
A small object of mass 2.00×10?2kg and charge 3.0uC hangs from the ceiling by a thread. obtain the tension in the thread
An RL series circuit has R = 80.0? and L = 1.95mH . The series combination is connected across a 165V (rms), 63Hz power supply. Find the peak current
A sled of mass 5.37 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.13 m/s. At what speed does the sled move once the book is on it
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the total energy of the system
The drawing shows a skateboarder moving at 7.87 m/s along a horizontal section of a track that is slanted upward by 49.2 ° above the horizontal at its end, which is 0.739 m above the ground.
Point P is at a potential of 500.0 kV and point S is at a potential of 200.0 kV. by how much does its kinetic energy change
A solid disk rotates at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
An undamped 1.42-kg horizontal spring oscillator has a spring constant of 29.9 N/m. While oscillating, it is found to have a speed of 2.53 m/s as it passes through its equilibrium positio
A .250 kg ball is dropped from a height of 10.0 cm onto a spring, as illustrated. If the spring has a spring constant of 60.0 N/m , how high will the ball go
A straight object of length 2.7 cm lies along the central axis of a spherical mirror with focal length 8.5 cm. What is the length of its image in the mirror
A slingshot fires a pebble from the top of a building at a speed of 14.0m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired horizontally.
Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.86E-6 C. Object B is identical to object A and is also electrically neutral.
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