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An electron is initially at rest just outside a large copper surface that has a charge density of 1.04 x 10-6 C/m2. How far has the electron moved in 1.12 x 10-9 s if the field is uniform over this region? (Enter the magnitude only.)
A person pulls a toboggan for a distance of 43.6 m along the snow with a rope directed 28.3 ° above the snow. The tension in the rope is 91.3 N. How much work is done on the toboggan by the tension force
A heat engine is to be built to extract energy from the temperature gradient in the ocean. what is the maximum efficiency such an engine can have
A centrifuge in a medical laboratory is switched on and rotates through 3900 revolutions. determine the final angular speed of the centrifuge
While, entering a freeway , a car accelerates from a speed of 90 m/s at a rate of 2.17 m/s^2 for 5.50 s. Whats the cars final velocity
A machine is designed to perform a given amount of work in a given amount of time. Find the power of the second machine
The circular disk shown rotates in a horizontal plane. A 3-lb block rests on the disk 8 in. from the axis of rotation. find the length of time required for the block to begin to slip
Consider the circuit in the figure below with resistors R1 = 2,400 ?, R2 = 4,400 ?, and R3 = 1,100 ?, What is the magnitude of the current in the circuit
q1. an electric field of 254000 nc points due west at the certain spot. what are the magnitude and direction of the
A hollow cubical box is 0.498 m on an edge. This box is floating in a lake with 1/5 of its height beneath the surface. The walls of the box have a negligible thickness. Water is poured into the box. What is the depth of the water in the box at the in..
A 2.00-m-long air column is open at both ends. Thefrequency of a certain harmonic is 410 Hz, Determine the speed of soundin the air column
A planoconcave lens (n = 1.52) has a focal length of -24.6cm. What is the radius of the concave surface
Why is the thermal energy not shared instantaneously with the rest of the block to warm it as a whole?
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