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In the figure below, a battery of potential difference V = 13 V is connected to a resistive strip of resistanceR = 7.0 Ω. When an electron moves through the stripfrom one end to the other, (a) in which directionin the figure does the electron move (1 = upward, 2 = downward),(b) how much work (in eV) is done on the electronby the electric field in the strip, and (c) how much energy (in eV) is transferred to the thermal energy of the strip by the electron?
A circular coil enclosing an area of 140 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 3.0 Ohms, what is the average current in the coil during that time
A 74 kg man in a 5.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. find the pressure exerted by each leg on the floor
If the spring is stretched by 1.4 times the value in part A, and then released from rest, and the coefficient of kinetic friction between the box and the plank is 0.34, what is the magnitude of the initial acceleration of block as it starts moving..
Beats of frequency 4Hz are heard when a tuning fork of frequency 1000Hz and a vibrating wire are sounded together. What is frequency of the wire.
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley. Assume the rope and pulley are massless and there is no friction in the pulley.
A sphere of radius 1.0 cm is dropped into a glass cylinder filledwith a viscous liquid. The mass of the sphere is 12.0 g and thedensity of the liquid is 1200 kg/m3. The sphere reaches a terminalspeed of 0.15 m/s. What is the viscosity of the liquid?
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
q1. at one instant a bicyclist is 40.0 m due east of a parks flagpole going due south with a speed of 10.0 ms. then
Consider a system consisting of three masses on the axis. Mass m1 = 1.50kg is at x = 1.40m ; mass m2 at 2.30kg is at = 2.10 m; and mass m3= 3.30kg is at = 2.60 m
A transformer has310turns in the primary coil and130in the secondary coil. By what factor does it change the current
A cannon mounted on a cart that moves at a constant velocity v across the floor. How does this relate to point of reference
Your spaceship lands on a planet that has a gravitational force whose magnitude is 1/5th of Earth's gravitational force. If you weigh 800 N on Earth
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