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A flexible, circular conducting loop of radius 0.15m and resistance 4.0(omega sign) lies in a uniform magnetic field of 0.25t. The loop is pulled on opposite sides by equal forces and stretched until it's enclosed area us essentially zero m^2. It takes 0.30s to close the loop.
(a) determine the magnitude of the emf induced in the loop.
(b) at what rate is heat generated in the loop?
q1. light passes through a 230 linesmm grating and is observed on a 1.0m wide screen located 1.3m behind the grating.
A bar with cross-sectional area A = 0.5cm2 is used to conduct heat between two regions at different temperature. The bar is made of silver, k = 417 W/(m·K). Find the length of the silver bar
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
A Sodium surface, which has a work function ? of 2.46 eV is illuminated with ? = 300nm light. Find the threshold frequency for Sodium
An indestructible bullet 1.85 cm long is fired straight through a board that is 11.10 cm thick. The bullet strikes board with a speed of 455m/s and emerges with a speed of 279m/s. (To simplify, suppose that the bullet accelerates only while the fr..
Use work and energy to calculate the stopping force on an egg ( we will model it as an spherical object) that is dropped form a height of 2m
A nonconducting solid sphere of radius 11.2 cm has a uniform volume charge density. What is the sphere's volume charge density
A 40 kg box is sliding down a ramp angled at 15 degrees down from the horizontal. find the force of friction between the box and the ramp
What is the magnitude of the magnitic filed.
If the particle is sent back through the magnetic field (along the same initial path) but with 1.66 times its previous kinetic energy, how much time does it spend in the field during this trip
A wire and a 10 ohm resistor are used to form a circuit in the shape of a square, 20cm by 20cm. What is the induced current through the resistor and its direction
Assuming no heat loss to the surrounding environment, determine the minimum duration of time necessary for a 100 W aquarium tank heater to raise the temperature of 20.0 gallons of water by a difference of 10.0°C.
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