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By measuring the spectrum of wavelengths of light from our sun, we know that its surface temperature is 5820 K . By measuring the rate at which we receive its energy on earth, we know that it is radiating a total of 3.92×1026 J/s and behaves nearly like an ideal blackbody. Use this information to calculate the diameter of our sun.
d = _____ m
Find the magnetic force due to a long wire(8.9A) on a square coil (10A) of side 615cm the centre of which is at 10.1cm from the wire
Starting from rest, a 96-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 790 N, How far did he slide down the pole
A 2.5kg block slides along a frictionless surface at 1.6m/s. A second block, sliding at a faster 4.0m/sPh, what was the mass of the second block
A child is trying to stack two uniform wooden blocks, 12 cm in length, so they will protrude as much as possible over the edge of a table
A block slides down a frictionless ramp of height 0.37 meters. How far will the block travel from the base of the ramp before the velocity reaches 2.3 m/s
The liquid of density p in a horizontal pipe of diameter d1 before a constriction is at pressure P1 and flowing with the speed v1
Consider an RLC circuit with driving emf amplitude Εm = 10 V, resistance R = 12 Ω, inductance L = 1.0 H, Find the amplitude of the voltage across the inductor at resonance
An air conditioner draws 19A at 220-V ac. The connecting cord is copper wire with a diameter of 1.291mm, If the length of the cord (containing two wires) is 6.5m , how much power is dissipated in the wiring
calculate the magnitude of the force if Q1 is 4 x 10^-9 coulombs and Q2 is 8 x 10^-12 coulombs and the distance between them is 3 x 10^-8 meters.
An elevator is moving upward at 1.07 m/s when it experiences an acceleration 0.30 m/s2 downward, over a distance of 0.71 m. What will its final velocity be
A jogger's internal energy changes because he performs 6.10 105 J of work and gives off 4.9 multiplied by 105 J of heat. Determine the magnitude of the heat given off while walking
A 1.98 nF capacitor with an initial charge of 4.55 µC is discharged through a 1.23 k? resistor. What is the maximum current in the resistor
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