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The rear window of a car consists of thirteen thin wires (resistivity = 88.0 * 10^-8 ohms) embedded in the glass. The wires are connected in paraellel to the 12.0 Vbattery, and each has a length of 1.30m. The defogger can melt 2.10*10^-2kg of ice at 0 degrees celcius into water at 0 degrees celcius in two minutes. Assume that all the power delivered to the wires is used immediately to melt the ice. Find the cross-sectional area of each wire.
With light from a gaseous discharge tube incident normally on a grating with slit separation 1.92 ?m, Compute the wavelength of the light
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
A 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. calculate the final temperature of the puddle
A large parallel plate capacitor has plate separation of 0.85 cm and plate area of 391 cm2. How much work is done on the capacitor as the plate separation is increased to 1.70 cm
Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 503nm, What is the intensity in (W/m^2) delivered to a rod
What is the magnitude of the force that maintains circular motion acting on puck.
A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.32 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A 4.1×104 locomotive, with steel wheels, is traveling at 7.0 on steel rails when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
A cryogenic storage container holds liquid helium, which boils at 4.2 K. Suppose a student painted the outer shell of the container black, Determine the rate of heat loss due to radiation
An ideal gas is expanded isothermally from 20L to 30L. During thismethod , 6J of energy is expended by the external mechanism that expanded the gas. Which of the statements is correct.
The 95 mu F capacitor in a defibrillator unit supplies an average of 6500 W of power to the chest of the patient during a discharge lasting 5.0 ms
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
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