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A toaster uses a Nicrhrome heating wire. When the toaster isturned on at 20o C, the initial current is 1.5A. A few seconds later, the toaster warms up and the current nowhas a value of 1.30A. The average temp coefficient ofresistivity for Nichrome is4.5x10-4(Co)-1. What is the temp of the heating wire?
Standing on the surface of planet zork (which has mass M_z and radius R_z) you throw a rock(mass m straight up). At what speed was it thrown
What is direction of the velocity of the canoe
A vertical tube that is closed at the upper end and open at the lower end contains an air pocket. The open end of the tube is under the water of a lake. What is the volume of the air pocket under these conditions
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires
A parallel-plate capacitor has 2.00 cm2 plates that are separated by 5.00 mm with air between them. If a 12.0 V battery is connected to this capacitor, how much energy does it store?
If the partial pressure of water vapor is 47 mm Hg in the lungs at 760 mm Hg pressure, what percentage of air does the water vapor constitute?
a container of volume 110-5 cm3 holds three molecules of gas b which we label b1 b2 and b3. in 1 second there are two
When you irradiate a metal with light of wavelength 435 nm in an investigation of the photoelectric effect, Find the work function of the irradiated metal in electron volts
question1a small object with a mass of 420 mg carries a charge of 40.0 nc and is pending by a thread between the
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. The plates are 0.600mm apart. What is the electric-field magnitude between the plates
a 280 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. the ramp is inclined
A potter's wheel having a radius 0.48 m and a moment of inertia of 10.4 kg · m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 4.5 s by pressing a wet rag against the rim and exerting a radially inward force of 65 N. Find the effe..
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