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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?
An 6.60-cm-diameter, 370 g sphere is released from rest at the top of a 2.00-m-long, 19.0 deg incline. find the sphere's angular velocity at the bottom of the incline
A bungee cord is stretched between two poles with a force of 415 N. What is the velocity of a wave on this bungee cord
A suitcase weighing 228N is at rest on the floor of a hotel lobby. The co-efficient of static friction between the suitcase and the floor is 0.49, and the coefficient of kinetic friction is 0.313. With what least amount horizontal force must a bel..
1500 cm3 of ideal gas at STP is cooled to -20o C and put into a 1000 cm3 container. what is the final gauge pressure?
A wheel 65 cm in diameter accelerates uniformly from 230 rpm to 355 rpm in 7s. How far will a point on the edge of the wheel have traveled in this time.
0.10mol of nitrogen gas follow the two processes shown in the figure(Figure 1) . How much heat is required for isothermal process? How much heat is required for adiabatic process?
write a problem containing at least three forces of different magnitudes and directions which results in a constant
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. What is the speed of the rider at the top of the loop
Air at 80 kPa, 27 degrees C and 220 m/s eneters a diffuser at a rate of 2.5 kg/s and leaves at 42 degrees C. the exit area of the diffuser is 400 cm2. the air is estimated to lose heat at a rate of 18 kJ/s during this process.
A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E=110V, What is the resistance of the resistor
A 2.0-kg projectile is fired with initial velocity componentsV0x=30 m/s andV0y=40m/s from a pointon the earth's surface. How much work was done in firing the projectile
A rigid tank contains 1.50 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.4 atm to 4.30 atm
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