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A toaster uses a heating wire. When the toaster is turned on at22 °C, the initial current is 1.19 A. A few seconds later, thetoaster warms up and the current has a value of 0.927 A. The average temperature coefficient of resistivity for this wire is 4.8x 10-4 (C°)-1. What is the temperature of the heating wire?
A weather balloon rises by the atmosphere, its volume expanding from 4.4m^3 to 10m^3 as temperature drops from 17 Degrees C to -13Degrees C.
You are traveling in a convertible with the top down. How far has the car moved when you get a chance to catch the tomato
A meterstick lies along the optical axis of a convex mirror of focal length -48 cm, with its nearest end 63 cm from the mirror. How long is the image of the meterstick
A body of mass 2.65 kg moves along the x-axis, and its motion is described by the equation x = 6 sin (13 t + 2), Find the resultant force on the body at t = 0.100 s
A cartoon coyote sets out to capture the elusive road-runner by wearing a pair of ACME jet-powered roller skates, which provide a constant horizontal acceleration of 10 m/s^2. The coyote starts off at rest 100 m from the edge of a cliff at the ins..
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around the inner core. What is the speed of the spool's ground-touching point
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 62.4° above the horizontal. By how much does the rocket clear the top of the wall
One particle, of mass m, moves with a speed v in the x-direction, and another particle, of mass 2m, moves with a speed v/2 in the y-direction. What is the velocity of the center of mass of these two particles
A negatively charged ball having a mass of 10 grams falls from rest in vacuum from a height of 3 meters in a uniform vertical electric field of 104 N/C. find Is the electric field pointing up or down
A rms AC voltage of 118 V at 60 Hz is applied to an RLC circuit with 11.8 mH inductor, 0.171 µF capacitor, and 43.1 ? resistor in series. What is the power factor of the circuit
A small glass bead has been charged to 60.0 . A metal ball bearing 2.70 above the bead feels a 1.50×10?2 downward electric force. What is the charge on the ball bearing
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall, what is the magnitude of the vertical component of force produced by the wall
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