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If a toaster is plugged into a source of alternating voltage with an rms value of 66.2 V, an rms current of 9.09 A occurs in the heating element. What is the resistance of the toaster's heating element?
An airplane increases its speed from 100 m/s to 160 m/s, How much time does it take for the complete increase in speed
A 5.80 m length of 2.0 mm diameter wire carries a 750 mA current when 22.0 mV is applied between its ends. determine the electric field inside the wire
Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. A 60.0-W electric heating element is immersed in an insulated vessel containing 46.5 L of liquid nitrogen at its boiling point. How various kilograms of..
A river steamboat travels 36 miles downstream in the same time that it travels 24 miles upstream. What is the currents speed
Ultraviolet light of wavelength 280 nm is used in an experiment on photoelectric effect with lithium (c = 2.5 eV) cathode. Find the maximum kinetic energy of the photoelectrons and (b) the stopping potential.
Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s, Calculate the speed of the ball
A pair of slits separated by d = 1.30 mm is illuminated with light of = 610 nmwavelength and falls on a screen L = 2.00 m away. what was the minimum glass thickness
Constable Bob inspected skid marks near a traffic accident to determine the acceleration of initial velocity of lawn mower involved in the accident. Bob measured the lawn mower skid marks to be 32 m long. Witnesses said the lawn mower was skiddin..
Once the station is completed, it is set rotating at a rate that requires an object at the rim to have radial acceleration, thereby simulating Earth's surface gravity. This is accomplished using two small rockets, each with 130 thrust that are mounte..
A spring of force constant k=2.5*10^2 N/m is suspended form a rigid support. An object o mass 1.00 kg is attached to the uns How far below the starting point is equilibrium position for the object.
An unstretched spring has a length of 0.30 m. while the spring is stretched to a total length of 0.60 m, it supports traveling waves moving at 4.5 m/s. How fast would waves travel on this spring if it is stretched to 0.90 m.
A block starting atop a frictionless hemispherical dome starts sliding from rest. Write down the two equations of motion of the block in terms of r and ? (i.e. use polar coordinates).
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