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Question: An automobile starter motor has an equivalent resistance of 0.045 Ω and is supplied by a 12.0 V battery which has a 0.0055 Ω internal resistance.
(a) What is the current to the motor in A?
(b) What voltage is applied to it in V?
(c) What power is supplied to the motor in kW?
Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 40.0 degree west of north while the ship B travels 50.0 ?east of north at 40.0mph. What is the speed of ship A as seen by ship B
A 70 kilogram guy can walk up the 2109 steps to the top floor (440 meter high) of the Sears Tower in 20 minute. Compute how much power must this guy generate to do that
Consider two spheres of radius a with their centers separated by a distance d>>a. Find the capacitance of the system of the two spheres
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 2.00 mT. Determine the radius of the circular path
A parallel-plate air capacitor with a capacitance of 245 has the charge of magnitude 0.1502 on each plate. The plates have the separation of 0.323.
Show that x(t) = x0 sin(?t) is a solution of the undamped harmonic oscillator differential equation at small angles d^2x(t)/dt^2 = -? 2x(t).
The inside diameter of a hydraulic hose is 0.375 in. It is recommended that the fluid velocity in a supply line not exceed 10 ft/s.
A 4.4kg ball with a velocity of 5.0m/s in the+x-direction collides head-on elastically with a stationary 2.5kg ball. What is the speed of the second ball after the collision
What is the approximate energy required to raise the temperature of 9 L of air by 300 °C? The volume is held constant. (Assume air almost entirely consists of nitrogen, oxygen, and argon, and that it is initially at 273 K.
In a Young's double-slit experiment, the seventh dark fringe is placed 0.022 meter to the side of the central bright finger on a flat screen, Obtain what the wavelength of the light being used
Why is a hot air balloon stiff? Is the pressure inside the balloon higher than the pressure outside (atmospheric pressure)? If the pressure inside is higher than the outside, how is it explained with ideal gas law?
A 8.40 kg object oscillates at the end of a vertical spring that has a spring constant of 2.45 multiply.gif 104 N/m. Calculate the frequency of the dampened oscillation
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