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A car engine wastes 90 percent of its energy as heat. If the car burns a gallon of gas (3785 g),
a) Obtain how much heat does it dump into the air?
(in calories)
b) Obtain how much work can it do?
(in Joules)
A 35 microfarad capacitor is in series with a 250 ohm resistor and10V battery. Initally a switch in the circuit is open and the capcitor is uncharged. What is the current in the circuit immediately after the switchis closed?
how much work is required to turn an electric dipole 180deg in a uniform electric field of magnitude e 42.0 nc if p
The four tires of an automobile are inflated to a gauge pressure of 2.10E+5 Pa. Each tire has an area of 0.0267 m2 in contact with the ground. Find out the weight of the automobile.
when dealing with large quantities of something it is often convenient to define a term that refers to a certain
An electron moves in a circular path perpendicular to a constantmagnetic field with a magnitude of 5.00 mT. The angular momentum of the electron about the center of the circle is 2.50multiplied by 10-25J·s.
To start her lawn mower, Julie pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its central axis of I=0.570 kg(m2), How much tension must the rope exert
A spherical capacitor with a 1.60 gap between the spheres has a capacitance of 80.0. What are the diameters of the the two spheres
A cart (821.7g) connected to a hanging mass (240g) is free to move on an incline plane with an angle of 15.3 degrees. Determine which way the hanging mass will move
If a 200 kg, 3 m radius merry-go-round was spinning at 1 rev/s and you dropped a 25 kg bag of sand vertically onto the edge of the platform, what is the angular speed
A force gives a 100-kg mass an acceleration of 2 m/s2. If the same force acts on a mass of 1000 kg, what acceleration does it produce
A shell is shot with an initial velocityv0 of 15 m/s, at an angle of θ0= 60°with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass.
It is 155cm from your eyes to your toes. You're standing 190cm in front of the tall mirror. How far is it from your eyes to the image of your toes.
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