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When you step on the accelerator to increase the speed of your car, the force that accelerates the car is
a) the force of your foot on the accelerator
b) the force of friction of the road on the tires
c) the force of the engine on the driveshaft
d) the normal force of the road on the tires
e) none of the above
A car is moving on a flat horizontal circular track of radius 120m. The speed of the car is constant, 15 m/s. The mass of the car is 1200kg. Ignore air resistance.
given a sargent ideal gas cycle. All process ar quasi-static, and the heat capacities are constant. Prove that the thermal efficiency of an engine performing a cycle
What is the time of oscillation of block
Two insulated wires, each 2.90 m long,are taped together to form a two-wire unit that is 2.90 m long. One wire carries a current of 7.00 A;the other carries a smaller current I in the oppositedirection.
A certain capacitor in a circuit has a capacitive reactance of 30.89 ohms when the frequency is 177 Hz. What capacitive reactance does the capacitor have
An LC circuit is built with a 50mH inductor and an 8.0pF capacitor, The capacitor voltage has its maximum value of 40V at t=0s, What is the inductor current at that time
two tiny conducting spheres are identical and carry charges of -20.2c and 54.8c. they are separated by a distance of
q1. if a parallel mirror he-ne laser had a homogeneous line shape with v1.5ghz and small signal peak coefficient of
You have a parallel plate capacitor with plates of 1.3 m2, and the magnitude of charge on each plate is 6.7 C. What is the force on an electron between the plates?
The density of air under standard laboratory conditions is 1.29{\rm kg}/{\rm m}^{3} , and about 20.0\% of that air consists of oxygen. Typically, people breathe about .5 L of air per breath.
a spring is hanging vertically from a ceiling. assume the springs mass is negligbile. i hang a 0.5kg mass on the spring
1 a. show the quantum confinement effects in quantum wellsnbspb. outline the density of states for 3d 2d 1d and 0d
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