For a particular type of ceramic, the strength and elastic modulus both increase as the _________increases.
Fill in the blank(s) with the appropriate word(s).
density
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The process of _______________ depends partly on the presence of short-lived radioactive elements whose rapid decay would have released enough heat to melt the interior of planets
Fill in the blank(s) with correct word
Is it possible for the driver of a car to accelerate the car without pressing on the accelerator?
A) Yes, by pressing on the brake. B) Yes, by both of the above methods. C) Yes, by turning the steering wheel. D) No, because the only way to speed up is to press on the accelerator. E) No, because of the way that we define the word "acceleration" in physics.
By what factor is the self-inductance of an air solenoid changed if only its number of coil turns, N, is multiplied by five?
a. 1/5 b. 5 c. 15 d. 25 e. 1/25
Friction: Jason takes off across level water on his jet-powered skis. The combined mass of Jason and his skis is 75 kg (the mass of the fuel is negligible). The skis produce a forward thrust of 200 N and have a coefficient of kinetic friction with water of 0.10. Unfortunately, the skis run out of fuel after only 90 s. What is Jason's top speed?
A. 150 m/s B. 240 m/s C. 24 m/s D. 90 m/s