A sonic boom occurs:
a. exactly when an object breaks the sound barrier.
b. just before an object breaks the sound barrier.
c. immediately after an object breaks the sound barrier.
d. when an object slows down to less than the speed of sound.
e. when the edge of the shock wave reaches a listening ear.
e
You might also like to view...
Red-colored diode lasers for pointers and surveying are made from pnjunctions of the compound semiconductor GaAs that has an energy gap of 1.42 eV. What is the wavelength of the light from a GaAs laser?
What will be an ideal response?
There are 2.00 dry pints to 1.00 dry quart, 8.00 dry quarts to 1.00 peck, 4.00 pecks to 1.00 bushel. An organic farmer wants to pick enough berries to fill 40,000 pint containers. How many bushels of berries does the farmer need?
What will be an ideal response?
A proton initially moves left to right long the x axis at a speed of 2.00 × 10^4 m/s. It moves into an electric field, which points in the negative x direction, and travels a distance of 0.200 m before coming to rest. What acceleration magnitude does the proton experience?
a. 2.67 × 10^12 m/s2 c. 6.67 × 10^6 m/s2 b. 9.33 × 10^9 m/s2 d. 1.00 × 10^9 m/s2
Pluto's bulk density is
A) 3,400 kg/m3, comparable to our Moon's. B) 2,100 kg/m3, similar to Callisto's mix of rock and ice. C) 1,200 kg/m3, like Mimas, made of almost pure ice. D) 700 kg/m3, like Saturn a mix of hydrogen and helium slush. E) 400 kg/m3, like Comet Halley's nucleus, a ice ball with many gas pockets.