A 2 500-kg car is moving at 2.30 m/s. How fast must a 1.5-kg toy car be moving so that the two have the same kinetic energy?
a. 61.9 m/s
b. 3.97 m/s
c. 93.9 m/s
d. 6 610 m/s
c
Physics & Space Science
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Two sound waves traveling through the air have different frequencies. Consequently, they must also have different
a. amplitudes. b. speeds. c. wavelengths. d. all of the above
Physics & Space Science
The wavelength of ultrasound at 1 million Hz in air where the speed of sound is 340 m/s is
a. 0.00000034 m b. 0.0000034 m c. 0.00034 m d. 0.34 m e. 340,000,000 m
Physics & Space Science
Calculate the ground state energy (in eV) for an electron in a box (an infinite well) having a width of 0.050 nm
a. 10 b. 75 c. 24 d. 150 e. 54
Physics & Space Science
Electromagnetic radiation, or light, travels at speed ___________ m/s
Fill in the blank(s) with correct word
Physics & Space Science