An automobile delivers 30.0 hp to its wheels when moving at a constant speed of 24.0 m/s. What is the resistance force on the automobile at this speed? (1 hp = 746 watts)
a. 5.37E+5 N
b. 1.21E+3 N
c. 9.33E+2 N
d. 3.73E+2 N
e. 5.97E+2 N
c
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The longitudinal strength of wood is due to the high strength of crystalline _________cells.
Fill in the blank(s) with the appropriate word(s).
Describe at least two things that make Earth unique in the solar system?
What will be an ideal response?
A satellite is in a circular orbit about the Earth at an altitude at which air resistance is negligible. Which of the following statements is true?
a. There is only one force acting on the satellite. b. There are two forces acting on the satellite, and their resultant is zero. c. There are two forces acting on the satellite, and their resultant is not zero. d. There are three forces acting on the satellite. e. None of the preceding statements are correct.
In its lowest quantum state, the energy of a diatomic harmonic oscillator is
A) (1/4)hf. B) (1/2)hf. C) hf. D) 2hf. E) (3/2)hf.