A vehicle designed to operate on a drag strip accelerates from zero to 34 m/s while undergoing a straight-line path displacement of 48 m. What is the vehicle's acceleration if its value may be assumed to be constant?
a. 9 m/s2
b. 6.0 m/s2
c. 12 m/s2
d. 18 m/s2
e. 24 m/s2
c
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A propeller is spun up from rest to 1500 rpm under the influence of a constant torque in 15.0s. If the work done by the engine in giving the propeller its final angular velocity is 25kJ, what is the torque supplied by the engine?
A. 21Nm B. 11 Nm C. 42 Nm D. 21 Nm E. 130 Nm
How does the energy of atoms in a hot object compare to the energy of atoms in a cold object?
A. Hot object atoms have more chemical and kinetic energy B. Hot object atoms have more chemical energy C. Hot object atoms have more potential and kinetic energy D. Hot object atoms have more potential energy E. Hot object atoms have more kinetic energy
For metals and ceramics to be superplastic, they must have a high ___________hardening rate.
Fill in the blank(s) with the appropriate word(s).
The fraction of the U.S. population that dies from cancer is typically
A. about 1 in 10,000 B. about 1 in 1 00 C. about 1 in 5 D. Most of us die from cancer.