The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10 × 10^-6/°C. On a cold day when the temperature is –10°C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40°C is
a. 300.0015 m
b. 300.015 m
c. 300.15 m
d. 301.5 m
e. 315 m
C
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Mesons are composed of
A. any odd number of quarks. B. three quarks of matching color. C. three quarks of three different colors. D. a colorless quark-antiquark pair.
A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.19, at what rate does the box accelerate down the slope?
A) 4.7 m/s2 B) 5.2 m/s2 C) 5.5 m/s2 D) 6.2 m/s2
A 0.150-m-radius grinding wheel starts at rest and develops an angular speed of 12.00 rad/s in 7.80 s. What is the average tangential acceleration of a point on the wheel's edge?
a. 0.231 m/s2 b. 1.54 m/s2 c. 10.3 m/s2 d. 14.0 m/s2
The time for one complete cycle of a periodic process to take place is called the period
Indicate whether the statement is true or false