By what factor will an intensity change when the corresponding sound level increases by 3 dB?
a. 3
b. 0.5
c. 2
d. 4
e. 0.3
c
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Using the scale in the diagram below, what is the diameter of Mercury?
a.
about 240 km
b.
about 2400 km
c.
about 24,000 km
d.
about 240,000 km
e.
about 2.4 × 106 km
In an elastic collision between two bodies of equal mass, with body 2 initially at rest, body 1 moves off at angle ? relative to the direction of its initial velocity and body 2 at angle ?. The sine of the sum of ? and ?, sin(? + ?), is equal to
A. 0. B. 0.500. C. 0.707. D. 0.866. E. 1.00.
A car travels around an unbanked highway curve (radius 0.15 km) at a constant speed of 25 m/s. What is the magnitude of the resultant force acting on the driver, who weighs 0.80 kN?
a. 0.87 kN b. 0.34 kN c. 0.80 kN d. 0.00 kN e. 0.67 kN
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Answer the following statement true (T) or false (F)