A loop-like bend in a river channel is called
a. a meander.
b. a stream.
c. a detour.
d. none of these.
a
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Free Fall: A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible.(a) How long does it take the ball to reach the maximum height?(b) What is the maximum height reached by the ball?(c) What is its speed after 4.2 s?
What will be an ideal response?
Interference effects observed in the early 1800s were instrumental in supporting a concept of the existence of which property of light?
a. polarization b. particle nature c. wave nature d. electromagnetic character
The primary function of a moderator in a nuclear reactor is to
a. absorb neutrons. b. cool the fuel rods. c. slow down neutrons. d. transfer heat.
Current: A charge of 12 C passes through an electroplating apparatus in 2.0 min. What is the average current in the apparatus?
A. 0.10 A B. 0.60 A C. 1.0 A D. 6.0 A