A 2.0-kg block slides on a frictionless 25° inclined plane. A force of 4.6 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a. 1.8 m/s2 up the incline
b. 2.3 m/s2 up the incline
c. 6.6 m/s2 down the incline
d. 1.8 m/s2 down the incline
e. 2.3 m/s2 down the incline
d
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About how big is the largest asteroid known in the Solar System?
A. about 50 feet B. about one-quarter the size of the Moon C. about the size of Earth D. about 50 miles E. about 50 yards
Which one of the following is not true of neutrinos?
a. They have no charge. b. They have no spin. c. One type of neutrino may change into another type of neutrino. d. They are leptons. e. They do not take part in strong nuclear interactions.
Time-dependent plastic strain is _________strain.
Fill in the blank(s) with the appropriate word(s).
The graph represents the velocity of a car over time. Where the car ends up, relative to its starting point, can be found by
A. adding the slopes of each section of the graph.
B. adding area 1 to area 2.
C. subtracting area 2 from area 1.
D. subtracting area 1 from area 2.
