A circle has an area of 3.0 m2 . A second circle has double the radius of the first. The area of the second circle is ____ times that of the first
a. 0.8
b. 2.0
c. 4.0
d. 6.0
c
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Addition by 1. Components: Three vectors, src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f15g1q38g6.jpg" style="vertical-align: -5.0px;" />?5.5 m-2.5 m
A. 24° above the +x-axis
B. 24° below the +x-axis
C. 66° above the +x-axis
D. 66° below the +x-axis
, 
, and 
, have the components shown in the table. What angle does the resultant of these three vectors make with the +x-axis??x componenty component
?-3.5 m4.5 m
?0.00 m-6.5 m
The case of Venus tells us that which of the following is a critical factor in determining surface habitability?
A) planetary size B) levels of geological activity C) distance from the Sun D) the presence of a magnetic field
A small boat is moving at a velocity of 3.35 m/s when it is accelerated by a river current perpendicular to the initial direction of motion. If the acceleration of the current is 0.750 m/s2, what will be the new velocity of the boat after 33.5 s?
A) 25.3 m/s at 82.4° from initial direction of motion B) 25.3 m/s at 7.59° from initial direction of motion C) 640.1 m/s at 82.4° from initial direction of motion D) 640.1 m/s at 7.59° from initial direction of motion
If P = 6.0 N, what is the magnitude of the force exerted on block 1 by block 2?
a.
6.4 N
b.
5.6 N
c.
4.8 N
d.
7.2 N
e.
8.4 N