Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown
The force F2 needed to keep piston 2 in place is 40 pounds.
a.
True
b.
False
a
Physics & Space Science
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The presence of vesicular basalts among the lunar rock samples shows that
a. the lunar surface was fragmented by meteorite impacts. b. volcanism did not occur on the moon. c. the crust must have been made of anorthosite. d. molten lava once flowed over the lunar surface. e. the moon was once hit by a very large meteorite.
Physics & Space Science
Where on the H-R diagram are the majority of stars that dominate the night sky?
What will be an ideal response?
Physics & Space Science
Our Sun and its planets were formed about _____
A) 2.2 billion years ago B) 4.6 billion years ago C) 5.2 billion years ago D) 6.1 billion years ago
Physics & Space Science
Oort-cloud comets are so far from the Sun that the gravity of neighboring stars can alter their orbits
Indicate whether the statement is true or false
Physics & Space Science