A small dense object is suspended from the rear view mirror in a car by a lightweight fiber. As the car is accelerating at 1.90 m/s2, what angle does the string make with the vertical?
11.0 degrees
Physics & Space Science
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A large water storage container is filled to a depth of 3.0 m. The volume above the water is filled with air. In order to pump the water from the container, the air pressure in the container is increased by 3.0 
105 N/m2. What happens to the pressure in the water at a depth of 1.0 m when the air pressure is increased?
A.
Nothing, it is still at a depth of 1.0 m and the pressure in the water depends only on the depth.
B.
It increases by 1.0 
105 N/m2, since it is at 1/3 the depth of the water.
105 N/m2, since it is at 1/3 the depth of the water.C.
It increases by 2.0 
105 N/m2, since it is at 2/3 the depth from the bottom of the container.
105 N/m2, since it is at 2/3 the depth from the bottom of the container.D.
It increases by 3.0 
105 N/m2.
105 N/m2.E.
It increases by 3.0 
105 N/m2 + 9.8 
103 N/m2 since it is 1.0 m deep in the water.
105 N/m2 + 9.8 103 N/m2 since it is 1.0 m deep in the water.
Physics & Space Science
Using Jupiter's axial tilt, explain why its rings are harder to observe from Earth than even the dark rings of Uranus
What will be an ideal response?
Physics & Space Science
After what evolutionary stage does a star become a white dwarf?
a. protostar b. pre-main sequence c. main sequence d. giant
Physics & Space Science
Helium always has two neutrons in its nucleus
a. True b. False Indicate whether the statement is true or false
Physics & Space Science