An object moves with a constant velocity. Which of the following cannot be true for the object?
1.No forces act on the object.
2.A single force acts on the object.
3.Two forces act on the object.
4.Three forces act on the object.
2
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What evidence do we have that the center of our galaxy is a powerful source of energy and a supermassive black hole?
What will be an ideal response?
Pressure in a Liquid: A container has a vertical tube, whose inner radius is 12.00 mm, connected to it at its side, as shown in the figure. An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B. The liquid supports a 20-cm high column of oil, between levels B and C, whose density is 320 kg/m3. The gauge pressure at level B is closest to
A. 630 Pa. B. 310 Pa. C. 470 Pa. D. 790 Pa. E. 940 Pa.
Most of the larger moons of gas giants were formed at the same time as the gas giants, but somewhere else in the Solar System, and captured by the gas giants later.
Answer the following statement true (T) or false (F)
Which tin can will roll down an incline in the shortest time, one filled with water or one filled with ice? (Hint: water 'slides' inside the can.)
A) with water B) with ice C) both the same D) need more information