Two masses are being pulled up a 30.0 degrees incline by a force F parallel to the incline. The acceleration down the incline is 1.00 
and the velocity is up the incline. The force is applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. There is no friction. The tension in the string is
A. 2070 N.
B. 1470 N.
C. 980 N.
D. 771 N.
E. 1,710 N.
A. 2070 N.
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Early in the history of the universe, the universe was
A) colder. B) the same temperature it is now. C) hotter.
A satellite is in an elliptical orbit around Earth. At one point on the ellipse, it is 25 × 106 m from the center of Earth and has a speed of 12,000 m/s
What is its speed when it is at another point on the ellipse, 95 × 106 m from the center of Earth? The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2. A) 12000 m/s B) 11000 m/s C) 10000 m/s D) 9000 m/s E) 8000 m/s
At present, the formation of the solar system is believed by most astronomers to have begun with a large, swirling volume of cold gas and dust called the ______________ nebula
a. condensation b. primordial c. accretion d. celestial
The time for one complete cycle of a periodic process to take place is called the __________
Fill in the blank(s) with correct word