Two similar objects are thrown simultaneously from the top of a building with the same speed. One is thrown vertically downward, and the other at an angle. Both objects reach the ground at the same time
Indicate whether the statement is true or false
FALSE
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It is possible for a medium-mass star to collapse and form a white dwarf, but no planetary nebula
a. True b. False Indicate whether the statement is true or false
A mass 
is connected by a light string that passes over a pulley of mass M to a mass 
as shown in the figure. Both masses move vertically and there is no slippage between the string and the pulley. The pulley has a radius of 30.0 cm and a moment of inertia of 
If 
is 4.00 kg, 
is 3.00 kg and M is 6.00 kg, then what is the acceleration of the masses?
A. 0.695 
B. 0.703
C. 0.731
D. 0.754
E. 0.805
Which of the following describes a major danger of interstellar travel at near-light speed?
A) Atoms and ions in interstellar space will hit a fast-moving spacecraft like a flood of dangerous cosmic rays. B) Any interstellar journey will take much longer than the lives of the crew members. C) Time dilation will slow the heart beats of the crew to a dangerously low rate. D) Asteroid fields floating in interstellar space will present a navigational challenge.
As entropy in a system increases, energy within the system
A) becomes more ordered. B) becomes less ordered. C) reaches equilibrium. D) moves toward destruction.