Which is heated in its interior by nuclear processes?
A) Sun
B) Earth
C) both of these
D) neither of these
Answer: C
You might also like to view...
A bar (L = 80 cm) moves on two frictionless rails, as shown, in a region where the magnetic field is uniform (B = 0.30 T) and into the paper. If v = 50 cm/s and R = 60 m?, what is the magnetic force on the moving bar?
a.
0.48 N to the right
b.
0.48 N to the left
c.
0.32 N to the left
d.
0.32 N to the right
e.
None of the above
What is Newton's Third law of motion?
A. When two bodies interact, they create equal and opposite forces on each other. B. Every mass exerts a force on any other mass that is proportional to the product of the masses divided by the square of the distance between them. C. Force equals mass times acceleration, F = ma. D. A body continues in a state of rest or uniform motion in a straight line unless made to change that state by forces acting on it.
An annular solar eclipse occurs every year.
Answer the following statement true (T) or false (F)
An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along the y-axis. What is the magnitude of the third force?
A) 135 N B) 15.0 N C) 48.0 N D) 67.5 N E) 96.0 N