Under what condition is average velocity equal to the average of the object's initial and final velocity?
A) This can only occur if there is no acceleration.
B) The acceleration must be constant.
C) The acceleration must be constantly increasing.
D) The acceleration must be constantly decreasing.
E) This can occur only when they are zero.
B
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In the Eagle nebula a shock wave crashes into colder, dark gas. What does this cause?
a) formation of large amounts of dust made of carbon and silicon b) causes no stars to form in the region for about 500,000 years c) causes a reflection nebula d) compression of gas and star formatione) destruction of all Bok globules
All Type II supernovae produce neutron stars when they collapse
Indicate whether the statement is true or false
You would expect millisecond pulsars to be
A) isolated in space. B) part of a binary system. C) most common in open clusters. D) collapsing rapidly. E) rotating slowly.
Light from an incandescent wire travels through a cool gas and is then dispersed into a(n) ______________ spectrum
Fill in the blank(s) with correct word