It is expected that only elliptical galaxies have a massive black hole at their center.
Answer the following statement true (T) or false (F)
False
You might also like to view...
A stonecutter's chisel has an edge area of 0.7 cm2 . If the chisel is struck with a force of 42 N, what is the pressure exerted on the stone?
a. 600 N/m2 b. 30 000 N/m2 c. 300 000 N/m2 d. 600 000 N/m2 e. 6 000 N/m2
Calculate the speed at which a 0.723-kg object has the same momentum as a 1.30-kg object that is moving 0.515c
A) 0.734c B) 0.712c C) 0.981c D) 0.592c
A golf ball moving forward with 1 unit of momentum strikes a heavy bowling ball that is initially at rest. After the golf ball bounces backward, the bowling ball is in motion with a momentum that must be
1) 1 unit. 2) more than 1 unit. 3) less than 1 unit. The magnitude of the golf ball's momentum after collision must be somewhat less than 1 unit, for otherwise a violation would occur in the conservation of 4) energy. 5) momentum. 6) both. 7) neither.
Light travels at 300,000 km/sec. About how far does light travel in 10 years?
A) about 3,000,000 kilometers B) about 30,000 kilometers C) about 10 light-years D) about 10 trillion kilometers E) about 30 million seconds