An iron core cannot support a star because
A) iron is the heaviest element, and sinks upon differentiation.
B) iron cannot fuse with other nuclei to produce energy.
C) iron is in the form of a gas, not a solid, in the center of a star.
D) iron supplies too much pressure.
E) iron has poor nuclear binding energy.
B
You might also like to view...
A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 
acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration. What is the angular distance traveled by a point 4.00 cm from the center, at the time 10.0 seconds from the start?
A. 20.8 radians B. 26.3 radians C. 37.5 radians D. 41.6 radians E. 47.3 radians
Consider a solenoid of length L, N windings, and radius b (L is much longer than b). A current I is flowing through the wire
If the radius of the solenoid were doubled (becoming 2b), and all other quantities remained the same, the magnetic field inside the solenoid would A) remain the same. B) become twice as strong. C) become one half as strong.
When a cannon fires a cannonball at a given speed, the smaller recoil speed of the cannon is due to differences in
A) forces. B) times. C) masses. D) momenta.
The common name for CH4 is ______________
Fill in the blank(s) with correct word