The short pulses and the discovery of the pulsar in the Crab Nebula are strong evidence that pulsars are _____
A) red dwarfs
B) neutron stars
C) giant stars
D) yellow dwarfs
B
You might also like to view...
For simplicity, a professor uses 9.8 (meters per second) per second for the acceleration due to gravity instead of the more precise 9.81 (meters per second) per second. If Cavendish had made the same approximation, his estimate for Earth's mass have been
A. too high B. too low
Newton's Second Law of Motion tells us that the net force applied to an object equals its ________
A) mass times velocity B) mass times acceleration C) mass times energy D) momentum times velocity
When two identical waves arrive at the same place in phase, there is destructive interference
a. True b. False Indicate whether the statement is true or false
The voltage 8.00 sin (400t) is applied to a series RLC circuit, with R = 200 ?, L = 0.100 H, and C = 1.00 ?F. What are the impedance Z and the phase angle ??
a. 200 ?, ?37.0° b. 566 ?, +87.0° c. 2 470 ?, ?85.4° d. 2 540 ?, ?88.8° e. 393 ?, ?63.0°