List the two basic types of intrinsic variable stars
What will be an ideal response?
1) Cepheid variables, 2) RR Lyrae variables
You might also like to view...
What is meant by a packed bed?
What will be an ideal response?
Young's Modulus: A piano wire has a radius of 0.50 mm. One end is fixed and the other is wrapped around a tuning peg, which has a diameter of 3.5 mm and is 80 cm away. After the wire just becomes taut, the peg is given three full turns. What is the tension in the wire? Young's modulus for steel is 2.0 × 1011 N/m2.
A. 3.8 kN B. 4.3 kN C. 6.5 kN D. 8.7 kN E. 9.8 kN
A 5.0-g particle moving 60 m/s collides with a 2.0-g particle initially at rest. After the collision each of the particles has a velocity that is directed 30° from the original direction of motion of the 5.0-g particle. What is the speed of the 2.0-g particle after the collision?
a. 72 m/s b. 87 m/s c. 79 m/s d. 94 m/s e. 67 m/s
The main form of radiation that our bodies emit is ultraviolet
Indicate whether the statement is true or false