In the larger clusters, colliding galaxies tend to pass through one another
Indicate whether the statement is true or false
TRUE
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There are samples of two different isotopes, X and Y. Both contain the same number of radioactive atoms. Sample X has a half-life half that of Y. How do their decay rates compare?
a. The rates of X and Y are equal. b. X has a greater rate than Y. c. The rate depends on atomic number, not half-life. d. X has a smaller rate than Y.
Molar Specific Heats: A rigid container is filled with 4.0 mol of air with CV = 2.5R. How much does the internal (thermal) energy of the air change if its temperature rises from 18°C to 448°C? (R = 8.31 J/mol ? K)
A. 35,800 J B. 430 J C. 3580 J D. 8940 J
Stars in binary systems can transfer matter from one star to another at a Lagrange point
a. True b. False Indicate whether the statement is true or false
A projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. What is the time it takes for the projectile to hit the ground?
A. 2.54 s B. 3.02 s C. 4.59 s D. 5.31 s E. 6.04 s