Why do different stars have different life cycles

How did the Spanish civil war led to ww2

Henry takes a boat ride for 15 minutes to reach his destination. If the boat was traveling at 6 meters/second, how far did the boat travel?

A motorcyclist rides for 1.5 hours at a speed of 80 km/h. Then she encounters traffic and rides 20 km at an average speed of 25 km/h. What total distance did she cover?

What is the difference between a radiological weapon and a nuclear weapon?

If two objects of unequal mass collide, both objects will continue to move in the direction of

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars

A 111.6 g sample of iron was heated from 0°C to 20°C. It absorbed 1004 J of energy. What is the specific heat capacity of iron?

A car is driving towards a brick wall at a constant velocity (don't try this at home!) and the driver honks the horn of the car. the sound of the horn reflects from the wall and the echo is heard by the driver.

Mass number of an atom with 11 protons