If a ball was dropped from 120 meters. if it takes 2 seconds for the ball to fall 60 meters, how long will it take for the ball to reach the ground

You stand sideways in a moving train. Estimate how far apart you should keep your feet so that when the train accelerates at 3.2 m/s2 you can still stand without holding anything. Let d be the distance of separation between your feet, and h = 0.

What happens to the temperature of a substance when it is changing state of matter?

The carburetors on inboard mounted gasoline engines must be equipped with an approved back-fire flame arrestor. what purpose does having a back-fire flame arrestor play?

Where did the element heavier than hydrogen and helium come from?

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: () Na2HPO4 → () Na4P2O7 + () H2O

Which of the following decreases the dissolving rate of a solid in water?

Why might a plant that normally grows in one environment not grow well in a different environment?

Cara menghitung daya dorong

Which rock is made mostly of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite?

What does the atomic number tell us about an atom of a certain element?