What is required for a rocket to lift off into space?

a. thrust that is greater than Earth's gravity

b. mass that is greater than Earth's

c. very little air resistance

d. more velocity than friction

During an equinox, the number of daylight hours and nighttime hours are nearly equal all over the world. true or false?

How does the speed of sound in water compare to the speed of sound in air

How much heat is absorbed by a 57g iron skillet when its temperature rises from 6oC to 20oC?

A 60-kg box is being pushed a distance of 6.2 m across the floor by a force P with arrow whose magnitude is 150 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.21.

A Martian rover is moving up a hill sloped at 30.0° with the horizontal. If it has a constant velocity of 1.50 meters/second, calculate its vertical displacement after 21.0 seconds.

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?

A certain chemical reaction experiences a 7.50 x 10-7 kilogram loss in mass. If this mass were to be totally converted to energy, what would be the magnitude of that energy.

How does gravity create inertia