If cyanobacteria had failed to appear on Earth, how would the evolution of Earth's atmosphere most likely be different

Which of the following is the Sl unit used by chemists to measure the amount of an element or substance? A. molecule B. mole C. atom D. milliliter

What two things make up the 96% of the universe

Gravity is a force. True False

An object with mass 110 kg moved in outer space. When it was at location its speed was 19.5 m/s. A single constant force N acted on the object while the object moved to location m. What is the speed of the object at this final location

Assumption of projectile motion

The force of attraction due to gravity between two objects is F'. If the distance between the two objects doubles and the mass of one object triples, the new gravitational force between them will be - A. 0.5F' B. 0.75F' C. 1.5F' D. 2.5F'

What is the formula for velocity?

How much time does it take 9,560 joules of work with 860 watts of power

A tennis ball may leave the racket of a top player on the serve with a speed of 60.0 m/s. If the ball's mass is 0.0600 kg and it is in contact with the racket for 0.

Cells are known as the foundation of all life. How have these small structures changed our planet?