What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of

He product side of a chemical reaction is shown. → 7Ti2 (SO4) 3 Which number represents a coefficient? 2 3 4 7

A car of mass 1,000 kilograms is moving initially at the speed of 22 meters/second. When the brakes are applied, it takes the car 3.0 seconds to stop. What is the force required to stop the car?

In triangle ABC, the angles A and B have the same measure, while the measure of angle C is 21degrees larger than the measure of each of A and B. What are the measures of the three angles?

What is energy that comes from the movement of particles

What is the purpose of an man made ecosystem

Newton's Second law of Motion (F = ma) is one of the basis of forces and motion. How is it very similar to his First law and why is finding the acceleration of the system (the main reason we use it) so important to solving physics and real world

You find out that it takes 2 sec. for the swing to complete one cycle. what is the swing's period and frequency?

Can you chemical change or alter DNA

Give an example in which velocity is zero yet acceleration is not.

A 2,537-kg truck moving at 14 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 8 m/s. What was the mass (in kg) of the struck car