Seesaw is an example of what knid of simple machines

A tennis player receives a shot with the ball (0.0631 kg) traveling horizontally at 53.7 m/s and returns the shot with the ball traveling horizontally 40.5 m/s in the opposite direction. a. What is the impulse delivered to the ball by the racquet? b.

What is the difference between diffusion and osmosis?

During your winter vacation, you enter a "dogsled" race across a frictionless frozen lake, in which the sleds are pulled by students instead of dogs.

Which way does thermal energy move when a cool breeze moves over a warm lake?

Periodic trends vary as we move across the periodic table. In general, as you move across a row in the periodic table A) ionic size increases. B) atomic radius decreases. C) nuclear charge decreases. D) ionization energy decreases.

One mole of water is equivalent to 18 grams of water. a glass of water has a mass of 200 g. how many moles of water is in this?

A ball is thrown upward and reaches a maximum height of 100m and then returns back to where it was launched. The displacement of the ball is A) 0 m B) 100 m C) 200 m D) more than 200 m

What does the difference in force depend upon?

An aircraft with the mass of 300000kg is flying at an altitude of 2000m with a speed of 100m/s what is the kinetic energy of the aircraft

What is the main idea behind the law of definite proportions?