Ways in conserving and preserving our water resources in our daily lives

If an electrically neutral atom has 4 protons and 4 neutrons and it loses 2 electrons, what is its charge? A) positive 2 B) negative 2 C) neutral D) varies

Which of the following is known as the pulse of a wave? a non-recurrent wave the trigger of a wave the repeat motion of a wave one cycle of a wave motion the input of energy to cause a wave motion There is more than one

The barricade at the end of a subway line has a large spring designed to compress 2.00 m when stopping a 1.10 ✕ 105 kg train moving at 0.350 m/s.

A soccer player kicks a soccer ball of mass 0.45 kg that is initially at rest. the player's foot is in contact with the ball for 1.6 * 10-3 s, and the force of the kick is given by f (t) = [ (7.0 * 104) t - (1.

Which is an action that can cause an object to move or change its state of motion? energy, force, equilibrium, or inertia?

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.

In a recent hockey game, one player (m=100kg) was moving at a velocity of 8 m/s when he ran into another player (m=300kg) who was at rest (v=0m/s). After the collision, the two players were stuck together (moving with the same velocity).

In a laser, electrical energy is changed to light energy, and a small amount of the energy is wasted as heat. Describe the total amount of the heat in the system (using the conservation of energy).

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova