The law of conservation of matter states that during a chemical reaction, the amount of matter

increases.

decreases.

disappears

stays the same

An electrical circuit connected to a 12-volt battery is connected in series to a 12-ohm resistor. What is the current flowing through the circuit? A. 0 amps B. 1 amp C. 6 amps D. 12 amps

A 10N force is exerted on a box moving it 20m in the same direction what is the magnitude of work done on the box

A coil with an inductance of 2.5 H and a resistance of 15 Ω is suddenly connected to an ideal battery with ε = 140 V. At 0.

An object has a forward force of 100N and a reverse force of 25N. What is the resultant force?

Describe a beach that was near stormy seas and powerful waves

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