Answer:
Term (symbol) Meaning
Standing wave Waves which appear to be vibrating vertically without traveling horizontally. Created from waves with identical frequency and amplitude interfering with one another while traveling in opposite directions.
Node Positions on a standing wave where the wave stays in a fixed position over time because of destructive interference.
Antinode Positions on a standing wave where the wave vibrates with maximum amplitude.
Fundamental frequency Lowest frequency of a standing wave that has the fewest number of nodes and antinodes.
Harmonic A standing wave that is a positive integer multiple of the fundamental frequency.
Explanation:
The mass of water moving around on Earth’s surface causes the amount of gravitational force.
<span>The answer is low gear. To dry the brakes of a vehicle, one must driv slowly in low gear and apply light pressure on the vehicle's brake pedal. Dry brakes are less expensive and are cheap when it needs replacement, yet under pressure they may cause more damage to the system than wet brakes, which are better in terms of emergency.</span>
The formula for the mass that remains:

m₀ - the initial mass, t - time, T - the half-life

The answer is c. 1.25 g.