The period of the wave is the time taken for an oscillation to occur.
The period of the wave can be found by dividing time by the number of oscillations.
The period of the wave is (2s)/(10 oscillations)
2/10= 0.2 seconds
The correct answer is 0.2 seconds.
The wave makes or completes one oscillation in 0.2 seconds.
The north and the south of the globe are magnitized and the needles of a compass are magnetized. Since positives attract negatives. The negative end of the earth attarcts the positive point of the needle to point towards it. The same happens with positive end of the earth and the negative point of the needle.
Answer:
C
Explanation:
friction causes increase of thermal energy, the remainder becomes kinetic energy.
Wear a seat belt of course.
Answer:
4050 gallons
Explanation:
In first half and hour both pumps are working property . There for it give, 45
gallons per minute . Half and hour is equal to 30 minutes.After one pump was broken only one pump is working 30 minutes .
For 1st 30 minutes ,( 2 pumps are working )
Gallons = 45 * 30 *2 = 2700 gallons
2nd 30 minutes ( 1 pump is working )
Gallons = 45*30*1 = 1350 gallons
Total gallons = 2700+1350
= 4050 gallons