Answer:
Increasing the wavelength of a rope by 50 % decreases its frequency by 33 %. The new wavelength is 67 % of the original (33 % less than the original).
change ms into s , thus 1/ 1000
679.0034 / 1000
6.790034 s .
Answer:
The rate at which bus 1 is going is 55 mph
The rate at which bus 1 is going is 35 mph
Explanation:
As per the question:
Suppose, the distance traveled by Bus 1 be 'd' at the rate R after a time, t = 3h
Thus
Suppose, the distance traveled by Bus 1 be 'd'' at the rate, R'20 mph slower than the rate of Bus 1 after the same time.
R' = R - 20
The distance is given as the product of rate and time:
d = Rt (1)
Now, the total distance given is 270 miles:
d + d' = 270
Now, using eqn (1):
Rt + R't = 270
3(R + R - 20) = 270
6R = 270 + 60
R = 55 mph
R' = R - 20 = 55 - 20 = 35 mph
It means the atoms of a object can't be created or destroyed. However - they can be moved around or be changed into different particles.
