mass = 30kg
frictional force = coefficient of friction * (mass * g)
g = 9.8 m/s^2
So:
60N = x * 294 N
x = 60 N / 294 N = 0,2
Answer:
1.7 m/s
Explanation:
52,000kg x 3.4 m/s= 176,800
52,000+52,000= 104,000
176,800/104,000= 1.7m/s
90km/4hrs=22.5kn/hr average speed. Her dispacement is 0. Her trip started and ended in the same place.
Answer:
= 53.4 m/s
Explanation:
Velocity of a sound is given by the formula;
Velocity = Frequency × 2 (Length)
Frequency = 30 Hz
Length = 89 cm, equivalent to 0.89 M
Therefore;
Velocity = 30 × 2 ×0.89
= 53.4 m/s
Thus; the velocity or the speed of sound is 53.4 m/s
Answer:
10,800 m (^2)
Explanation:
<u>234,000 m/s - 180,000 m/s</u> = 10,800 m (^2)
5s
