A car is traveling at a velocity of 7.5 m/s. How far will it get in 34 sec
1 answer:
Answer:
255 m
Explanation:
The car is moving by uniform motion (constant velocity), so we can calculate the distance it travels by using the equation
where
d is the distance travelled
v is the velocity of the car
t is the time interval
In this problem:
v = 7.5 m/s is the velocity of the car
t = 34 s is the time interval
Therefore, the distance covered by the car is
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Answer:
20 pig callers
Explanation:
Given that:
A pig caller produced intensity level of a sound = 107 dB
To find how many pig callers required to generate an intensity level of 120 dB;
we have:
120 dB - 107 dB = 13 dB
Taking the logarithm function;
where;
= initial intensity
I = 19.95
I ≅ 20 pig callers