Answer:
Power, P = 20.4 kW
Explanation:
It is given that,
Intensity of sound,
Distance from the speakers, r = 25 m
We need to find the power output needed from the sound system. Intensity is given by :
P = 20420.35 Watts
or
P = 20.4 kW
So, the power output needed from the sound system is 20.4 kW. Hence, this is the required solution.
For water, as the temperature goes up the density of the liquid water
decreases therefore it becomes less dense so it tends to rise upward.
And since the temperature here is higher, heat flows from the higher
temperature to the lower so it releases energy to the environment.
Therefore, the correct statements are 2, 3 and 5.
Answer:
16 times.
Explanation:
The rate of the radiation dose is , R = 200 ×10^{-3} rad/hr
Time consumed, t = 40 hr
The magnitude of Q.F for the neutrons, Q.F = 2
Thus the effective radiation dose is:
Thus, the effective dose allowable yearly = 16 times
Metal, phones, laptops, etc.
Two factors effecting the magnitude of the force of gravity between 2 objects are the masses and the distance
Explanation:
The magnitude of the gravitational force between two bodies is given by
where
:
is the gravitational constant
are the masses of the two bodies
r is the distance between them
We see therefore that the factors affecting the magnitude of the force of gravity between 2 objects are:
- The mass of the two objects. In particular, the force is proportional to the product of the masses - so the larger the masses, the stronger the force
- The distance between the two objects. In particular, the force is inversely proportional to the square of the distance between the objects - so the larger the distance, the weaker the force
Learn more about gravitational force:
brainly.com/question/1724648
brainly.com/question/12785992
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