Answer:
a, 7.26kg
b, 36.59N
Explanation:
The question says it swings like a pendulum, as such, we would use the formula for circular acceleration.
a = v²/r
a = 4.2²/3.7
a = 17.64/3.7
a = 4.77m/s²
The acceleration of the ball is directed towards the centre because circular acceleration is usually directed towards the centre
To find tension, recall, F = ma
m = F/a
m = 71.2/9.81
m = 7.26kg
In solving for tension then, we use our acceleration to be (9.81 - 4.77) = 5.04m/s²
Tension = ma
Tension = 7.26 * 5.04
Tension = 36.5904
Hence the tension in the rope is 36.59N
<span>Acceleration of ball (a) = 9.8 m/s^2
Speed (v) = 24.5 m/s
Time (t) = Acceleration / Time
= v / a
= 24.5/9.8
= 2.5 s
So it will take 2.5 seconds to reach that speed.</span>
Answer:
d. Relative humidity increases.
Explanation:
The expression of relative humidity in terms of absolute humidity, absolute pressure and saturation pression at measured temperature is:

When temperature decreases, the saturation pressure decreases also and, consequently, relative humidity increases. Therefore, the right answer is option D.
Answer:
Nuclear reaction is a reaction in which nucleus of the atom undergoes a change.
Nuclear fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.
Example :
Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.
Example: