The value of the diameter of the hydrogen atom as we have it in this experiment is accurate because it is very close to the true value.
<h3>What is accuracy?</h3>
The term accuracy refers to how close the measured value is to the true value. The true value is the same as the accepted value. In this case, the true value of the diameter of a Hydrogen atom is 10 nm.
The fact that is observed value is obtained to be 10.1 nm implies that the value of the diameter of the hydrogen atom as we have it in this experiment is accurate because it is very close to the true value.
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Because of ash clouding the sky, blocking sunlight for a while.
Answer:
-A.
Explanation:
: Hope it's Help:
[correct me if I'm not correct]
Answer:
13 km/h
Explanation:
Average speed = distance/time
Let the total distance and total time taken for the whole trip be d km and t hours respectively
Average speed for the whole trip = 82 km/h
d = 82t
The distance covered in the first half = d1/2
Time taken = t/2
Average speed = 69 km/h
69 = d1/2 ÷ t/2
d1 = 69t
The distance covered in the second half = d2/2
Time taken = t/2
Let the average sly for the see half be A
A = d2/2 ÷ t/2
d2 = At
d = d1 + d2
82t = 69t + At
At = 82t - 69t
At = 13t
A = 13t/t = 13 km/h
Answer: 1687.5 N
Explanation:
From the second law of motion given by Newton, Force is the rate change of momentum.

Mass of the baseball, m = 0.15 kg
Initial velocity,
(negative because direction of initial velocity is opposite to the final velocity)
Final velocity, 
The duration of collision, 
Force, 
Hence, the value of force is 1687.5 N.