What resource is used to make fertilizers and other products such as toothpaste and insecticides?
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So, the time needed before you hear the splash is approximately <u>2.06 s</u>.
<h3>Introduction</h3>Hi ! In this question, I will help you. This question uses two principles, namely the time for an object to fall freely and the time for sound to propagate through air. When moving in free fall, the time required can be calculated by the following equation:
With the following condition :
- t = interval of the time (s)
- h = height or any other displacement at vertical line (m)
- g = acceleration of the gravity (m/s²)
Meanwhile, for sound propagation (without sound reflection), time propagates is the same as the quotient of distance by time. Or it can be formulated by :
With the following condition :
- t = interval of the time (s)
- s = shift or displacement (m)
- v = velocity (m/s)
We know that :
- h = height or any other displacement at vertical line = 19.6 m
- g = acceleration of the gravity = 9.8 m/s²
- v = velocity = 343 m/s
What was asked :
= ... s
Step by step :
- Find the time when the object falls freely until it hits the water. Save value as
- Find the time when the sound propagate through air. Save value as
- Find the total time
So, the time needed before you hear the splash is approximately 2.06 s.
Answer:
(A) ratio of electric force to weight will be
(b) Electric field will be
Explanation:
We have given mass of bee = 100 mg =
Charge on bee
Electric field E = 100 N/C
Weight of the bee
Electric force on the bee
So the ratio of electric force on the bee and weight is
(B) To hold the bee in air electric force must be equal to weight of bee
So