Distance is the length of a path followed by a particle. The displacement of a particle is defined as its change in position in
1 answer:
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Answer:
The final velocity
Explanation:
Given data
Mass of merry go round = 120 kg
Radius = 1.8 m
Initial angular velocity = 0.6
Mass of boy = 25 kg
We know that the final velocity is given by
Put all the values in above formula we get
This is the final velocity.
Answer:
Explanation:
We know that speed is defined as distance moved per unit time hence expressed as where v is speed in m/s, d is distance in m and t is time in seconds. Making d the subject of the above formula then
Substituting 343 m/s for d and 10 s for t then
Therefore, the distance between speaker and deter is
Answer : The correct option is, (d) 90 mL
Explanation :
First we have to calculate the volume of an object.
As we know that,
Given:
Density of an object = 0.25 g/mL
Mass of an object = 10 g
Now put all the given values in the above formula, we get:
Thus, the volume of an object is 40 mL.
Now we have to calculate the height of the water in the graduated cylinder rise.
As we are given that:
The volume of water in graduated cylinder = 50 mL
The volume of an object = 40 mL
The height of the water in the graduated cylinder rise = Volume of water in graduated cylinder + Volume of an object
The height of the water in the graduated cylinder rise = 50 mL + 40 mL
The height of the water in the graduated cylinder rise = 90 mL
Therefore, the height of the water in the graduated cylinder rise will be, 90 mL