Answer:
1.5g/cm³
Explanation:
Given parameters:
Initial volume of the liquid = 30cm³
Final volume of the liquid = 50cm³
Mass of the liquid = 30g
Unknown:
Density of the liquid = ?
Solution:
Density is the mass per unit volume of a substance.
Density =
volume of the liquid = final volume - initial volume = 50cm³ - 30cm³
volume of the liquid = 20cm³
Density = = 1.5g/cm³
Answer:
The speed is 13 m/s
Explanation:
In this problem, we have two reference frames:
- The reference frame of the observer on the ground, O
- The reference frame of the observes on the train, O', moving with velocity with respect to O (here we have taken north as positive direction, so since the train is moving south, we wrote it as a negative number)
For the observer on the ground, O, Sydney is moving with velocity
(positive because it's moving north)
So, we can find Sydney's velocity with respect to the frame O' as follows
So, the camera crew on the train observe Sydney moving at 13 m/s north
First you have to find the work, to do that, you have multiply the power and time.
56 x 19 = 1064 J
By doing this, you have the work. To find the distance, you have to divide the work by the force.
1064/46 = 23.13043478 m
You can round this answer to 23.13 m
Answer:
I think it is gas.
PLEASE MARK ME BRAINLIEST