Answer:
The value is 
Explanation:
From the question we are told that
The volume of liquid nitrogen is 
The density of nitrogen at gaseous form is
= The dry air at sea level
Generally the density of nitrogen at liquid form is

And this is mathematically represented as

=> 
Now the density of gaseous nitrogen is

=> 
Given that the mass is constant


=> 
2000J
Explanation:
Given parameters:
Extension = 0.5m
Spring constant = 16000N/m
Unknown:
Energy stored in the bow string = ?
Solution:
The energy stored in a bow string is an elastic potential energy.
It can be calculated using the expression below;
Elastic energy =
K e²
Where k is the spring constant
e is the extension
Input the parameters;
Elastic energy =
K e²
=
x 16000 x 0.5²
= 2000J
learn more:
Potential energy brainly.com/question/10770261
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Answer:
2.2kg
Explanation:
kilograms is a measurement of mass so the answer is 2.2kg
Answer: 50 m/s
Explanation: speed v = 2· pi·n·r = 2· 3.14· 2 s^-1· 4 m
Answer:
23.49m
Explanation:
Distance = velocity x time
8.7 x 2.7 = 23.49m