Answer: search it on browser
Answer:
The number of moles of the air is 4.464 x 10⁻⁴ mole
The number of molecules is 2.688 x 10²⁰ molecules
Explanation:
Given;
pressure of the air, P = 1 atm
volume of the air, V = 1 m³
temperature of the air, T = 0° C = 273 K
The number of moles of the air is calculated as;
PV = nRT
where;
n is the number of moles
R is ideal gas constant = 8.2057m³atm/mol.k
The number of molecules is calculated as follows;
1 mole ---------------------> 6.022 x 10²³ molecules
4.464 x 10⁻⁴ mole ----------> ?
= (4.464 x 10⁻⁴) (6.022 x 10²³ molecules)
= 2.688 x 10²⁰ molecules of air.
What is the work done in stretching a spring by a distance of 0.5m if the restoring force is 48N is 12 J.
Hooke's Law states that the more you deform a spring, the more force it will take to deform it further.
Notations: F= Restoring force
k= spring constant
x = spring displacement
Given: F = 48N,
x= 0.5m
By using Formula; F= kx
F = 48 = kx, k = F/x
k = 48/0.5 = 96 N/m
work done by spring = 1/2 (kx)² = 1/2(96x0.5)² = 12 J
work done by spring is 12J.
Learn more about the Hooke's law with the help of the following link:
brainly.com/question/2449067
#SPJ4
Answer: The force you exert on the handle of a screen door as you open the door is on the order of 10 N. The force exerted by a honeybee as it lands on a flower is on the order of 0.001 N. The thrust force produced by the engines of a passenger jet as it takes off is on the order of 100,000 N. The weight of the largest aircraft carriers is on the order of 1,000,000,000 N.
Explanation:
In the first case, force made by hands and arms movement is in the range of 1 or 10N. In the second case, we are talking of a honeybee, an insect that weighs grames. The third case is the force required to make a plane take off (it is %10 of the thrust force of a plain with a weight of 300000N to 1000000N). In the last case, we are talking of the largest aircraft carriers, steel monsters that weight thousand of tons.