Answer:
320 N/m
Explanation:
F = k·Δx
where
F is the restoring force of the spring
k is the proportionality constant called the ‘spring constant’
Δx is the change in the spring’s position due to the deformation.
You need the k so
25 cm= 0.25m
k=F/∆x = 80/0.25 = 320 N/m
Answer: 21965.517 Pa
Explanation:
Pressure
is the force
exerted by a gas, a liquid or a solid on a surface (or area)
, its unit is Pascal
which is equal to
and its formula is:
(1)
In this case we have the surface of a sole of a tennis shoe:
(2)
And the mass
of the person who wears it:
On the other hand, we know the weight is the force
the Earth exerts on people and objects due gravity
:
(3)
Substituting (2) and (3) in (1):
(4)
Finally:
This is the pressure the shoe exert on the ground
Answer:
from Late Latin convectionem
Explanation:
The answer true I’m guessing. It’s a 50/50 chance
Answer:
The maximum speed will be 26.475 m/sec
Explanation:
We have given mass of the toy m = 0.50 kg
radius of the light string r = 1 m
Tension on the string T = 350 N
We have to find the maximum speed without breaking the string
For without breaking the string tension must be equal to the centripetal force
So 
So 

v = 26.475 m /sec
So the maximum speed will be 26.475 m/sec