Explanation:
We will calculate the gravitational potential energy as follows.
=
= 1164000 J
or, = 1164 kJ (as 1 kJ = 1000 J)
Now, we will calculate the change in potential energy as follows.
=
=
= -873000 J
or, = -873 kJ
Thus, we can conclude that change in gravitational potential energy is -873 kJ.
Answer:
2.17 x 10^8 m/s
Explanation:
Angle of incidence, i = 30 degree, refractive index of mineral oil, n = 1.38
Let r be the angle of refraction.
By use of Snell's law
n = Sin i / Sin r
Sin r = Sin i / n
Sin r = Sin 30 / 1.38
Sin r = 0.3623
r = 21.25 degree
Let the speed of light in oil be v.
By the definition of refractive index
n = c / v
Where c be the speed of light
v = c / n
v = ( 3 x 10^8) / 1.38
v = 2.17 x 10^8 m/s
Answer:
Tension.
Explanation:
The tighter a string is, the more tension is applied to it; the more loose a string is, less tension is applied to it.
Therefore, when you adjust the tightness of a string you are tackling with it's tension.
Hope it helped,
BiologiaMagister
Answer:
Carbon dioxide (CO2) extinguishers contain a mixture of liquid and gaseous carbon dioxide (a nonflammable gas). CO2 is normally a gas at room temperature and pressure. It has to be stored under high pressure to make it a liquid. When you release the pressure, the gas expands enormously and makes a huge white jet.
Explanation:
hope this helps
Answer:
I wasn't sure what you really need so i listed all of them if they are not what you are looking for please tell me for me to correct it.Hope this help ;)
Explanation:
VF VI t mean
a= Vf - Vi /t. acceleration = final velocity - initial velocity divided by time.
d= Vi x t + at2/2 The final velocity is zero
the last two i couldn't solve but i will try my best to finish those.