-GMm/2r is the total energy of the mass m if it is in a circular orbit about mass M.
Given
A particle of mass m moving under the influence of a fixed mass's M, gravitational potential energy of formula -GMm/r, where r is the separation between the masses and G is the gravitational constant of the universe.
As the Gravity Potential energy of particle = -GMm/r
Total energy of particle = Kinetic energy + Potential Energy
As we know that
Kinetic energy = 1/2mv²
Also, v is equals to square root of GM/r
v = √GM/r
Put the value of v in the formula of kinetic energy
We get,
Kinetic Energy = GMm/2r
Total Energy = GMm/2r + (-GMm/r)
= GMm/2r - GMm/r
= -GMm/2r
Hence, -GMm/2r is the total energy of the mass m if it is in a circular orbit about mass M.
Learn more about Gravitational Potential Energy here brainly.com/question/15896499
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P=IV, where P is power, I is resistance, and V is voltage. Plug in and solve:
P=400(20)
P=8000W
Hope this helps!!
Answer:
288.2 K
Explanation:
= Volumetric expansion coefficient = ![1120\times 10^{-6}\ /K](https://tex.z-dn.net/?f=1120%5Ctimes%2010%5E%7B-6%7D%5C%20%2FK)
= Initial temperature = 273.1 K
= Final temperature
= Original volume = 150 mL
Change in volume is given by
![\Delta v=\beta v_0(T_f-T_i)\\\Rightarrow T_f=\frac{\Delta v}{\beta v_0}+T_i\\\Rightarrow T_f=\frac{150-147.5}{1120\times 10^{-6}\times 147.5}+273.1\\\Rightarrow T_f=288.2\ K](https://tex.z-dn.net/?f=%5CDelta%20v%3D%5Cbeta%20v_0%28T_f-T_i%29%5C%5C%5CRightarrow%20T_f%3D%5Cfrac%7B%5CDelta%20v%7D%7B%5Cbeta%20v_0%7D%2BT_i%5C%5C%5CRightarrow%20T_f%3D%5Cfrac%7B150-147.5%7D%7B1120%5Ctimes%2010%5E%7B-6%7D%5Ctimes%20147.5%7D%2B273.1%5C%5C%5CRightarrow%20T_f%3D288.2%5C%20K)
The temperature of the ethyl alcohol should be 288.2 K to reach 150 mL
Answer:
The primary purpose in creating national parks is to protect the land from development and pollution.
Explanation:
National parks are owned by the national government. This areas are strictly reserved for habitat of wild animals.
The main purpose for creating national parks is to reserve some space for nature. This area is protected from pollution and development.
Thus, answer for given question is protect the land from development and pollution.
Answer:
a loud explosive noise caused by the shock wave from an aircraft traveling faster than the speed of sound.
Explanation: