The sun is called a 'dwarf star' you see, yellow stars are small. The sun is a yellow dwarf star. Also, typically red dwarf stars are cool, small, and very faint stars.
Refer to the diagram shown below.
μ = 0.2. the coefficient of dynamic friction
N = mg cosθ, the normal reaction
μN = μmg cosθ, the frictional force resisting motion down the inclined plane.
mg sinθ = the force driving the block down the inclined plane.
Because the block slides down the inclined plane with constant velocity, it is in dynamic equilibrium.
Therefore
mg sinθ = μmgcosθ
tanθ = μ = 0.2
θ =tan⁻¹ 0.2 = 11.3°
Answer: 11.3°
The Sun shines on the moon which then shines back on the earth. Also the stars but thats very minimal
Answer:
question 1: force
question 2: velocity or inertia
question 3: 0
If no frictional work is considered, then the energy of the system (the driver at all positions is conserved.
Let
position 1 = initial height of the diver (h₁), together with the initial velocity (v₁).
position 2 = final height of the diver (h₂) and the final velocity (v₂).
The initial PE = mgh₁ and the initial KE = (1/2)mv₁²
where g = acceleration due to gravity,
m = mass of the diver.
Similarly, the final PE and KE are respectively mgh₂ and (1/2)mv₂².
PE in position 1 is converted into KE due to the loss in height from position 1 to position 2.
Therefore
(KE + PE) ₁ = (KE + PE)₂
Evaluate the given answers.
A) The total mechanical energy of the system increases.
FALSE
B) Potential energy can be converted into kinetic energy but not vice versa.
TRUE
C) (KE + PE)beginning = (KE + PE) end.
TRUE
D) All of the above.
FALSE