Answer:
<em>Digital clock is the most precised one</em>
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Explanation:
Answer:
Hey buddy, here is your answer. Hope it helps you.
Explanation:
Yes, weight of a body is not constant, it varies with the value of acceleration due to gravity, g. Weight of a body is zero, when it is taken to the centre of the earth or in the interplanetary space, where g=0. Mass is the total matter in a body, while weight is the force by which the body is attracted.
Weight is never constant while mass is. So we can have weight zero but with some mass. This will happen when an object is at the centre of earth, as g=0 at centre of earth , so weight will be 0 while mass will always be constant everywhere
Answer:
511.545 Newtons
Explanation:
So 1 pound=4.44822 Newton’s so 115 times 4.44822 is 511.5453, then round it to get 511.545 Newtons.
Answer:
θ = 68.9º
Explanation:
The equation that governs the process of light passing through a polarizer is described by Malus's law
I = I₀ cos² θ
Where I is the transmitted intensity, I₀ is the incident intensity and TE is the angle between the light and the polarizer
If i is 0.13I₀, we substitute in the equation
0.13 Io = I₀ cos² θ
Cos² θ = 0.13
Cos θ = √ 0.13
θ = cos⁻¹ (0.36056)
θ = 68.9º
Lubricating a machine will make it more efficient and it will reduce the friction between the parts meaning that less energy will be transferred and dissipated into the surroundings as heat.
the in put and out put force may increase as it's easier for the machine to work due to less friction