Light travels at the same speed at all times. True False

Physics

2 answers:

topjm [15]3 years ago

6 0

Answer:

true hope this help :}

Explanation:

Airida [17]3 years ago

3 0

The answer is true for this

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Use force (thrust) equals mass times acceleration.

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A spring with spring constant 31 N/m is attached to the ceiling, and a 4.5-cm-diameter, 1.5 kg metal cylinder is attached to its

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Answer:

0.315758099469 m

Explanation:

m = Mass of cylinder = 1.5 kg

$\rho$ = Density of water = 1000 kg/m³

V = Volume = Ah

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k = Spring constant = 31 N/m

x = Displacement

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Here the forces are conserved

Weight of cylinder = Buoyant force + Spring force

$mg=\rho Vg+kx\\\Rightarrow mg=\rho Ahg+kx\\\Rightarrow 1.5\times 9.81=1000\times \pi(2.25\times 10^{-2})^2x\times 9.81+31x\\\Rightarrow 1.5\times 9.81=46.60213x\\\Rightarrow x=\dfrac{1.5\times 9.81}{46.60213}\\\Rightarrow x=0.315758099469\ m$

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4 years ago

Cells are visualized using light microscopes and electron microscopes. Which statement about microscopes is false. Group of answ

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Answer:

Light microscopes use light and glass objectives to illuminate and magnify objects

Explanation:

Light microscopes and electron microscopes are used to study cells. The electron microscope has many times more resolving power than the ordinary light microscope. A light microscope contains an objective lens and an eyepiece through which the final image is seen.

Both light and electron microscopes magnifies the image of the object. The magnifying power of an electron microscope is many times that of the light microscope.

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