3 years ago

How do light microscopes differ from electron microscopes?

1 answer:

4 0

In light microscope, source is light whereas in electron microscope, source is electron.
Electron microscopes have very low wavelength as compared to light microscope, so it gives larger resolving power.

Hope this helps!

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Sound waves in air are a series of periodic disturbances, periodic condensations and rarefactions, and high- and low-pressure regions. It is all of the above. The answer is letter D.

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3 years ago

A 64.9 kg sprinter starts a race with an acceleration of 3.89 m/s2. She keeps this acceleration for 17 m and then maintains the

xxMikexx [17]

Answer:

Time of race = 10.18 s

Explanation:

She keeps this acceleration for 17 m and then maintains the velocity for the remainder of the 100-m dash

Time to travel 17 m can be calculated

s = ut + 0.5at²

17 = 0 x t + 0.5 x 3.89 x t²

t = 2.96 s

Velocity after 2.96 seconds

v = 3.89 x 2.96 = 11.50 m/s

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Time required to cover 83 m with a speed of 11.50 m/s

$t=\frac{83}{11.50}=7.22s$

Time of race = 2.96 + 7.22 = 10.18 s

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3 years ago

A bookcase has a base of 1 m long and 0.5 m wide. It has a mass of 300kg. Find the pressure it exerts on the floor in kPa.

Snezhnost [94]

$1m*0.5m=0.5m^2\\
g=10\frac{m}{s^2}\\
300kg*10\frac{m}{s^2}=3000N\\
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3 years ago

We observe a glowing cloud of gas in space with a spectroscope. We note that many of the familiar lines of hydrogen that we know

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Answer:

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3 years ago

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