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3 years ago

An instrument for observing very small objects is

1 answer:

6 0

Microscope
A microscope shines a light through a slide with the sample of the object on and you look through a lens that allows you to magnify it by a very significant amount depending on what kind of microscope you have (a powerful electron microscope can magnify to the atomic level).

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Is the the last half of the month waxing or waning( talking about moon phases

rewona [7]

Its not really definable. Say, you can have a full moon on the last day of November, and have the waning phases throughout the first half. Or you can have a new moon on the last day of December, and have the waxing phases during the first half of the month.
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5 0

3 years ago

5. What is the amplitude of the waves shown in the diagram below?

Nitella [24]

Answer:

0.54 m

Explanation:

Example below.

3 0

3 years ago

When an object is electrically polarized

marta [7]

Answer:

One side is more positive, the other is more negative

Explanation:

When an atom is electrically polarized, it means that one side has more electrons than the other. This makes one side more negative as it has more electrons than the other. I hope this helps!

5 0

3 years ago

Which is the appropriate unit of measurement for pitch?

malfutka [58]

Hertz Pitch and frequency

6 0

3 years ago

A crane used 250,000 Joules of work to move a beam to the top of a building in 20 seconds. How much power did the crane use?

maria [59]

Answer:

12500W

Explanation:

Given parameters:

Work done = 250000J

Time taken = 20s

Unknown:

Power of the crane = ?

Solution:

Power is the defined as the rate at which work is being done;

Mathematically;

Power = $\frac{work done}{time }$

insert the parameters and solve;

Power = $\frac{250000}{20}$ = 12500W

7 0

3 years ago