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3 years ago

Characteristics of good thermometer

1 answer:

5 0

<h3>Characteristics: </h3><h3>the length of the stem, battery savers, varied choices on how to clean it thoroughly, the battery replacements, a good sensitivity to heat, and precise readings are the basics that classify thermometers as good-working. </h3>

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Can someone please help me with science.

alekssr [168]

Answer:

The answers to your questions are given below

Explanation:

22. The energy of an electromagnetic wave and it's frequency are related by the following equation:

E = hf

Where:

E => is the energy

h => is the Planck's constant

f => is the frequency

From the equation i.e E = hf, we can conclude that the energy of a wave is directly proportional to it's frequency. This implies that an increase in the frequency of the wave will lead to an increase in the energy of the wave and also, a decrease in the frequency will lead to a decrease in the energy of the wave.

23. Gamma ray and radio wave are both electromagnetic waves. All electromagnetic waves has a constant speed of 3×10⁸ m/s in space.

Thus, gamma ray and radio wave have the same speed in space.

3 0

3 years ago

Each piston of an engine makes a sharp sound every other revolution of the engine. How fast is a race car going if its eight-cyl

goldfiish [28.3K]

Answer:

93.75 m/s

Explanation:

Given:

The frequency of the sound = 750 Hz

The number of pistons making the sound = 8

Revolutions made by the engine = 2000 revolutions/ km

Thus,

the frequency of sound by 1 piston = 750 / 8 = 93.75 Hz

also, it is given that for every other revolution sound is made.

thus, for every 2 revolution sound is made

therefore,

Number of revolutions per second = 93.75 Hz × 2 = 187.5 rev/s

Now,

the speed of the car will be calculated as:

= Number of revolutions per second / Revolutions made by the engine

The speed of the car = $\frac{187.5\ rev/s}{2000\ rev/km}$

The speed of the car = 0.09375 km/s = 93.75 m/s

3 0

3 years ago

Help!!! Earth science !!!

goblinko [34]

Answer:

D
The same
b

Explanation:

$\frac{159.4}{59.7} = 2.67$
Because, well, science? Don't know how to explain
Because, well science again. Well, physics.

7 0

2 years ago

How big is the sun ☺️☺️

Klio2033 [76]

The sun is 1.989E30 kg. <em>It's radius is 695, 800 Km.</em>

4 0

3 years ago

Read 2 more answers

When an object is moving with uniform circular motion, what is the direction of the object’s centripetal acceleration?

natita [175]

The centripetal force and centripetal acceleration
both point toward the center of the circular path.

6 0

4 years ago