What is the main unit in metric system?

________ is described as the pulling force transmitted by the means of a

marta [7]

Answer:

it should be tension for the space

8 0

3 years ago

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Which two aspects of sound go together?

Varvara68 [4.7K]

Which two aspects of sound go together?

Pitch and frequency

Pitch and frequency are two aspects of sound that go together. Pitch means Higness or Lowness of sound. Frequency is the measurement of the number of times that a repeated event occurs per unit of time...~

4 0

3 years ago

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The ratio of the wavelength of AM radio waves traveling in a vacuum to the wavelength of FM radio waves traveling in a vacuum is

Debora [2.8K]

This question is a big fat non sequitur !

The wavelength of radio waves traveling through vacuum only depends on the frequency that the radio station is licensed to broadcast on, (which had better be the frequency of the transmitter that they buy and use, or they're in big trouble).

The wavelength does NOT depend on the type of modulation that's used to put information onto the signal.

An amateur radio (ham) operator may very well start out using FM to talk over his radio to somebody else, and then for some reason they may decide to switch to AM. They can do that without ANY change in the wavelength of their transmissions.

Now, in the USA and many other countries, it so happens that all AM stations are licensed by their governments to transmit their programs on a channel somewhere between 500 KHz and 1.6 MHz, and all FM stations are licensed by their governments to transmit their programs on a channel somewhere between 88 MHz and 108 MHz. (And THAT's what the radio receivers in these countries are built to receive.)

Then we might say that all of the AM stations are grouped around 1 MHz, and all of the FM stations are grouped around 100 MHz. The FM frequencies are very roughly 100 times the AM frequencies, so the AM wavelengths are very roughly 100 times the FM wavelengths. That's choice (3) .

But please don't get the idea that it has anything to do with using AM or FM technology. It's just a matter of where in the spectrum the government decided to put the AM stations and where they put the FM stations.

For that matter . . . An analog TV station uses an AM signal for the picture and an FM signal for the sound, and it all goes in the same channel, with just about the same wavelengths !

3 0

3 years ago

A 7.30-kg bowling ball is on a storage rack that is 1.12 m above

Marina CMI [18]

Answer:

80.12J

Explanation:

Given parameters:

Mass of the bowling ball = 7.3kg

Height of the storage rack = 1.12m

Unknown:

Energy the ball would have exerted = ?

Solution:

To solve this problem, the potential energy is the best parameter to use.

Potential energy is the energy due to the position of a body. It is expressed as:

Potential energy = mass x gravity x height

So;

Potential energy = 7.3 x 9.8 x 1.12 = 80.12J

6 0

3 years ago

-4.5 m\s indicates that an object is traveling

a_sh-v [17]

Neither the opposite direction (left) or its slowing down. Hope this helps

8 0

4 years ago