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4 years ago

Which statement is an example of determining the relative age?

Physics

1 answer:

const2013 [10]4 years ago

4 0

knowing the age of a grandmother because she was a kid during the Great Depression

Explanation:

The best example for relative age is simply knowing the age of a grandmother because she was a kid during the Great Depression. Relative age is usually based on the occurrence of a popular and world wide event. It is not an absolute age that gives numerical and quantitative values to age.

The reference here is the Great Depression
The Grandmother was kid during this period in time.
We can use this knowledge to infer her age.
Since she was a kid at that point, her current age would how far back the depression was and an estimate of her age at that time.

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Absolute radiometric dating brainly.com/question/1695370

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What is static electricity

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Static electricity is electricity produced locally that does not flow. It is produced by electrons being rubbed off one object and collecting on another. It cannot flow through a wire like the electricity in your home.

Example:

1) Rub a balloon on your hair and it will stick to the wall. The balloon rubs electrons off your hair and picks up a negative charge. Your hair, in turn, is left with a positive charge. You may even notice your hair has "static" and is standing out from your head.

2) Comb your hair with a plastic comb then use it to pick up small pieces of paper. The comb picks up electrons from your hair and becomes negatively charged. It uses this charge to attract the pieces of paper.

3) Rub your slippered feet on the carpet and then touch something metal like a door knob. The "shock" you feel is static electricity. You pick up electrons from the carpet and discharge them on to the door knob.

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3 years ago

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What do you mean by average velocity

mina [271]

Answer:

Here is the answer. Hope this helps you!

Explanation:

Average velocity is the sum of initial and final velocity divided by 2. I t is the same as total Displacement divided by total time. Average velocity is calculated when the body is in non-uniform motion (also when total displacement and time is not given). The formula is as follows:

u + v/2 = $v_{av}$

Average velocity = Average speed

during motion in a straight line. therefore, the above mentioned formula can be used for calculating average speed as well, when the direction is one and only the same, that is, during motion in a straight line. The S.I unit remains the same-

m/s.

Since velocity is vector, average VELOCITY is also vector. However, Average SPEED is scalar as speed is scalar. both can be equal only when the distance = displacement and when they are following the same direction of motion.

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3 years ago

A solenoid with a ferromagnetic core is

Ivenika [448]

<span>A coil of current - carrying wire that produces a magnetic field is called a solenoid. An ? is a solenoid with a ferromagnetic core. ?, a device that uses a solenoid to measure small amounts of current. An ? motor is a device that uses an electromagnet to turn an axle.</span>

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3 years ago

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An ice-skater is moving at a constant velocity across an icy pond, The skater throws a snowball directly ahead.

Murljashka [212]

Answer:

(D) It is equal to the original velocity of the skater.

Explanation:

The velocity of the center of mass of a system is

$\vec{v}_{cm} = \frac{m1\vec{v}_1 + m_2\vec{v}_2}{m_1 + m_2}$

The velocity of the center of mass is constant if there is no external force, because the total momentum of the whole system is conserved.

So, before the snowball is thrown, the velocity of the center of mass is equal to that of the skater. This velocity will always be equal to the velocity of the center of mass of the system.

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4 years ago

Yellow light of wavelength 590 nm passes through a diffraction grating and makes an interference pattern on a screen 80 cm away.

riadik2000 [5.3K]

Answer:B

Explanation:

Given

Wavelength of light $\lambda =590\ nm$