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3 years ago

Which of the following statements about mass and weight is true?

Physics

2 answers:

lyudmila [28]3 years ago

5 0

Answer:

B weight measures the force of gravity on an object and mass measures the amount of matter an object contains.

Explanation:

Stells [14]3 years ago

4 0

Answer:

Explanation:

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which of the following are vector quantities? check all that apply. a. acceleration b. mass c. displacement d. force

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All are vector quantities except b. mass

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The topsoil layer has the greatest concentration of organic matter. The subsoil generally lacks organic matter, but it does rece

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C. the C horizon likely has a rockier texture than the topsoil and subsoil.

Explanation:

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3 years ago

The object has a redshift of 7.6 and the JWST observes the object at a wavelength of 2 microme-

olasank [31]

b. The wavelength of light emitted by the object is 233 nm

c. The type of radiation originally emitted by the object is ultraviolet radiation.

To find the wavelength, we need to know what redshift is.

<h3>What is redshift?</h3>

Redshift is the increase in wavelength and the corresponding decrease of frequency and photon energy of electromagnetic radiation.

Redshift is given by z = λ'/λ - 1 where

λ' = observed wavelength and
λ = emitted wavelength.

Making λ subject of the formula, we have

λ = λ'/(1 + z)

Given that has a redshift of 7.6 and the JWST observes the object at a wavelength of 2 micrometres (mid-infrared light).

So,

z = 7.6 and
λ' = 2μm

<h3>(b) What is the wavelength of the light emitted by the object?</h3>

Substituting the values of the variables into the equation, we have

λ = λ'/(1 + z)

λ = 2μm/(1 + 7.6)

λ = 2μm/8.6

λ = 0.233 μm

λ = 233 nm

So, the wavelength of light emitted by the object is 233 nm

<h3>c. What type of radiation was originally emitted by the object?</h3>

Since the wavelength is 233 nm and the wavelength is in the range of ultraviolet radiation 200 nm - 315 nm.

So, the type of radiation originally emitted by the object is ultraviolet radiation.

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3 years ago

At a maximum level of loudness, the power output of a 75-piece orchestra radiated

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3 years ago

8. The moon has about 1/6th the gravity of the Earth. How would the potential energy of an object be different on the moon if it

topjm [15]

The potential energy on the moon would be 1/6 of the potential energy on Earth

Explanation:

The potential energy of an object is the energy possessed by the object due to its position in a gravitational field, and it is given by

$PE=mgh$

where

m is the mass of the object

g is the strength of the gravitational field

h is the height of the object above the ground

In this problem, the potential energy of the object on the Earth is

$PE=mgh$

On the Moon, the gravity is

$g'=\frac{1}{6}g$

Therefore, if the same object (same mass) is placed at the same height $h$ on the Moon, its potential energy would be

$PE' = m(\frac{1}{6}g)h = \frac{1}{6}(mgh) = \frac{1}{6}PE'$

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3 years ago