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diamong [38]
3 years ago
8

All Physicsts over here plz help in these questions!!!!!!!!!

Physics
2 answers:
mrs_skeptik [129]3 years ago
6 0
Hello!

First one we can use that PE=mgh so we have

4.37*10^5J/(9.12*10^3kg*9.80m/s^2)= 4.89m

Second one we can use Newton’s Second Law
F=ma and in this case F=mg so we have

g= 3.28*10^-2N/6*10^-3kg = 5.47m/s^2

Hope this helps. Any questions please ask. Thank you.
Vinil7 [7]3 years ago
6 0

1. Answer: Height = 4.8 m

Gravitational potential energy, P.E. = mgh

where, m is mass of the body, g is the acceleration due to gravity and h is the height.

It is given that, location is on Earth.

P.E. =4.37\times 10^5 J\\ m=9.12 \times 10^3 kg\\ g=9.8 m/s^2

\Rightarrow h=\frac{P.E.}{mg}=\frac{4.37\times 10^5 J}{9.12 \times 10^3 kg \times 9.8 m/s^2}=4.8 m

2. Answer: 5.46m/s^2

Weight is a force which an object exerts due to its mass under gravity.

weight = mass × acceleration due to gravity

⇒ acceleration due to gravity = weight/ mass

It is given that the weight, w= 3.28\times 10^{-2} N

mass of the object, m=6\times 10^{-3} kg

\Rightarrow a=\frac{w}{m}=\frac{3.28\times 10^{-2} N}{6\times 10^{-3} kg}=5.46 m/s^2


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General Characteristics of Acids & Bases. Chemists measure the strength of an acid or base by its pH, which is a term that refers to the "power of hydrogen.". The midpoint of the pH scale is neutral. Compounds with a pH lower than the midpoint value are acidic while those with a higher value are basic or alkaline.

7 0
3 years ago
Give at least two reasons today’s astronomers are so interested in the discovery of additional Earth-approaching asteroids.
blondinia [14]

Answer:

1. Potential hazard

2. Mining opportunity

Explanation:

The two reason, why astronomers are so interested in the discovery of additional Earth-approaching asteroids:

1. Potential hazard: We have proof that the dinosaurs got extinct because of an asteroid/comet strike on Earth. Also we have seen the effects of the Tunguska event and Chelyabinsk tragedy. These are enough to show us that asteroids can be very dangerous and wipe out the life from Earth.

2. Mining Opportunity: We have discovered a lot of asteroids which contains a lot of metal and precious elements. There can be a possibility of mining such asteroids in the future and reducing the burden on Earth.

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3 years ago
A slab of glass 8.0 cm thick is placed upon a printed page. If the refractive index of the glass is 1.5, how far from the surfac
7nadin3 [17]

Answer:

5.3 cm

Explanation:

This question is an illustration of real and apparent distance.

From the question, we have the following given parameters

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The relationship between R, A and μ is:

μ = R/A

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Refractive Index = Real Distance ÷ Apparent Distance

Substitute values in the above formula

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Multiply both sides by A

1.5 * A = A * 8/A

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1.5A/1.5 = 8/1.5

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8 0
2 years ago
What is (a) the wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz?
yulyashka [42]

The wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz will be  31.25 * 10^{2} m^{-1} and 0.032 * 10^{2} m respectively

Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength.

Wavenumber, also called wave number, a unit of frequency, often used in atomic, molecular, and nuclear spectroscopy, equal to the true frequency divided by the speed of the wave and thus equal to the number of waves in a unit distance.

wavelength = ?

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wavenumber = 1 / wavelength

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To  learn more about electromagnetic radiation here

brainly.com/question/10759891

#SPJ4

5 0
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From the mass spectrum of the compound, the molecule was determined to have a molar mass of 907 g/mol. what is its molecular for
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Please elaborate more on your question so I can help you
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