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Basile [38]
3 years ago
13

Compare the gravity between these pairs, each consisting of an Earth-like planet and its star. You are given the mass of the pla

net in Earth masses, the mass of the star in Sun masses, and the distance in AUs.
4 MEarth / 2 MSolar / 3 AU
1 MEarth / 1 MSolar / 1 AU
1 MEarth / 2 MSolar / 2 AU
Physics
1 answer:
Maru [420]3 years ago
6 0

Answer:

The answer is below

Explanation:

Newton's law of gravity states that the force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The law is expressed by the formula:

F=G\frac{m_1m_2}{r^2} \\\\Where\ F=force,G=gravitational\ constant, m_1\ and\ m_1=mass\ of\ objects,r\ =distance\ between \ the\ two\ objects.

The masses and distances for this question is in common units, Therefore the result would be in ratios

a) 4 MEarth / 2 MSolar / 3 AU

The force (F) = (4 * 3) / 3² = 4/3

b) 1 MEarth / 1 MSolar / 1 AU

The force (F) = (1 * 1) / 1² = 1

c) 1 MEarth / 2 MSolar / 2 AU

The force (F) = (1 * 2) / 2² = 1/2

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A man is at a car dealership, looking for a car to buy. He looks at the sticker on the driver’s window of a car and sees that th
maxonik [38]

Answer:

he will see the sticker because its behind a window bruh and thats a big daddy stack of greens

Explanation:

3 0
3 years ago
What is ther atomic number of an element that has 2 electrons, 3 protons,<br> and 4 neutrons?
Bingel [31]

Answer:

9

Explanation:

A atomic number is the addition of every number

8 0
3 years ago
Consider a river flowing toward a lake at an average velocity of 3 m/s at a rate of 500m3/sat a location 90 m above the lake sur
olga_2 [115]

Answer:

mechanical energy per unit mass is 887.4 J/kg

power generated is 443.7 MW

Explanation:

given data

average velocity = 3 m/s

rate = 500 m³/s

height h = 90 m

to find out

total mechanical energy and power generation potential

solution

we know that mechanical energy is sum of potential energy and kinetic energy

so

E = \frac{1}{2}×m×v² + m×g×h    .............1

and energy per mass unit is

E/m =  \frac{1}{2}×v² + g×h

put here value

E/m =  \frac{1}{2}×3² + 9.81×90

E/m = 887.4 J/kg

so mechanical energy per unit mass is 887.4 J/kg

and

power generated is express as

power generated = energy per unit mass ×rate×density

power generated = 887.4× 500× 1000

power generated = 443700000

so power generated is 443.7 MW

3 0
3 years ago
Which language style would be most appropriate for the given situation?
polet [3.4K]

Answer:

informal language

Explanation:

you do not need to be formal! you are not at a business conference. technical is not needed either since you are not discussing the intricacies of your job or some computer language.

5 0
3 years ago
Which measurement is a potential difference?<br> A.115J<br> B.115V<br> C.115N<br> D.115C
borishaifa [10]

Answer:

B

Explanation:

Potential difference has a SI Unit of Volt and its symbol is <em>V</em>. Hence answer is <u>B</u>.

A is wrong as it has the unit Joule <em>(J)</em> which is the SI unit for energy.

C is wrong as it has the unit Newton <em>(N)</em> which is the SI unit for force.

D is wrong as it has the unit Coulomb <em>(C)</em> which is the SI unit of charge.

5 0
3 years ago
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