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lakkis [162]
3 years ago
8

The earth exerts a force of 500 newtons on an object what is the mass of the object in kg

Physics
1 answer:
guajiro [1.7K]3 years ago
5 0

 Weight (that's what the 500 N is) = (mass) x (gravity) .

On Earth, gravity = about 9.8 m/s² , so

                                 500 N = (mass) x (9.8 m/s²) .

Divide each side by 9.8 m/s²: 

                                 Mass = (500 N) / (9.8 m/s²)

                                          =    51 kg  (rounded) .
 


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I need help getting started with number 8.
ratelena [41]

In #8, the distance and the (magnitude of displacement) are equal, because he crawled in a straight line.

Displacement = (straight-line distance from start-point to end-point) in the direction from start to end, regardless of what route was actually followed.

Displacement = 5m, in the negative direction.

In #9 . . . distance will be the same.  Displacement is going to be the same magnitude, but in the positive direction.

This is so simple that it's hard to talk about.  

In #8, "What was the bug's distance ?". "Distance was 5 meters.".  "What was the bug's displacement ?", "Displacement was 5 meters backwards."

In #9, What was the bug's distance ?". "Distance was 5 meters.".  "What was the bug's displacement ?", "Displacement was 5 meters forward."

4 0
2 years ago
The second ionization energy is the energy required to remove the _______ Electron after a __________ one has been removed.
Sindrei [870]

The second ionization energy is the energy required to remove the <u>second </u>electron after a <u>valence</u> one has been removed.

<h3><u>Explanation:</u></h3>

For an element, the first ionization energy is defined as the amount of energy required to remove one electron from the outermost valence shell of a neutral atom. Removing one electron increases the number of protons, making it a 1+ ion.  

The nucleus (protons) has more bonding to the electrons with negative charge and thus more energy is required if another electron needs to be removed. This higher energy required to remove second electron from a 1+ ion (after the first one has been removed) is termed as the second ionization energy. Second ionization energy leads to formation of a 2+ ion. Similarly, third ionization energy is higher than second ionization energy.

6 0
3 years ago
A ball is launched from ground level and hits the ground again after an elapsed time of 4 seconds and after traveling a horizont
Mumz [18]

Answer:

a. It is constant the whole time the ball is in free-fall

Explanation:

If we divide the movement on its vertical and horizontal components, and we concentrate on the vertical component, let's call x-component, and analyze Newton's second's law:

\sum\overrightarrow{F_{x}}=m\overrightarrow{a_{x}}

with \sum\overrightarrow{F_{x}}, a_{x} the acceleration on horizontal direction and m the mass of the ball, because the only force acting on the object is gravity that is always vertical, there're not forces on the horizontal direction that means \sum\overrightarrow{F_{x}}=0 and by (1) that implies a_{x}=0 there's not acceleration on horizontal direction.

Because acceleration is the rate at what velocity changes and there's no acceleration, there's no change in velocity, in other words velocity is constant on horizontal direction.

6 0
3 years ago
The part of a circult that increases the electric potential of the electrons is the
Tanya [424]

Answer:

The part of a circuit that increases the electric potential of the electrons is the battery.

6 0
3 years ago
Read 2 more answers
What is the angle of refraction when a ray of light passes from ethanol to air if the incident angle is 34? The refractive index
marin [14]
From Snell's Law;
n₁sinθ₁ =n₂sinθ₂
Therefore; since the ray is travelling from ethanol to air, then n1 = 1.36 and 
θ1 = 34, while n2= 1.00
(1.36) sin 34 = (1.00) sin θ₂
  sin θ₂ = 0.7605
        θ₂ = 49.50
             ≈ 49 °
The angle of refraction is therefore 49 degrees
5 0
3 years ago
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