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PtichkaEL [24]
3 years ago
14

What is a constant variable?

Physics
2 answers:
alexandr1967 [171]3 years ago
8 0
A variable that remains constant (or doesn't change) throughout an experiment.
Bad White [126]3 years ago
5 0
A constant variable; controlled variable is a variable that remains 'the same' throughout the experiment, though other variables may change
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Which formula is used to calculate the mass of an object if the force and acceleration are known? m = Fa m = m = m = F – a
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I'm pretty sure it is m = Fa
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I NEED ANSWERS!
Neporo4naja [7]

Answer:

A water fall?

Explanation:

It's an example I took in my science class

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Liquid helium has a temperature of 4k what is the temperature on celsius and fahrenheit
lesya692 [45]

Answer:

Explanation:

4K

°C = K - 273

= 4 - 273

= - 269 °C

° F = 9/5 (K - 273) + 32

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3 years ago
A large airplane typically has three sets of wheels: one at the front and two farther back, one on each side under the wings. Co
Tems11 [23]

(a) The force the ground exerts on each set of rear wheels when the plane is at rest on the runway is 0.743 MN.

(b) The force the ground exerts on the front set of wheels is 0.239 MN.

<h3>Center mass of the airplane</h3>

The concept of center mass of an object can be used to dtermine the mass distribution of the airplane along the line through the center.

<h3>Some assumptions</h3>
  • The wheels under the wind do not pass through the center line.
  • The position of the front wheel is constant and it is zero mark (origin).
  • The rear wheels are at 21.7 m mark

Position of the center mass of the plane is calculated as follows;

Let the position of the center mass, Xcm = y

the center mass is 3 m in front of rear wheels, that is

21.7 - y = 3

y = 21.7 - 3

y = 18.7 m

Xcm = 18.7 m

<h3>Mass of the plane at the position of the rear wheels</h3>

Let the mass of the plane at front wheels = M1

Let the mass of the plane at rear wheels = M2

X_{cm} = \frac{M_1x_1 + M_2x_2}{M_1 + M_2}

18.7 = \frac{M_1(0) + M_2(21.7)}{177000} \\\\3,309,900 = 21.7M_2\\\\M_2 = \frac{3,309,900}{21.7} \\\\M_2 = 152,529.95 \ kg

<h3>Force exerted by the ground on each rear wheel</h3>

There are two rear wheels, and the force exerted on each wheel due to mass of the airplane at this position is calculated as follows;

W = mg\\\\W_1 = W_2 = \frac{1}{2} (mg) = \frac{1}{2} (152,529.95 \times 9.8) = 743,396.76 \ N= 0.743 \ MN

<h3>Mass of the plane at the position of the front wheel</h3>

M1 + M2 = 177,000

M1 = 177,000 - M2

M1 = 177,000 - 152,529.95

M1 = 24,470.05 kg

<h3>Force exerted by the ground on the front wheel</h3>

W = mg

W = 24,470.05 x 9.8

W = 239,806.5 N = 0.239 MN

Learn more about center mass here: brainly.com/question/13499822

7 0
2 years ago
5. a. Answer the following questions. What is density? Write a formula by showing the relation among density mass and volume.​
gtnhenbr [62]

Answer:

Density is how compact something is. The relationship is M/V=D (Mass divided by Volume equals Density).

Explanation:

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3 years ago
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