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4 years ago

11

An object on the moon will weigh 1/6th of what it does on earth but have the same mass. Why is that?

1 answer:

elena55 [62]4 years ago

8 0

Answer:

Because the weight depends of the gravity

Explanation:

This is because weight and mass are different, in order to better understand this problem we will apply an example with real values, which will help us to determine a person's weight.

A man has a mass of 80 [kg] on Earth when measuring his weight he realizes that it is 784.9 [N] and on the moon it is 130.8 [N]

<u>On Earth</u>

<u />

$g_{e} = 9.81[m/s^2]\\g_{m} = 1.635[m/s^2]$

Where:

g = gravity

<u>Weight on the moon</u>

<u />

Wm = 80 * 1.635

Wm = 130.8[N]

<u>Weight on the earth</u>

<u />

We = 80 * 9.81

We = 784.8[N]

<u />

In this way we can see that the weight depends on the gravity of where the person is located.

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Parallax of the stars is created by

k0ka [10]

Parallax of the stars is created by :
B. Different locations of Earth in its orbit
Parallax refer to the position of an object (in this case, a star) that will look different if we view it from different positions

hope this helps

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4 years ago

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24. A total of 165 J of work is done on a gaseous refrigerant as it undergoes compression. If the internal energy of the gas inc

Yuliya22 [10]

The total amount of energy transferred as heat is equal to 288 Joules.

<u>Given the following data:</u>

Internal energy = 123 Joules

Work done = 165 Joules

To calculate the total amount of energy transferred as heat, we would apply the first law of thermodynamics.

<h3>The first law of thermodynamics.</h3>

Mathematically, the first law of thermodynamics is given by the formula:

$\Delta E = Q - W$

<u>Where;</u>

$\Delta E$ is the change in internal energy.

Q is the quantity of heat transferred.

W is the work done.

Substituting the given parameters into the formula, we have;

$123 = Q - 165\\\\Q=123+165$

Q = 288 Joules.

Read more on internal energy here: brainly.com/question/25737117

4 0

3 years ago

Which of the following is the correct abbreviated SI unit describing the mass of an object? a. molly

lions [1.4K]

The answer is C I hope this helps

7 0

3 years ago

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An AC voltage source and a resistor are connected in series to make up a simple AC circuit. If the source voltage is given by ΔV

ra1l [238]

Answer:

t = 5.48 × 10⁻³ s

Explanation:

Given:

ΔV = ΔVmax × sin(2πft)

frequency, f = 16.9Hz

thus,

ΔV = ΔVmax × sin(2π×16.9×ft)

Now,

Let 'R' be the resistance

Also according to the ohms law

i = V/R

where,

i = current

V = voltage

hence,

$i=\frac{\Delta V_{max}sin(2\pi \times 16.9\times t)}{R}$

also, given at time 't' the current in the circuit is 55.0% of the peak current

thus

$i=\frac{55}{100}\times \frac{\Delta V_{max}}{R}=0.55\times \frac{\Delta V_{max}}{R}$

thus,

$0.55\times \frac{\Delta V_{max}}{R}=\frac{\Delta V_{max}sin(2\pi \times 16.9\times t)}{R}$

or

$0.55=sin(2\pi \times 16.9\times t)}$

or

$0.5823=(2\pi \times 16.9\times t)}$

or

t = 5.48 × 10⁻³ s (Answer)

8 0

3 years ago

Match the vocabulary terms to their definitions. 1. an indication of how close a measurement is to the correct result precision

polet [3.4K]

<u> Answers</u>

1. precision

2. density

3. control

4. matter

5. accuracy

6. gradation

<u>Explanation</u>

1. An indication of how close a measurement is to the correct result is called precision.

2. The mass of a substance per unit volume is called density of a substance.

3. A quantity in an experiment that remains unchanged or constant is called a control group.

4. Anything that has mass and occupies space is called matter.

5. The degree to which a measurement can be replicated is called accuracy.

6. Scale markings that denote equal units of measure is called gradation.

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3 years ago