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3 years ago

I got the correct answer, but I don't know what I did. Why is the answer E?

Physics

1 answer:

MariettaO [177]3 years ago

6 0

Explanation:

Displacement is the straight line distance from the starting position to the final position.

Person X walks halfway around circle. So her displacement is 100 m.

Person Y walks 3/4 of the way around. So his displacement is 50√2 m ≈ 70.7 m.

Person Z walks completely around the circle, so their displacement is 0 m.

Therefore:

Z < Y < X

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Imagine you are a passenger in a car and you are looking out the window. A car is in the lane next to you facing the same direct

lutik1710 [3]

Answer:

First possibility is that while changing radio station, the car had overtaken, or either you slowed down and you let the car get in front of you, either intentionally or non-intentionally.

Explanation:

These are tree possibilities I mentioned above.

Give me Brainliest.

8 0

3 years ago

Read 2 more answers

The message refers to which of the following?

goldenfox [79]

The message refers to the ideas, thoughts, and feelings being communicated (C).
<span>A message can be defined as a short written, verbal or recorded communication containing information that is sent to a person. The person sends or receives the message cannot be contacted directly. A message can also be a moral, political, social point that is meant to be passed onto society via a speech, movie, art exhibition, music and many more. It can also be a formal communique sent by a representative of one government to another government.</span>

6 0

3 years ago

A metallic sheet has a large number of slits, 5.0 mm wide and 16 cm apart, and is used as a diffraction grating for microwaves.

GalinKa [24]

Answer:

$6\times 10^{10}\ Hz$

Explanation:

d = Slit gap = 5 mm

Slit distance = 16 cm

c = Speed of light = $3\times 10^8\ m/s$

$\lambda$ = Wavelength

We have the relation

$dsin\theta=\lambda$

Here, $\theta=90$

$d=\lambda\\\Rightarrow \lambda=5\ mm$

Frequency is given by

$f=\dfrac{c}{\lambda}\\\Rightarrow f=\dfrac{3\times 10^8}{5\times 10^{-3}}\\\Rightarrow f=6\times 10^{10}\ Hz$

The frequency is $6\times 10^{10}\ Hz$

3 0

4 years ago

if the moon is 238,000 miles from earth, convert this distance to meters and leave your answer in scientific notation.

Softa [21]

The result of the value conversion is 382,942,000 meters and it can be written by scientific notation as $\sf{\bold{3.83 \times 10^8 \: meters}}$

<h2>Introduction </h2>

Hi ! I'm Deva from Brainly Indonesia. Here I will help you convert between units and convert it to scientific notation.

<h3>International Standard Unit</h3>

In the world of physics, we know a system called International Standard units, so that the non-standard form of units (which are agreed upon by several countries or people only), must be converted to this international standard.

<h3>Scientific Notation</h3>

Scientific notation is the notation used to simplify the mention of too long zeros as integers or decimal number. Scientific notation is denoted by:

$\boxed{\sf{\bold{x \cdot 10^n}}}$

With the following condition :

x = any number starting from 1 and less than 10 and can be decimal.
n = any number both positive and negative integers.

<h2>Problem Solving</h2>

We know that :

1 mile ≈ 1.609 kilometers ≈ 1,609 meters
The distance >> 238,000 miles.

What was asked :

Distance = ... meters
Scientific notation = ... ?

Step by step :

Distance = d

$\sf{d = 238,000 \times 1,609}$

$\boxed{\sf{d = 382,942,000 \: meters}}$

Scientific Notation

The result states the number in the hundreds of millions. The number hundreds of millions always has a power of 8 ( $\sf{10^8}$ ). So, we convert 382.942,000 >> 3.82942000 and because the last three zeros can be omitted.

The scientific notation become :

$\boxed{\sf{Distance \: = 3.83 \times 10^8 \: meters}}$

8 0

2 years ago

Which best describes friction?

tangare [24]

Answer:

a constabt force that acts on object that rub together

Explanation:

It is because Friction is the rubbing of one body against another body

5 0

2 years ago