Please help me! Ill give brainliest who helps me first!!!!


What is one difference between mixtures and pure substances?
A. mixtures can be physically separated
B. mixtures are made of one type of atom
C. pure substances have no chemical bonds
D. pure substances can be physically separated

Answers

Answer 1
i think it’s A hope this helps
Answer 2
Mixtures can be physically separated (I believe)

Related Questions

What does the acronym B.E.E.F. stand for?

Question 5 options:

box-out, elbows out, energize, follow-through


balance, engage, eyes, field goal


block, engage, eyes, free-throw


balance, eyes, elbow in, follow-through


The defense is the team that has possession of the basketball, and is trying to score points.

Question 6 options:
True
False
Question 7 (5 points)
The bounciness of a basketball is most important for which action?

Question 7 options:

Shooting


Passing


Dribbling


Stealing

Question 8 (5 points)
What can you infer about why certain shots are worth three points, and others are only worth two?

Question 8 options:

Three-point shots are taken from longer distances, so they're harder to make


Three-point shots reward players for not committing fouls when they shoot


Three-point shots require shooters to battle through more defensive pressure than two-point shots


Three-point shots can only be taken by guards, while two-point shots can be taken by any player

Question 9 (5 points)
How are free throws different from ordinary shots?

Question 9 options:

They only occur late in games


They're taken by defensive players, not offensive players


They cannot be rebounded


They're each worth one point instead of two or three

Question 10 (5 points)
A player with the basketball has to dribble the ball to be able to move around.

Question 10 options:
True
False
Question 11 (5 points)
All shots in basketball are worth two points.

Question 11 options:
True
False
Question 12 (5 points)
Which skill is least useful on defense?

Question 12 options:

Speed


Strength


Passing Ability


Jumping Ability

Question 13 (5 points)
Who is the inventor of basketball?

Question 13 options:

James Naismith


John Bradshaw


Jerry West


Joe Namath

Question 14 (5 points)
What conclusion can be drawn from the fact that many of the best international players want to play in the NBA?

Question 14 options:

It's easier to join NBA teams than teams in other countries


Many of these players have never been to the United States


Basketball isn't very popular outside the United States


The NBA is the most competitive league in the world

Question 15 (5 points)
Which action is taken only by teams on offense?

Question 15 options:

Rebounding


Blocking


Stealing


Shooting

Question 16 (5 points)
A free-throw is a one point shot from the foul line.

Question 16 options:
True
False
Question 17 (5 points)
Finger-pads, waist level, and eyes up are cues for what skill?

Question 17 options:

Shooting


Stealing


Dribbling


Passing

Question 18 (5 points)
A person should step toward their target when passing the basketball.

Question 18 options:
True
False
Question 19 (5 points)
Any illegal physical contact to a basketball player is a foul.

Question 19 options:
True
False
Question 20 (5 points)
It is important to keep the _________ in when shooting the basketball.

Question 20 options:

Ankle


Foot


Knee


Elbow

Answers

Answer:

balance, eyes, elbow in, follow-through

Explanation:

A _________ reactive metal replaces a ____________ reactive metal in a chemical reaction. A. Less, more B. More, similar C. Similar, Less D. More, less

Answers

The answer is D. A more reactive metal replaces a less reactive metal in a chemical reaction.

Express 3 x 10-9s in milliseconds

Answers

Answer:

3 × 10 to the power minus 6 milliseconds

When we convert 3 x 10⁻⁹ s into milliseconds it would be 3 x 10⁻⁶milliseconds

What are significant figures?

In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.

If a number describing the result of a measurement (such as length, pressure, volume, or mass) includes more digits than the number of digits permitted by the measurement resolution, only the digits allowed by the measurement resolution can be significant figures.

As given in the problem we have to convert 3 x 10⁻⁹ s into milliseconds

1 second = 1×10³ milliseconds

3 x 10⁻⁹ seconds =  (3 x 10⁻⁹)  ×  (1×10³ )

                            = 3 x 10⁻⁶milliseconds

Thus, 3 x 10⁻⁹ s converted into milliseconds it would be 3 x 10⁻⁶ milliseconds

Learn more about significant figures here

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Carlos runs with velocity \vec{v}v →= (5.6 m/s, 29o north of east) for 10 minutes. How far to the north of his starting position does Carlos end up? (Give your answer to the nearest meter)

Answers

Answer:

1629 metres

Explanation:

Given that Carlos runs with velocity v = (5.6 m/s, 29o north of east) for 10 minutes.

To the north, the velocity will be:

V = 5.6 × sin 29

V = 2.715 m/s

Convert the time to second

Time = 10 × 60 = 600

Using the formula below

Velocity = distance/ time

Substitute all the parameters into the formula

2.715 = distance/600

Distance = 2.715 × 600

distance = 1629 m

What force is needed to accelerate a 90 kg punching bag 13 m/s2?

Answers

Answer:

The answer is 1170 Newton

Explanation:

Force =. Mass × Acceleration

= 90 × 13

= 1170 Newton

A car with a mass of 1,200 kg travels a distance of 150 m as it moves from
one stoplight to the next. At its fastest, the car travels at 22 m/s. What is its
kinetic energy at this point?
A. 290,400
B. 8,872 J
C. 580,800 J
D. 13,200 J

Answers

Answer:

A. 290,400

Explanation:

The kinetic energy of a car is 290,400J.

How to find Kinetic energy?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.

ke = 1/2mv^2

By using the formula, we get

= 1/2 * 1200 * 22^2

= 600 * 484

= 290,400 J

Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.

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What can affect gravity

Helpppppp!!!

Answers


gravity increases with height. gravity is significantly less on high mountains or tall buildings and increases as we lose height (which is why falling objects speed up) gravity is caused by the Earth spinning. gravity affects things while they are falling but stops when they reach the ground

A ball is dropped from rest from a high window of a tall building and falls for 4 seconds. Neglecting air resistance, the final velocity of the ball is?

Answers

Answer:

The final velocity of the ball is 39.2 m/s.

Explanation:

Given that,

A ball is dropped from rest from a high window of a tall building.

Time = 4 sec

We need to calculate the final velocity of the ball

Using equation if motion

[tex]v=u+gt[/tex]

Where, v = final velocity

u = initial velocity

g = acceleration due to gravity

t = time

Put the value into the formula

[tex]v=0+9.8\times4[/tex]

[tex]v=39.2\ m/s[/tex]

Hence, The final velocity of the ball is 39.2 m/s.

Which statement explains why carbon 14 dating cannot be used to date ancient rocks

Answers

Answer:

Carbon-14 decays relatively quickly

Explanation:

i took the test

When velocity is positive and acceleration is negative, what happens to the object’s motion?
a The object speeds up.
b The object remains at rest.
c Nothing happens to the object.
d The object slows down.

Answers

Answer:

Option (D) : The object slows down.

A body weighs 65N.Calculate it's mass.(g=10N/kg)

Answers

Explanation:

Hey there!!

Here,

Weighs = 65n

Gravity = 10n

We know that,

weighs = mass × gravity.

65 = m × 10

[tex]m = \frac{65}{10} [/tex]

Therefore the mass is 6.5 kg.

Hope it helps...

Two vectors, X and Y, form a right angle. Vector X is 48 inches long and vector Yis 14 inches long. The length of
the resultant vector is
inches

Answers

48 inches go restaurant vector is 14 inches Long and right angle

Refer to the position time graph provided to answer questions #1 thru 5.
1. What is the instantaneous velocity of the object at 5 s?

2. What is the distance the object moves from 0 to 9 seconds?

3. What displacement did the object have between 2 s and 9 s?

4. What was the object's average velocity over the first 5 seconds?
5. How many times does the object change direction of travel? (time zero
does not count and standing still does not count as a direction change)

Answers

Answer:

Explanation:

1). To calculate the instantaneous velocity of the object, we will calculate the slope of the line CD.

  Since line CD is a straight line, therefore, slope = 0

  Hence instantaneous velocity = 0

2). Distance of the object when it moves from 0 to 9 seconds

    = Distance traveled from (A to B + B to C + C to D + D to E)

    = 3 + (3 + 0.5) + 0 + 0.5

    = 7 m

3). Displacement = Distance between initial and the final positions of the object

    = 3 - 0

    = 3 m

4). Average velocity = [tex]\frac{\text{Displacement}}{\text{Time}}[/tex]

                                 = [tex]\frac{0.5}{5}[/tex]

                                 = 0.1 m per sec

5). Direction changes have been seen at t = 2 sec and t = 4 sec.

   Hence object changed its direction of travel 2 times.

1. What types of emergency situations could
rescue workers be in that would make it
difficult for them to get energy to their
electrical devices?

Answers

Answer:

  large-scale natural disasters

Explanation:

The niceties of civilization are generally unavailable over wide areas when they are affected by ...

hurricanesearthquakestornadoes

Such situations often require rescue workers.

Situations such as:

natural disasters, such as flooding.fire disasters

First, we wonder, who are rescue workers? Basically speaking, a rescue worker is anyone who is trained to bring people out of any harm, danger, or threat that may come their way.

|n such emergency situations, power lines are usually down, and so it may be difficult for them to get the energy needed to power their  electrical devices.

You could find a similar question here;

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what type if data do you call it when a scientists mesure the length of the growing root tip and determine the rate a particular reaction​

Answers

Root mass
Grid intersect technique remove plants from soil
Trace the roots on paper, measure each of the tracing

The simplest form of a substance
is called:
A a period
B a property
Can atom
D an atomic number

Answers

Answer :

C) Atom

Actual answer should be element but depends on the way you interpret the question and the options given to answer it

Explanation :

Atom is the most basic unit of any substance and is what molecules are made of.

Hope it helps if it does let me know by thanking

PAGE 29
Q. 1. What is meant by power of accomodation of the eye?​

Answers

This is the process of changing the shape of the eye lens to focus on near or distant objects.

please someone help me.
A car starts to move from rest after 5 seconds its velocity becomes 15m/s, find the acceleration of the car.​

Answers

Answer:

acceleration of the car is 3 m\s^2

Explanation:

from rest means the initial velocity (vi) is zero

time = 5s

final velocity (vf) = 15m\s

a = vf - vi \ t

a = (15-0) \ 5

a= 3 m\s^2

which means that the car is speeding up 3 meters every second

Answer:

3m/s

Simple

Explanation:

Solution,

U=0

Velocity=15m/s

Time=5 sec

Now,

Acceleration=V-U÷T

=15m/s-0÷5

=15m/s÷5

=3m/s

Hence, the acceleratiob of the car is 3m/s.

Explain why this statement is incorrect: “If I find something on the Internet, that means it is for public use, and I can do anything I want with it.” I give braininess

Answers

Answer:

A personal idea is an idea or concept that is unique to the individual who created it. Reference credit must be given when the idea is used by any person who did not create the concept.

Explanation:

I took the assignment already.

A personal concept is a concept or idea this is unique to the man or woman who created it. Reference credit scores have to receive when the idea is utilized by any individual who did not create the idea.

What is the internet?

The net is a big network that connects computers all over the world. through the net, people can percentage information and talk from anywhere with a web connection.

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HELP ME PLZ!!!! I'LL DO ABSOLUTELY ANYTHING, AND I MEAN ANYTHING!!!!!!

Answers

The amount of radiation that a human gets when traveling through space is very toxic this is something that makes it difficult for them to travel as well as the extreme temperatures.

Answer:

There are so many things that make human travel difficult.

Here are some ideas ;

1) Air and Water -Taking water and oxygen from the Earth is very expensive and very difficult. (Note that if there is lots of water, oxygen can be made from the water. Also, if there is carbon dioxide, oxygen can be made.)

2) Food - people will need to grow their own food on another planet - transportation to and from Earth is, again, too expensive. Plants need carbon dioxide and sunlight (real sunlight is best; artificial lighting will work, too.)

3) Energy - Human settlements will need to create their own energy. Energy can be created using the sun.

Note that these powers have their own advantages and disadvantages

4) Radiation - Radiation is harmful for people, plants and animals. On Earth, we are protected by a magnetic field and an atmosphere. Some planets and moons have neither; some have only one or the other. Very few have both. Some planets have very strong magnetic fields that create even more radiation. Crazy right .

5) Gravity - planets or moons with a lesser gravitational pull than the Earth will result in astronauts having smaller bone and muscle mass, which is a serious problem if they are to come back to Earth. The closer a planet's gravity is to Earth, the less of a problem this is.

6) Atmosphere - Some planets have no atmosphere while some have atmospheres that will crush people(Woah ) .It's easier to deal with low-pressure rather than high-pressure, but both are dangerous if there is an air leak.

7) Distance - the further a planet is from Earth, the harder it is to.

8) Temperature - The hotter or colder a planet is, the more energy it will take to change the temperature(and im not really sure how ).

Explanation:

Why is it important to describe motion in universal terms?

Answers

Answer:

Motion requires force to cause that change. The time you take to travel the distance depends upon speed; the distance travelled is measured as the length of a line between the start and end of a motion. It is an important aspect in physics. In our lives motion is important and impacts so many things that we do.

Explanation:

The motion of every object is relative, thus it is important to discuss this motion in universal terms which serves as a reference point.

The motion of an object occurs when there is change in the position of the object with time and the object moves in the direction of the applied force. This motion is influenced by the net force acting on the object.

For example:

The dimension of speed of object in motion is measured with two fundamental quantities (length and time);

speed = LT⁻¹

The motion of every object is relative, thus it is important to discuss this motion in universal terms which serves as a reference point.

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Someone please help me to answer this questions...​

Answers

Answer:

a.25J

Explanation:

m=0.5kg

g=10

h=5

potential energy=m×g×h

=0.5×10×5

=25J

10. John has borrowed his parents car without permission and is driving without a license. He
sees them out walking and realizes that they will be home in about 45 seconds. He is 500 m
from home and driving 25 m/s. Will he get to the driveway before they do?

Answers

Yes

Explanation:
John is driving at 25 meters per second and he has to drive 500 meters to get to his house.
I divided 500 by 25 to see how long it would take for John to get to his house
- 500/25= 20

Therefore, it will take John 20 seconds to reach his driveway, which is 25 seconds less than how long it will take his parents- so he will get to the driveway before them.

An open system starts with 52 J of mechanical energy. The energy changes
to 45 J of mechanical energy and 2 J of thermal energy. What is the final total
energy of the system?
A. 50 J
B. 54 J
C. 47 J
O D. 9 J

Answers

Answer:

ITS C 47

Explanation:

The answer is C. 47 J

A cannon is fired horizontally from the edge of a 100 meter tall cliff. The muzzle velocity of the cannon is 180 m/s . How far from the base of the cliff does the hall land?
A-.55m
B-813.16m
C-3673.47
D-700m

Answers

Answer:

B - 813.16 m

Explanation:

First, find the time it takes to land.  Given in the y direction:

Δy = 100 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

100 m = (0 m/s) t + ½ (9.8 m/s²) t²

t = 4.52 s

Now find the distance traveled in that time.  Given in the x direction:

v₀ = 180 m/s

a = 0 m/s²

t = 4.52 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (180 m/s) (4.52 s) + ½ (0 m/s²) (4.52 s)²

Δx = 813.16 m

If an object is 413 Kg in mass and 640 M3. What is the density? Will It Float?

Answers

Answer:

The density will be 0.65 kg/m3

I think it won't float!! I am not sure though.

PLEASE HELP*******
use the table to find the acceleration of the object for the time interval 1.0 to 4.0 seconds ​

Answers

Answer:

acceleration for time interval from 1 sec to 4 second is 1.5 metre/second^2

mark it as brainliest!!

what are 6 things the four states of matter have in common please help asap!​

Answers

They all compact like are close together

List the planets that have a diameter of less than 15,000 km.

Answers

Answer:

Hey!

Your list goes like this!

MERCURY-- 4,879 km

VENUS-- 12,104 km

EARTH-- 12,756 km

MARS-- 6,779 km

Explanation:

You could add Pluto but it depends as its now called a DWARF PLANET

I HOPE THIS HELPS!!

Basketball is __________ to the United States

Question 4 options:

Native


Foreign


New


Unknown

Answers

Answer:

native

Explanation:

bc it was started when we were playing it with baskets

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