PHYSICS HIGH SCHOOL

Using your own words, tell mewhat is the difference between an Pure Substance and a Mixture? Make sure to give me an example of each.

Answers

Answer 1
Answer:

Answer:

Hey there!

Mixtures are physically combined and can be separated. For example, sand and water is a mixture.

Pure substances are samples of matter with definite, and unchangeable chemical properties. For example, diamond is a pure substance.

Let me know if this helps :)
Answer 2
Answer:

a pure substance is a substance that has not been mixed with anything, a mixture has been mixed with another substance. an example is

dirt +water=mud iron is an example of a substance

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BRAINLIEST WILL BE GIVEN

If we want to know the velocity that an object is traveling, we must know thedistance and the time.

distance and the speed.

time and the direction.

direction and speed.

Answers

If my memory serves me well, if we want to know the velocity that an object is traveling, we must know the direction and speed. Velocity includes two these points listed in the previous sentence which means the answer is D.

Answer:

direction and speed.

Explanation:

How far does a car travel as it accelerates from rest to 24 m/s in 6 seconds?

Answers

Answer:

\boxed{\sf Distance \ travelled = 72 \ m}

Given:

Initial velocity (u) = 0 m/s (Starts from rest)

Final velocity (v) = 24 m/s

Time taken (t) = 6 seconds

ToFind:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

\boxed{ \bold{s = ((v + u)/(2) )t}}

By substituting value of v, u & t in the equation we get:

\sf \implies s = ( (24 + 0)/(2) ) * 6 \n \n \sf \implies s = (24)/(2) * 6 \n \n \sf \implies s = 12 * 6 \n \n \sf \implies s = 72 \: m

\therefore

Distance travelled by car (s) = 72 m

What is the bond between Hydrogen and Chlorine?

Answers

polar covalent bond
Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom H and a chlorine atom Cl connected by a polar covalent bond. The chlorine atom is much more electronegative than the hydrogen atom, which makes this bond polar.
covalent bond
chlorine and hydrogen atoms form a single covalent bond. in hydrogen chloride gas because the electrons are shared, not transferred from one atom to another. when it is dissolved in water to become hydrochloric acid.

Draw velocity-ime graph for uniform moion of an object , when initially body is at rest.

Answers

When the body is at rest, its speed is zero, and the graph lies on the x-axis.

When the body is in uniform motion, the speed is constant, and the graph is a horizontal line, parallel to the x-axis and some distance above it.

It's impossible to tell, based on the given information, how these two parts of the
graph are connected.  There must be some sloping (accelerated) portion of the graph
that joins the two sections, but it cannot be accounted for in either the statement
that the body is at rest or that it is in uniform motion, since acceleration ... that is,
any change of speed or direction ... is not 'uniform' motion'.

Two wires are used to suspend a sign that weighs 500 N. The two wires make an angle of 100° between each other. If each wire is exerting an equal amount of force how much force does each wire exert?

Answers

The force each wire exert will be "390.62 N".

The given values are:

Weight,

  • mg = 500 N

Angle,

  • θ = 100°

As we know,

The sum of vertical forces = 0

then,

→ \Sigma Fy = 0

Now,

→ F Cos (50) +F Cos (50) = mg

By substituting the value, we get

→                   2F Cos (50) = 500

→                                 F = (500)/(2 Cos (50))

→                                     = (500)/(2(0.64))

→                                     = 390.62 \ N  

Learn more:

brainly.com/question/6666347

Why are there so few working wave power stations?

Answers

Well mostly because it's for oceans and lakes that have waves. so if you don't live near any of these, you wouldn't be getting power. 
If you live near a sea or ocean, You Would be getting power. Because the waves are from large bodies of water (sea, ocean ...)
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