I need to explain how objects can have the same volume but different mass. Help??

Answers

Answer 1

Answer: No problem, and you already know all about it.

Here are a few examples of same volume / different weight:

-- A bottle full of water is heavier than the same bottle when it's full of air.
-- Stones are heavier than styrofoam chunks the same size.
-- A bowl of meat loaf is heavier than a bowl of scrambled eggs.

In each example, two things have the same volume, but one weighs more than
the other. I didn't say anything about mass yet, but that's easy: As long as you
keep everything on Earth, more weight means more mass.

So how come, in each example, things with the same volume have different mass ?
This was your original question.

The answer is just the simple fact that there are millions of different substances, and
each different substance packs a different amount of mass into the same volume.

The amount of mass that a substance packs into a standard volume is called
the density of the substance. Meat loaf is more dense than scrambled eggs.
Stone is more dense than styrofoam. Water is more dense than air. And gold
is 19 times as dense as water. If you have a jar that holds a pound of water, and
you pour out the water and fill the jar with gold, the same jar holds 19 pounds of gold,
because the density of gold is 19 times the density of water.

The reason you were assigned to think about this question for homework is that
next time your Physics class meets, you'll start talking about Density. And you're
all ready for it now.

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Which term refers to the time interval between the passage of successive wave crests? a. wave height
b. wave period
c. wave speed
d. wavelength

Answers

I believe the correct answer from the choices listed above is option B. The term that refers to the time interval between the passage of successive wave crests would be wave period. It is the time for a particle on a medium to make one complete vibrational cycle.

Why can't alpha particles penetrate deeply into solids? Alpha particles have low mass. Alpha particles have high mass. Alpha particles have low velocity. Alpha particles have high velocity.

Answers

Alpha particles have both high mass and low velocity, but it would be the former that determines why they can't penetrate. An alpha particle is made of two protons and two neutrons, which is quite a large mass for a particle. This large mass keeps it from penetrating too deeply into anything, since it will essentially "get stuck" when it comes too near to another atom.
So the answer, I believe, is B. Alpha particles have high mass.

The answer is the Alpha Particles have low velocity

If a device uses 280 watts of power a day, about how many kilowatt-hours will it use in 30 days?

Answers

Given: 280 watts power a day

Unknown: KwH=?in 30 days
Solution: 280 watt-hours per day/1000x30 days
.28 x 30=n
Answer:8.4 kwh

dont answer 8.4, its wrong

Plato

Minerals mined for titanium are

Answers

Answer: Minerals that are mined for titanium are ilmenite and rutile.

Explanation:

Titanium is the 22nd element of the periodic table. It symbol is "Ti"

The minerals which are mined to extract titanium are ilmenite $(FeTiO_3)$ and Rutile $(TiO_2)$

Titanium is extracted from ilmenite with a process of acid leaching using fluorosilicic acid $(H_2SiF_6)$

Titanium is extracted from rutile by converting it into titanium(IV) chloride, and then reducing it to titanium using either magnesium or sodium.

Therefore, Mineral that are used to mine Titanium are ilmenite and rutile.

They are ilmenite, leucoxene, and rutile.

Your Welcome

Endothermic reactions give off heat as they proceed.
a. True
b. False

Answers

b. False
Endothermic reactions absorb heat.

Which types of electromagnetic wave travels through space the fastest?

Answers

Answer:

The electromagnetic wave that travels the fastest through space is gamma ray

Explanation:

Electromagnetic wave is a type of wave which does not require material medium for its propagation. Examples of electromagnetic waves according to increasing frequency of the waves are gamma ray, x-ray, ultra violet ray, infra red, visible light, micro wave and radio waves.

Frequency of a wave is inversely proportional to period of oscillation of the wave. The higher the frequency of a wave, the shorter the period of oscillation. Gamma ray has the highest wave frequency in electromagnetic spectrum and shorter period of oscillation, thereby causing it to have the highest penetration power.

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