How does the amount of water in a glass affect the pitch of the sound it produces?

Answer:

the more water the higher the pitch the less water the lower it is

Answer:

The glass with the most water has the lowest pitch. The glass with the least amount of water has the highest pitch.

Explanation:Tapping the glasses causes the air to vibrate. When the air column is shorter, the air vibrates faster and the pitch is higher.

When a log burns in a fire, a a physical change has occurred. b mass is gained. c new substances are formed.

Leandra is baking cookies, and they are ready to come out of the oven. Before she takes them out of the oven, she puts oven mitts on. Why does Leandra do this?

A Heat energy moves from warmer objects to cooler ones.
B Heat energy moves from cooler objects to warmer ones.
C The light energy from her hands will transfer to the cookies.
D The coolness of her hands will transfer to the cookies and will make them cold.

Compound: ________________
. Found in saltpeter in soil; contain nitrogen (N)

Compound: ________________
. Found in apatite soil, contain phosphorus (P)

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How does the atmosphere make Earth warmer?

Use the terms carbon dioxide, nitrates, phosphates, sulfates, and water to complete the chart that describes the inorganic compounds that provide most of the main elements of life to plants.

Heather is investigating the properties of light and how it travels. She places a glass on the windowsill and waits for the sun to shine on the glass and observes what happens. Next, she places a piece of cardboard in front of the glass. Which statement describes the results of her observations?

A Since glass is translucent, most of the light energy was reflected from the glass.
B When the cardboard was placed in front of it, the cardboard absorbed some of the light energy.
C The light from the sun was able to travel through the glass. When the cardboard was placed in front of the glass, it absorbed the light energy from the sun and converted it into heat energy.
D The glass absorbed the light and converted the light energy into heat energy. When the cardboard was placed in front of the glass, the heat was transferred from the glass to the cardboard.
When the sun hit the glass, the light energy was absorbed. When the cardboard was placed in front of the glass, it absorbed the light energy from the sun and converted it into heat energy.

Which of the following descriptions matches the motion shown in the graph.



A person leaves home and slows down for a pedestrian.


A person leaves home, picks up speed, and then stops at a red light.


A person is parked at parking lot and then speeds off.


A person walks down the block at a steady speed.


If I already asked this but please help ;v;

Steps of Cellular Respiration:

___ Carbon dioxide molecules form.
___ Sugar molecules are broken down.
___ A flow of electrons produces chemical energy and water.

Organisms on earth are
what-based life forms
oxygen
hydrogen
carbon

What two gases in the atmosphere do animals and plants need to breathe and grow?

What can the student conclude about the experiments? (Attachment)
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A. Experiments 1 and 2 show chemical changes because bubbles were produced.

B. Experiment 1 shows a physical change because no new substances were produced, and experiment 2 shows a chemical change because a new substance was produced.

C. Experiment 1 shows a chemical change because bubbles were produced, and experiment 2 shows a physical change because a liquid turned into a solid.

D. Experiments 1 and 2 show physical changes because no new substances were produced.

The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?
a.
3
c.
6
b.
5
d.
7

And done! :)))))))))

Carlos listed some advantages and disadvantages of using nonrenewable resources.



Which best describes Carlos’s error?

In which direction does heat energy move?

A From cold objects to colder objects
B From colder objects to warmer ones
C From warmer objects to colder ones
D From warm objects to warmer objects

match each force abbreviation to the correct description.

I need it done assap

How many atoms are in Fe(OH)2

What is the difference between force and velocity?

You know the drill by now-

Jessica is traveling from Miami, Florida, to Chicago, Illinois. Using the map, tell what the land will be like during the first half of her trip.



The elevation will be high.
The elevation will be low.
The land will be mountainous.
The land will stay below sea level.

The shallowest part of the ocean is the
a. Continental slope
b. Continental shelf
c. Trench
d. Mid-Oceanic Ridge

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How many atoms are in (NH4)2SO4

I have 7 more questions left :’)

1.Write the chemical formula for the ionic compound formed by each pair of ions.

a.Na+and Br−

b.Mg2+and Br−

c.Mg2+and S2−

d.K+and Cl−

e.Mg2+and Cl−

f.Li+and N3−

2. Noel created two binary ionic compounds using sameCation and two different anions -MgO and MgCl2Now ,Can you create two binary ionic compounds withTwo different cations and same anion

PLEASE HELP FAST !!

An object with a mass of 24g and a volume 6mL has a density of?
a. 0.25 g/mL
b. 6 g/mL
c. 144 g/mL

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