PHYSICS MIDDLE SCHOOL

Which of the following is an example of mattera.leaves
b.shadow
c.light from the sun
d.sound

which of the following is an example of chemical property to matter
a.ability to melt
b.ability to break
c.ability to react
d.ability to freeze

Answers

Answer 1
Answer: for the first one, leaves is matter.
for the second one, ability to react
hope this helps
Answer 2
Answer:

the answers are a and c

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Which statement represents how charges interact? (2 points)A.Negative charges are attracted to negative charges.

B.Neutral charges are attracted to neutral charges.

C.Opposite charges are not attracted to each other.

D.Positive charges are attracted to negative charges.

Answers

D.Positive charges are attracted to negative charges.

Answer:

D. Positive charges are attracted to negative charges.

Explanation:

The interaction between two like-charged objects is repulsive. The interaction between two oppositely charged objects is attractive. ... Positively charged objects and neutral objects attract each other; and negatively charged objects and neutral objects attract each other.

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How is a euglena like a plant cell? How is it like an animal cell?Like a plant cell:

Like an animal cell:

Answers

The answer is a euglena has parts that allow it to move and catch food as an animal does. It also has chloroplasts, so it can make its own food, as a plant does.

A rectangular glass block of dimensions 8.0 cm by 15.0 cm by 3.0 cm weighs 10.5 N. Calculate the minimum and the maximum pressure the bock can exert when it rests on a horizontal table.---
Please answer this asap!

Answers

The pressure can be solved using the following formula:

P = mg / A

Where: P = pressure
mg = mass * gravity = W = 10.5 N
A = l*w

Solving for A (maximum):

A = 8*3
A = 24 sq. cm

Solving for A (minimum):

A = 15*8
A = 120 sq. cm

Substituting into the first equation:

Pmax = 10.5 N / 24 sq.cm
Pmax = 0.4375 Pa

Pmin = 10.5 N / 120 sq.cm
Pmin = 0.0875 Pa

Which statement describes between a cup if cold water and a cup of boiling water

Answers

The thermal energy keeps these two changing their temperature over time. 

The surrounding temperature (environment) clearly effects the cold water AND the boiling water. 

Eventually, both would reach an equilibrium in temperature. 

What compounds are you made of?

Answers

I am made of literally THOUSANDS of compounds ... too many to list here.
But the one compound that's most abundant, and actually comprises almost
80% of my entire beautiful body, is the compound DiHydrogen Oxide, with
the molecular formula H₂O .  This compound is commonly known as "water".
thousands of compounds

When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion? A.
+1







B.
-1







C.
+2







D.
-2

Answers

the electrical charge is +2 (positive)

Answer:

+2

Explanation:

Calcium also has a positive charge of 2. In the case of calcium ion, we have a calcium element with a positive charge of 2.  
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