PHYSICS MIDDLE SCHOOL

Which one of the following is a measurement of energy used?A.
24 meters per second

B.
60 milligrams

C.
15 liters

D.
6 joules

Answers

Answer 1

Answer:

The correct answer to the question is D) 6 joules.

EXPLANATION:

As per the question, four measurements are given i.e 24 m/s, 60 mg, 15 L and 6 J.

We are asked to determine the measurement which corresponds to energy.

Energy is measured in various units like joule, erg, electron volt etc.

Joule is the unit of energy in S.I system.

Hence, the correct measurement which corresponds to energy is 6 joules.

All other measurements like 24 m/s, 60 mg and 15 L are not the measurements of energy. These are the measurements of speed, mass and volume respectively.

Answer 2

Answer: D. 6 Joules trust me i work with cars so i have to know this

Related Questions

If the angular displacement= 3t²+2t,find the angular velocity and angular acceleration
Calculate the acceleration if force is equal to 50 and the mass is 45
Sarah, who lives in Australia notices that the length of the shadow of the flagpole is getting shorter every day when measured at noon. Paul, who lives in Canada, notices that the length of the shadow of the flagpole is getting longer everyday when measured at noon.Explain how both students can be observing this at the same time. Include these in your explanation: Sun; earth; tilted axis; rotation and revolution.
Matter and energy can convert into each other. True False
Which one of the following is not a safety rule in the laboratory. a. To sit on a stoolb. To follow instructionsc. To wear shoes with hard solesd. Handling apparatus

Question 2How do an ionic bond and a covalent bond differ?

A. An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.

B. A covalent bond is an attraction between oppositely charged ions. An ionic bond is a sharing of electrons between atoms.

C. There is no difference. Both an ionic bond and a covalent bond share electrons.

D. There is no difference. Both an ionic bond and a covalent bond are attractions between oppositely charged ions.

Question 3

What is a bond between a positive and a negative ion called?

A. covalent bond

B. ionic bond

C. metallic bond

D. polar bond

Question 4

Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2). Why do these substances have different properties?

A.The atoms are arranged differently in each molecule.

B. The molecules are the same.

C. The atoms are the same.

D.Water has more atoms than hydrogen peroxide.

Question 5

What is the definition of a chemical bond?

A. a mutual attraction between the nuclei and electrons in two different atoms

B. a mutual attraction between the nuclei and electrons in a single atom

C. a mutual repulsion between the nuclei and electrons in two different atoms

D. a mutual repulsion between the nuclei and electrons in a single atom

Answers

2.(A)These two opposite ions attract each other and form the ionic bond.Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electronsbetween atoms and other covalent bonds

Which (on average) takes the longest to orbit the sun (longest period)?A) asteroid
B) comet
C) earth
D) mars

Answers

Comets on average take the longest to orbit the sun (longest period), therefore the correct answer is option B.

What is a solar system?

It is a system that collection of all the planets and spatial bodies revolving around the sun because of the gravitational pull of the sun.

Our Solar System is based on a heliocentric model in which the Sun is assumed to reside at the central point of the planetary system.

The earth (on average) takes one year to orbit around the sun.

Mars on average takes 1.73 years to orbit around the sun.

astroid on average takes 4-5 years to orbit around the sun.

Comets on average take the longest to orbit the sun (longest period)

Thus, the correct answer is option C.

Learn more about SolarSystems here, refer to the link ;

brainly.com/question/12075871

#SPJ2

earth-1 year
mars-1.724 years
astroid-4.76 years
comet-100+ years
B) comets have the longest orbit

Explain what it mean to say that energy is conserved

Answers

It really means that the total amount of energy in the universe is
a fixed number, and doesn't change.

So if you're watching what's going on in some fixed bottle, box, pot,
or other volume, 'conservation' means that no energy can magically
appear in the bottle or disappear from it. The total amount of energy
can't change. The energy can only move from one place to another.
So if you see the amount of energy change inside there, then you
know that either some of the original energy must have leaked out
and escaped, or else more energy came in from somewhere.

This is actually a very powerful thing to know. It helps solve a lot
of problems.

7. What mass of water will change its temperature by 3.0°C when 525 J of
heat is added to it?

Answers

The mass of the water is 41.9 g

Explanation:

When an amount of energy Q is supplied to a sample of substance of mass m, the temperature of the substance increases by $\Delta T$ , according to the equation:

$Q=mC_s \Delta T$

where:

m is the mass of the substance

$C_s$ is the specific heat capacity of the substance

$\Delta T$ is the change in temperature

In this problem, we have:

Q = 525 J is the amount of heat supplied to the water

$\Delta T = 3^(\circ)C$ is the change in temperature of the water

$C_s = 4.18 J/gC$ is the specific heat capacity of the water

Solving for m, we find the mass of the water:

$m=(Q)/(C_s \Delta T)=(525)/((4.18)(3.0))=41.9 g$

Learn more about specific heat capacity:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

How do whales bats and dolphins use echolocation?A To scare away predators
B To attract mates
C To orient them selves and find food
D To tell animals of there species where they are