please help .-. its for physics

Answer:

1.75 is the unit rate so yeah

Answer:

number one use carbon 14

Explanation:

Answer:

A

Explanation:

Carbon-14 testing of organic material such as wood can approximate the age by measuring the radioactive decay rate of the carbon-14 in the wood. From that a baseline for the trees age can be established and the ring patterns can by applied to a time period.

Answer:

Gravity. An object is moving across a surface, but it does not gain or lose speed.

Explanation:

The basic idea. Physicists see gravity as one of the four fundamental forces that govern the universe, alongside electromagnetism and the strong and weak nuclear forces.

Hope it helps! Brainliest?

Answer:

Cl- and Ar is the right answer:-)

Answer:

kenitec energy

Explanation:

because kinetic and mass have same

Answer: Your answer is 1250J

Explanation:

K E = 1/2 m v 2

The mass is  

m = 25 k g

The velocity is  v = 10 m s − 1

So,

K E = 1 /2 x25 x 10 2^2= 1250 J

pls mark brainiest answer  

Answer:

Explanation:

3. The word circuit means "go around", therefore a circuit is a pathway or closed path around which electricity (or water) flows.

4. Electrons flowing through a wire can be compared to water flowing through a hose. Once the flow of electrons or water is going, work, is performed.

5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.

6. Electricity from a wall outlet has enough energy to stop your heart.

7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.

8. Materials that allow electrons to move easily from atom to atom are called conductors.

9. Materials that do not allow electrons to flow easily are called insulators.

10. Semi- conductors are materials that are somewhere in between .

11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.

12. Current (amps ) is the amount of electricity and is compared to the amount of water in a hose .

13. Watts (power) is the term for work performed by electricity.

Answer:

Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion.  It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.

Explanation:

Answer:

Photons have no mass, they do have energy, and the gravity of a black hole (or any other gravitating body) will attract them.

Explanation:

is that what you wanted?

Resistors & Notations In Series In Parallel

A, B A + B A | B

A, B, C, D A+B+C+D A | B | C | D

In Combination Example A | B | ( C + D ) A | B | ( C + D )

Dec 1 2020

Answer:

Explanation:

5x + y = 7

20x - y = -2

    25x = 5

        x = (1/5)

5(1/5) + y = 7

1 + y = 7 .

y = 6

system of equations  5x+y=7, 20x+2=y

is  [tex]x=\frac{1}{5} \\y=6[/tex]

Therefore,

Calculation

[tex]5x+y=7.............(i)\\20x+2=y..........(ii)[/tex]

adding equations (i) and (ii)

⇒[tex]5x+y=7-(20x-y=-2)[/tex]

⇒[tex]25x=5[/tex]

⇒[tex]x=\frac{1}{5}[/tex]

putting the value of x in equation (i), we get

⇒[tex]5[/tex]×[tex]\frac{1}{5}+y=7[/tex]

⇒[tex]y=7-1[/tex]

⇒[tex]y=6[/tex]

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Answer:

Lava dome

Explanation:

A geyser is hot water being shot up from the ground

A newly formed island would be somewhere on the ground not directly above  a volcano (Well depending on where the volcano is anyways)

A flood basalt plateau is like rocks I think?

Answer:

Explanation:The speed of sound depends on several variables, but the only independent variable we need to calculate the speed of sound ... Enter your air temp and choose your units: The speed of sound: mph. Fahrenheit, knots. Celsius, m/s. Kelvin, ft/s.

Answer:

Explanation:

The kinetic energy of the toy car can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex] k = \frac{1}{2} \times 2 \times {5}^{2} \\ = 1 \times {5}^{2} [/tex]

We have the final answer as

Hope this helps you

Answer:

D) Strong gravitational force of the earth

Explanation:

Gravitational force is the force that attracts to objects with mass.This forces tries to pull masses together, that is why attractive in nature.

Answer:

yoo yoo

24

Explanation:

Insulators can be easily charged by friction as the extra electrons gained CANNOT easily escape. Conductors: materials that allow electrons to flow through them easily. Conductors CANNOT be easily charged by friction as the extra electrons gained can easily escape. When negatively charged rod is put near a metal can

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 69 × 2

We have the final answer as

Hope this helps you

As the shape of a molecule has a lot to do with the polarity of the compound, the molecular structure influences the molecular properties. Polar compounds tend to dissolve in polar compounds, forming solids or liquids with higher boiling and melting points.

A physical property is a property of matter that is unrelated to changes in its chemical composition. Density, color, hardness, melting and boiling points, and electrical conductivity are all examples of physical properties.

In the solid state, the structure determines how individual polymer molecules can orient. As a result, physical properties such as density, crystallinity, melting point, and strength are affected.

Intermolecular forces - forces that attract one molecule to its neighbors - van der Waals attractions or hydrogen bonds - govern physical properties.

Because the intermolecular forces of attraction are relatively weak, molecular substances tend to be gases, liquids, or low melting point solids.

Thus, this way the molecular structure of a material influence its physical properties.

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Answer:

C. the production of new machines as a result of processes using science and knowledge.

Explanation:

Technology is the application of scientific research and knowledge .

Answer:

D.) to the right

Kara is pushing a shopping cart to the right. The applied force is acting _______.

A.) upward

B.) downward

C.) to the left

D.) to the right

Answer:

D

Explanation:

D.) to the right

Answer:

what do you need helo with

Answer: An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Explanation: The parts of a circut bit can easily be found online, but heres a pic i found.

Answer:

A on edge 2020

Explanation:

Answer:

a.  convey different messages.

Explanation:

Got it on edge just took the test.

Answer:

For equilibrium the net torque on the rod must be zero. So the 100N forces should on either side of the pivot point i.e. one on the left and one the right, and in same direction.