**Answer:**

**F**

**Explanation:**

for every action there exists an equal and opposite reaction. The force acting on the two masses is identical in magnitude, but opposite in direction.

______ uses radioactive materials to create contrast in the body and help form images of the structure and function of organs.

**Answer:**

Nuclear medicine or PET scanning (Positron Emission Tomography)

**Explanation:**

Not super sure what your question is looking for but I think it can be either. PET is a technology used in the nuclear medicine field, and nuclear medicine is a broad field of using the technology the question described.

What are the two fundamental ways energy and momentum are moved from one place to another?

The **two** fundamental ways **energy** and **momentum** are moved from one

place to another are through the **mass** and **velocity**.

The formula for **momentum** is **mass** multiplied with **velocity**.

**Momentum= mass × velocity**

The **two** factors in which **momentum** and **energy** is moved from one place to

another is however through how **much** and how **fast** the object is moving

which validates the answer.

Read more on https://brainly.com/question/1042017

There is a bell at the top of a tower that is 45 m high. The bell weighs 15 kg. The bell has energy. Calculate it.

**Answer:**

6621.75J

**Explanation:**

In this case, the bell is not in motion. So we are going to calculate its **potential energy** rather than its **kinetic energy** since **kinetic energy** is the energy a **body possesses in motion**.

The formula for the **potential energy **is m*g*h, meaning the mass * acceleration due to gravity * height. Here the **mass, m = 15kg**, the **acceleration due to gravity = 9.81m/s^2**, and the **height, h = 45m**

Substituting our values, the answer becomes **15 * 9.81 * 45 = 6621.75J**. Hope you understood my explanation?

Answer This!!!!!!

I'll give brainliest to whoever gets it right.

**Answer:**

**Explanation:**

Gamma can occur at any step in the decay as the remaining protons and neutrons rearrange themselves into their new identity.

The fastest possible rate of rotation of a planet is that for which the gravitational force on material at the equator just barely provides the centripetal force needed for the rotation. Calculate the minimum rotation period assuming a density of 3.70 g/cm3.

**Answer:**

m ω^2 R = centripetal force

G M m / R^2 = gravitational force

ω^2 = G M / R^3 for the forces to be equal

d (density) = M / V = M / (4/3 R^3) = 3/4 M / R^3

or M / R^3 = 4 d / 3

Then

ω^2 = G 4 d / 3

d = 3.7 g/cm^2 = 3700 kg/m*3 converting

ω^2 = 6.67E-11 * 3700 * 4 / 3 = 32.9E-8

ω = 5.74E-4

P = 1 / f = 2 pi / ω = 6.28 / 5.74E-4 = 1.09E4 sec

10900 / 3600 = 3.04 hrs for the minimum rotation period

What is measurement?

**Answer:**

the process of associating numbers with physical quantities and phenomena.

Just like our bodies, Earth's cycles tend to maintain a balance or equilibrium .

The Correct answer is Equilibriumthe earth's cycle cycle tend to maintain the balance or equilibrium of the earth by maintaining the proper amount of water , nitrogen , carbon , phosphorous on earth . Each of the comonent of earth's cycle is equally important because they support life on earth. They are basis of life as carbon is found in abundant amount in all the life forms. Phosphorous, nitrogen and Water is equally important in the human beings as well as in plants and animals Hence , they maintain the equilibrium of earth

SOMEONE PLEASE HELP MEEEEEEE

**Answer:**

Weathering and erosion

**Explanation:**

A gazelle is grazing while standing in a fixed location. When it's startled by a predator, the gazelle accelerates uniformly for 16.8 s until it reaches a speed of 21.9 m/s. The gazelle then runs in a straight line at constant speed for an additional 16.4 s. Finally, it uniformly slows to a stop at a rate of 1.8 m/s/s. What is the total distance traveled by the gazelle in meters

**Answer:**

**Explanation:**

acceleration phase

average speed was 21.9/2 = 10.95 m/s

distance covered is 10.95 m/s(16.8 s) = 183.96 m

distance at top speed 21.9 m/s(16.4 s) = 359.16 m

distance while decelerating (0² - 21.9²)/(2(-1.8)) = 133.225 m

total = 183.96 + 359.16 + 133.225 = 676.345 = **676 m**

An elephant has a mass of 55,000 kg. What is the elephant’s weight on Saturn (g= 10.4)?

**Answer:**

**Explanation:**

F = ma

F = 55000 kg(10.4)

**F = 572000 N**

That is an amazingly large elephant, more like 11 elephants

A more typical mass for a single elephant would be 5000 kg with a weight on Saturn of 52000 N

If you have to measure the temperature > above 80°c, do you use an alcohol or mercury thermometer? why?

**Answer:**

I use mercury thermometer to measure the temperature above 80°C because the boiling point of alcohol is 78°C . So, it can't measure the temperature above 78°C.

A body is moving along a circular path with variable speed, it has both radial and tangential acceleration.

Select one:

True

False

**Answer:**

True; ar = v^2 / R Radial acceleration because it moves in a circular path

at = α R = tangential acceleration because its speed changes

a = at + ar total acceleration equals sum of radial and tangential

A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. Its speed is 38 m/s when it reaches ground level. What was its speed when its height was half that of its starting point

**Explanation:**

look !

speed= 38m/s

start from rest= 0

Fireworks have a very high reaction rate. Describe and explain what could be done to slow down their reaction.

**Answer:**

Don't light up the firework or put less fire

**Explanation:**

Using **Pharaoh's serpent **or **"black snake" firework **could be done to slow down their reaction.

**Gunpowder **is typically made using three reagents: potassium nitrate, carbon, and Sulphur. These kinds of elements are used in a **combustion **reaction that results in this detonation explosion. You have solid reagents reacting to produce gases in the form of solid **potassium **carbonate, solid potassium sulphate, nitrogen gas, and carbon dioxide gas.

The numerous **metal **salts that are added to produce the colours spread out all of that material, which is in a super-heated state. In such extremely intense environment, the metal salts heat up and get "**excited**," emitting light as a result.

If you want an **explosion**, you need the chemical **reaction **to go **quickly **in order to release a large volume of gas in a brief period of time. You might have a chemical reaction that happens rather **slowly**, like the **Pharaoh's serpent** or "black snake" firework.

Find more about **fireworks **in the link:

https://brainly.com/question/16737516

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A 1.95 kg box sits on an incline of 24 ° with the horizontal. If the box accelerates down the incline at 0.245 m/s 2 , what is the coefficient of kinetic friction between the box and the inclined plane?

**Answer:**

**Explanation:**

F = ma

mgsinθ - μmgcosθ = ma

gsinθ - μgcosθ = a

μgcosθ = gsinθ - a

μ = (gsinθ - a) / gcosθ

μ = (9.81sin24 - 0.245) / 9.81cos24

μ = 0.4178906...

** μ = 0.418**

The **coefficient **of kinetic **friction **will be equal to 0.418.

Friction is the **force **that prevents **solid **surfaces, fluid layers, and **material **elements from sliding **against **each other. There are various kinds of friction: **Dry **friction is the force that **opposes **the relative lateral **motion **of two in-touch solid **surfaces**.

Given that a 1.95 kg box sits on an **incline **of 24 ° with the **horizontal**. If the box **accelerates **down the incline at 0.245 m/s 2

The **coefficient **of **kinetic **friction will be **calculated **as,

F = ma

mgsinθ - μmgcosθ = ma

gsinθ - μgcosθ = a

μgcosθ = gsinθ - a

Solve for the **value **of the **coefficient **of friction,

μ = (gsinθ - a) / gcosθ

μ = (9.81sin24 - 0.245) / 9.81cos24

μ = 0.4178906...

μ = 0.418

Therefore, the **coefficient **of kinetic **friction **will be equal to 0.418.

To know more about the **coefficient of friction** follow

https://brainly.com/question/29719172

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The mass of a car is 625kg. Calculate the weight of the gravitational field strength is 10 N/kg.

**Ans: 62.5**

Explanation: [tex]F{net}[/tex] = m x a

1N = 1kg x 1m/ [tex]s{2}[/tex]

a plane crashes with a deceleration of 185 m/s. How many g’s is this?

**Answer:**

26 g's

**Explanation:**

Hope this helps~

Have a great day

Zero

Help me outttt pls and thanks

ANSWER: C. Weight

EXPLANATION: Weight is a non-contact force because gravity exerts its force through a field. An object does not need to be touching the Earth to have a weight.

EXPLANATION: Weight is a non-contact force because gravity exerts its force through a field. An object does not need to be touching the Earth to have a weight.

How does an emergency action plan benefit your workplace

Anything can happen at any moment. And if you have a plan for anything it will make things easier for you.

If a person climbed Mt. Everest has a mass of 105 kg and a weight of 625 N what would be the acceleration due to gravity?

The **acceleration **due to **gravity **would be** 5.95 m/s² **

A **force **is known to be a **push **or **pull **and it is the **change **in **momentum **per **time**. It can be expressed by using the relation.

From the parameters given:

Mass = 105 kgForce = 625 NBy replacing the given values into the above **equation**, we can determine the **acceleration.**

**∴**

625 N = 105 kg × acceleration.

[tex]\mathbf{acceleration = \dfrac{625 \ N}{105 \ kg}}[/tex]

acceleration = 5.95 N/kg

Since 1 N/kg = 1 m/²acceleration = **5.95 m/s² **

Learn more about **acceleration(a)** here:

https://brainly.com/question/14344386

Can someone help me with this problem?

**Answer:**

no

**Explanation:**

u flipped it i cant see

As the amount of charge on either of two charged objects increases, the electric force between the objects decreases.

O True O False

**Answer:**

False.

**Explanation:**

provided the distance between the forces remains the same, the force will *increase* with increased charge, whether attractive or repulsive.

Please respect! Can you answer this for me?

**Answer:**

ıf u find the answer can u comment me to notification thank u

**Explanation:**

We often refer to the electricity at a typical household outlet as being 120 V. In fact, the voltage of this AC source varies; the 120 V is __________.

The average value of voltage

Question 2 of 25

If JKLM is a parallelogram, what is the length of LM?

K

18

8

M

O A. 10

O B. 18

O C. 8

D. 26

SUBMIT

**Answer:its 10**

**Explanation:**

**Answer:**

8

**Explanation:**

Which is true of gamma radiation? O A. It increases the number of protons. O B. It is the heaviest of the three types. O C. It does not cause transmutation. O D. It has a positive charge.

**Answer: Your answer Is A)**

**Explanation: **

**Its direction of deflection shows it possitively charged**

**It brings one element into another by bombardment(transmutation)**

The density of water is 1000 kg/m the pressure pf water at 10 m depth is about

**Answer:**

pressure in liquids is given as:

P= hpg

where h is the depth

where p is the density

where g is 10

**Explanation:**

From the formula above

p = 10 X 1000 X 10

p = 100000N/m

help please i don’t know

**Answer:**

**Explanation:**

Potential energy at the top of the slide

PE = mgh = 49(9.8)(3) = 1,440.6 J

Energy converted to work of friction

W = Fd = 35(10) = 350 J

Converted potential that becomes kinetic energy

1440.6 - 350 = 1090.6 J

KE = ½mv²

v = [tex]\sqrt{2KE/m}[/tex]

v = [tex]\sqrt{2(1090.6)/49}[/tex]

v = 6.671902...

**v = 6.7 m/s**

When a hot metal cylinder is dropped into a sample of water, the water molecules

**Answer:**

I believe the answer is speed up.

**Explanation:**

this is because when water heats up the molecules move father apart from each other they speed up, eventually causing the water to boll

Calculate the net force acting on a body of mass 20 kg moving with a

uniform velocity of 4 ms-1.

**Answer:**

**0 N**

**Explanation:**

Uniform velocity means no acceleration and therefore no net force.

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