SUPER EASY!!!! WILL GIVE BRAINLIEST

How does a barometer work in measuring air pressure?
a.) A barometer has mercury in a dish. Air pressure pushes down on the mercury and forces it up into a glass tube. Thus, the higher the mercury rises in the tube, the higher the air pressure.
b.) A barometer contains fluid that expands or contracts based on the pressure. At a higher pressure, the fluid expands and rises in the tube.
c.) Barometers measure temperature, not pressure.
d.) A barometer contains a fluid that expands or contracts based on the pressure. At a higher pressure, the fluid contracts and lowers in the tube.

Answer:

C: Protons have an electrical carge but neutrons have no charge.

Explanation:

Protons are positively charged, neutrons are neutrally charged, and electrons are negatively charged.

Answer:

Correct answer: 2) 2p

Explanation:

Momentum

Momentum is a measurement of mass in motion or how much mass is in how much motion. The symbol for momentum is p and is defined as:

p = m . v

Where m is the mass of the object and v is the speed. Note this is the scalar version of the formula because both p and v are vectors.

Suppose the mass of the object is doubled to 2m, then the new momentum is:

p' = (2m) . v = 2 m . v

Or, equivalently:

p' = 2p

Correct answer: 2) 2p

Answer:

Explanation:

1

2

3

The third table shown in the diagram below can be modelled with the equation, y = x + 2, therefore, it represents a linear equation.

A linear function is a function whose graph represents a straight line when the points are plotted, and also can be modelled by the equation, y = mx + b.

b is the value of y when x = 0 (y-intercept)

m is the slope or unit rate.

Thus, the third table shown in the diagram below can be modelled with the equation, y = x + 2, therefore, it represents a linear equation (see attachment). The last table has a constant slope of -3, hence it represents a linear function.

Table of functions

From the given table, we need to determine which of the table is a linear table. To determine that, we must check which of the table has a constant rate of change

Looking at the last table;

Slope = -4-(-2)/2-1

Slope = -4+1/1

Slope = -3

Since the last table has a constant slope of -3, hence it represents a linear function.

Learn more about constant slope on:

https://brainly.com/question/24232895

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Answer:

1/3 M

I hope this helps :) sorry its late

Answer:

1/3 m

Explanation:

Answer:

It can cause floods if there is enough build up, and mudslides. I think...

Answer:

For accurate readings, a wind vane should be located high above the ground and away from buildings, trees, or any objects that could interfere with the true wind direction. ... This movement of air is what makes the wind blow.

Answer:

It needs to be high off the ground and away from trees or anything else that would be blocking it to get an accurate reading of the wind

Answer:

false

Explanation:

false, Newton's third law states that for every action (force) in nature, there is an equal and opposite reaction.

Answer:

Scientists use many skills as they investigate the world around them. They make observations by gathering information with

their senses. Some observations are simple. For example, a simple observation would be figuring out the color or texture of

an object. However, if scientists want to know more about a substance, they may need to take measurements.

Measurement is perhaps one of the most fundamental concepts in science. Without the ability to measure, it would be

difficult for scientists to conduct experiments or form theories. Not only is measurement important in science and the

chemical industry, it is also essential in farming, engineering, construction, manufacturing, commerce, and numerous

other occupations and activities.

The word “measurement” comes from the Greek word “metron,” which means “limited proportion.” Measurement is a

technique in which properties of an object are determined by comparing them to a standard.

Measurements require tools and provide scientists with a quantity. A quantity describes how much of something there is or

how many there are. A good example of measurement is using a ruler to find the length of an object. The object is

whatever you are measuring, the property you are trying to determine is the object’s length, and the standard you are

comparing the object’s length to is the ruler.

In general, scientists use a system of measurement still commonly referred to as the “metric system.” The metric system

was developed in France in the 1790s and was the first standardized system of measurement. Before that time, people

used a variety of measurement systems.

In 1960, the metric system was revised, simplified, and renamed the Système International d’Unites (International

System of Units) or SI system (meters, kilograms, etc.). This system is the standard form of measurement in almost

every country around the world, except for the United States, which uses the U.S. customary units system (inches,

quarts, etc.). The SI system is, however, the standard system used by scientists worldwide, including those in the

United States.

There are several properties of matter that scientists need to measure, but the most common properties are length and mass.

Length is a measure of how long an object is, and mass is a measure of how much matter is in an object. Mass and length

are classified as base units, meaning that they are independent of all other units. In the SI system, each unit of measure has

a base unit.

Explanation:

Some things scientists want to measure may be very large or very small. The SI, or metric, system is based on the

principle that all quantities of a measured property have the same units, allowing scientists to easily convert large and

small numbers. To work with such large or small numbers, scientists use metric prefixes. Prefixes can be added to base

units and make the value of the unit larger or smaller. For example, all masses are measured in grams, but adding

prefixes, such as milli- or kilo-, alters the amount. Measuring a human’s mass in grams would not make much sense

because the measurement would be such a large number. Instead, scientists use kilograms because it is easier to write

and say that a human has a mass of 90 kilograms than a mass of 90,000 grams. Likewise, one kilometer is 1,000 meters,

while one millimeter is 0.001 meters. The table below lists some common prefixes and the quantities they represent.

Answer:

Option B. 4

Explanation:

From the question given above, the following data were obtained:

Input force = 2.5 N

Output force = 10 N

Mechanical advantage (MA) =?

Mechanical advantage (MA) is simply defined as the ratio of the output force to the input force. Mathematically, it can be expressed as:

Mechanical advantage = Output : Input

MA = Output / Input

With the above formula, we can obtain the mechanical advantage of the pulley system as follow:

Input force = 2.5 N

Output force = 10 N

Mechanical advantage (MA) =?

MA = Output / Input

MA = 10/2.5

MA = 4

Thus, the mechanical advantage of the pulley system is 4.

Answer:

[tex]49.75\ \text{km/h}[/tex]

Explanation:

a = Acceleration of the automobile = [tex]1.77\ \text{m/s}^2[/tex]

t = Time taken = 6 s

v = Final velocity = 88 km/h = [tex]\dfrac{88}{3.6}=24.44\ \text{m/s}[/tex]

u = Initial velocity

From the linear equations of motion we have

[tex]v=u+at\\\Rightarrow u=v-at\\\Rightarrow u=24.44-1.77\times 6\\\Rightarrow u=13.82\ \text{m/s}=13.82\times 3.6=49.75\ \text{km/h}[/tex]

The initial speed when the automobile started accelerating is [tex]49.75\ \text{km/h}[/tex].

Answer:

a water

Explanation:

Answer:

[tex]\\ x_f=381.9m[/tex]

Work:

[tex]\\ x_f=x_0+v_0t+\frac{1}{2}at^2\\\\ x_f=v_0t+\frac{1}{2}at^2\\\\ x_f=(5m/s)(11.4s)+\frac{1}{2}(5m/s^2)(11.4s)^2\\\\ x_f=381.9m[/tex]

Hope this helps you. Kinematics can be tricky, but I'm sure you'll get a good grip on it. Have a good night.

Answer:

Option (b).

Explanation:

Two forces are acting perpendicularly on an object. We have, F₁ = 8.2 N and F₂ = 20.6 N

We need to find the net force acting on the object. When two forces are acting in perpendicular to each other, the net force on it is given by :

[tex]F=\sqrt{F_1^2+F_2^2} \\\\=\sqrt{8.2^2+20.6^2} \\\\=22.17\ N[/tex]

or

F = 22 N

Let [tex]\theta[/tex] is the angle. It can be given by :

[tex]\tan\theta=\dfrac{F_1}{F_2}\\\\\tan\theta=\dfrac{8.2}{20.6}\\\\=21.7^{\circ}[/tex]

or

[tex]\theta=22^{\circ}[/tex]

So, the net force is 22 N and the direction is 22° counterclockwise from F₁. Hence, the correct option is (b).

Answer:

because it helps you as a human being get healthy and

fit

Answer:

chemical change .....

Answer:

okay so what you will do is where is says red giant you will write all about what it talks about red giants only, and the box plantary nebulas you will write about what is says about only planetary nebulas. x- hope this helps :)

Explanation:

Answer:

wdym

Explanation:

Answer:

Concentrating solar power (CSP) plants use mirrors to concentrate the sun's energy to drive traditional steam turbines or engines that create electricity.

Explanation:

Hello!

Topic: Cinematic

For this we can say:

Initial velocity (u) = 26 m/s

Final velocity (V) = 0 m/s

Time (t) = 3 s

Distance (d) = ¿?

For calculate skidding distance, let's applicate the formula:

[tex]\boxed{d = \frac{(u+V)}{2} *t}[/tex]

Replacing:

[tex]d = (\dfrac{26m/s+0m/s}{2})*3s[/tex]

[tex]d =\dfrac{26m/s}{2} * 3s[/tex]

[tex]d = 18m/s * 3s[/tex]

[tex]d = 54\ m[/tex]

The distance is 54 meters (m)

Answer:

2000000000

Explanation:

2000000000

Answer:

118 to glass

Explanation:

Answer:

1.5

Explanation:

sin i / sin r = n

i = 135 - 90 = 45

r = 118 - 90 = 28

sin (45) / sin (28) = n

n= 1.5

Answer:

d = 4.47 [m]

Explanation:

To solve this problem we must make a free body diagram, where we can see the direction of the force acting with the appropriate angles. In the attached image we can see the free body diagram mentioned.

So in the image, we can see an angle of 65° with respect to the horizontal, therefore we can calculate the horizontal component of the force.

Fx = 22.4*cos (65)

Fx = - 9.46 [N] (it's negative because the force is pointing in the negative direction).

We can obtain the same result using 115° as the angle.

Fx = 22.4*cos (115)

Fx = 9.46 [N]

Now we know that work is defined as the product of the force by the distance, therefore we have.

Note: Always the work must be calculated with the force parallel

to the movement

W = F*d

Where:

W = work = 42.3 [J] (units of joules)

F = force parallel to the movement = 9.46 [N]

d = distance [m]

d = W/F

d = 42.3/9.46

d = 4.47 [m]

Answer:

Explanation:

the person on top of me is right it’s 4.47

Answer:

Galileo performed a famous experiment where he used a ball rolling on a ramp (inclined plane) to study the motion of objects under the influence of gravity. The ramp allowed him to make more precise measurements because the ball moved more slowly along the ramp than if it were simply dropped. Galileo discovered through this experiment that the objects fell with the same acceleration, proving his prediction true, while at the same time disproving Aristotle's theory of gravity (which states that objects fall at speed proportional to their mass). Galileo's conclusion from this thought experiment was that no force is needed to keep an object moving with constant velocity. Newton took this as his first law of motion. One result of the experiment surprised Galileo, and one surprises us. Galileo found that the heavy ball hit the ground first, but only by a little bit. Except for a small difference caused by air resistance, both balls reached nearly the same speed. And that surprised him. According to history, Galileo’s experiment on falling bodies largely contributed to Isaac Newton’s Law of Gravity. In Galileo’s experiment, he is said to have dropped balls from the Leaning Tower of Pisa. The balls were made of the same material but had different masses. Galileo set out to prove that the time it took for these objects to reach the ground would be the same. Galileo proved that objects reached the ground at the same time,

Explanation:

I think this is right & I hope this helped

Answer:

Explanat      Enthalpy of Vaporizationion: