PHYSICS MIDDLE SCHOOL

Air Mass is a large body of air that has the same ____________ and ___________ throughout.

Answers

Answer 1
Answer: Characteristics? I think for first blank

Related Questions

What is the force that opposes the movement of an object through water??
I'm giving out a lot of points for whoever helps me and answers correctly! 3 questions to answer! Please answer them ALL!!! :D1 - Which of these is a good example of Newton's First Law of inertia?A) A ball sits motionless on the groundB) A ball gathers speed as it rolls downhillC) A ball accelerates as it falls out of a classroom windowD) A ball returns to your hand after you throw it up in the air2 - The space shuttle is located exactly half way between the earth and the moon. Which statement is true regarding the gravitational pull on the shuttle?A) The moon pulls more on the shuttleB) The earth pulls more on the shuttleC) Both are equal due to equal distancesD) Both are equal due to the mass of the shuttle3 - In which situation is the acceleration of the car negative?A) The velocity of the car was 75/h over 4 hoursB) The velocity of the car reduced from 50 km/h to 35 km/h over one minuteC) The velocity of a car increased from 40 km/h to 75 km/h over 15 minutesD) The velocity of a car was 45 km/h at 2:00 pm and at 4:00 pm the velocity of the car was 85 km/h
Calate the force nessacy to accerate a 0.14 kg hardball at a rate of 100 m/s
A rock is placed into a graduated cylinder containing 80 mL of water. What is the volume of the rock if the water level rises to the 120 mL mark?
The slope of the line on a speed-time graph tells the speed.Please select the best answer from the choices providedTF

Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has an average speed of 6.0 cm per year.(a) What distance does it move in 25 seconds at this speed?
What's the formula for this problem?

Answers

For this problem, we use the following expression:


Speed = distance / time

Distance = Speed * time

Since the problem tells us the speed of the plates, we know that


Speed_plates = 6.0 cm/year


Which is equal to


Speed_plates = 6.0 cm/365 days = 6.0 cm/(365*24 hours)


Speed_plates = 6.0 cm/(365*24*60 minutes)


Speed_plates = 6.0 cm/(365*24*60*60 seconds)


Speed_plates = 190.258 E -9 cm / s


We multiply by 25, to get the distance traveled after 25 seconds


Distance traveled = 4.756 E-6 cm

Which body system processes into a useable source of energy

Answers

possibly limpathic or respiratory system

(PLEASE HELP) What area of the Earth's mantle is the densest?A.The entire mantle has the same density.
B.the area nearest to the Earth's crust
C.the area in-between the Earth's crust and core
D.the area nearest to the Earth's core

Answers

The area of the Earth'smantle that is the densest is the area nearest to the Earth's core. The correct option is D.

What are the layers of the Earth?

The earth is divided into three layers: the crust, the mantle, and the core. This is the earth's outer layer, and it is composed primarily of solid rock, primarily basalt and granite.

Oceaniccrust and continental crust are the two types of crust. The oceanic crust is denser and thinner, and it is mostly made up of basalt.

The five Earth systems (geosphere, biosphere, cryosphere, hydrosphere, and atmosphere) interact to create the environments we know.

The core is the earth's densestlayer, with a density ranging from 9.5 to 14.5g/cm3.

The Core is divided into two layers: the inner core and the outer core. The interior core is solid, while the exterior core is liquid (or semi-liquid).

Thus, the correct option is D.

For more details regarding the layers of the Earth, visit:

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The area nearest to the earth's core is the densest.. 
So your answer would be letter choice ( D ) . . . 

Hope it Helped :) 

Kaya collects the data shown in the table. What is the resistance in the circuit? 0.05 1.8 5.7 20

Answers

Kaya collects the data where the voltage is 6 V also the current is 0.3 A then the resistance in the circuit will be 20 ohms. Hence, option D is correct.

What is Electrical energy?

When put in an electromagnetic field, charged matter experiences a force due to the fundamental property of electric charge. Positive or negative electrical ions are possible. When two charges are in opposition to one another, they repel one another.

The term "neutral" refers to an object that has no net charge. The early understanding of the way charged particles interact is now referred to as classical electrodynamics, and it is still true for issues that do not demand taking into account quant phenomena.

As per the given information in the question,

Voltage, V = 6 V

Current, I = 0.3 A

Use the equation of ohm's law,

V = RI

6 V = R(0.3)

R = 6/0.3

R = 20 Ω.

To know more about Electrical Energy:

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Answer:

1.8

Explanation:

A 75 kg baseball player runs at a velocity of 6 m/s before sliding to a stop at second base. a. What is the kinetic energy of the runner before he begins his slide? b. What is the kinetic energy of the runner once he reaches the base? c. What is the change in the kinetic energy of the runner? d. How much work is done by friction in stopping the runner? e. If the runner slides for 2 m, what is the force of friction that acts upon him?

Answers

Answer:

a. \displaystyle k_o=1350\ J

b. \displaystyle k_1=0\ J

c. \Delta k=-1350\ J

d. W=-1350\ J

e. F=-675\ N

Explanation:

Work and Kinetic Energy

When an object moves at a certain velocity v0 and changes it to v1, a change in its kinetic energy is achieved:

\Delta k=k_1-k_0

Knowing that

\displaystyle k=(mv^2)/(2)

We have

\displaystyle \Delta k=(mv_1^2)/(2)-(mv_0^2)/(2)

The work done by the force who caused the change of velocity (acceleration) is

\displaystyle W=(mv_1^2)/(2)-(mv_0^2)/(2)

If we know the distance x traveled by the object, the work can also be calculated by

W=F.x

Being F the force responsible for the change of velocity

The 75 kg baseball player has an initial velocity of 6 m/s, then he slides and stops

a. Before the slide, his initial kinetic energy is

\displaystyle k_o=(mv_0^2)/(2)

\displaystyle k_o=((75)6^2)/(2)

\boxed{\displaystyle k_o=1350\ J}

b. Once he reaches the base, the player is at rest, thus his final kinetic energy is

\displaystyle k_1=((75)0^2)/(2)

\boxed{\displaystyle k_1=0\ J}

c. The change of kinetic energy is

\Delta k=k_1-k_0=0\ J-1350\ J

\boxed{\Delta k=-1350\ J}

d. The work done by friction to stop the player is

W=\Delta k=k_1-k_0

\boxed{W=-1350\ J}

e. We compute the force of friction by using

W=F.x

and solving for x

\displaystyle F=(W)/(x)

\displaystyle F=(-1350\ J)/(2\ m)

\boxed{F=-675\ N}

The negative sign indicates the force is against movement

Q2. In a 4x100 mrelay race, total track length is 200m and time taken by one particular group is 50.2 s. What is
the average speed and average velocity of that group?

Answers

A " 4 x 100 m " race means that four runners each run 100 meters, for
a total of 400 meters ... very close to a quarter mile.

On a 200-meter track, each runner does halfway around the track, and
the whole team of four runners does twice around the track. 

This team did the whole thing in 50.2 seconds. The average time for each runner
was 50.2/4 = 12.55 seconds.
The average speed of each runner was (400 meters)/(50.2 seconds) = 7.968 m/s .

Velocity is a speed and a direction.  We have the speed, leaving only the puzzle of
what to do about the 'average' direction.

Here's a sneaky but easy way to dispense with the whole issue:
Define the average velocity (vector) as  (total displacement vector)/(total time).

Since the fourth runner finished in exactly the same spot as the first runner
began, the total displacement is zero, and therefore so is the average velocity.
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