What are 2 examples of convection, 2 examples of conduction and 2 examples of radiation plsss answer

Answer:

Explanation:

According to Newton's third law of motion, every action has an equal and opposite reaction. When a rocket starts, it releases some gases which exerts and equal and opposite force which helps the rocket to move.

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If a  car moving at 30 m / s has 900 kJ of kinetic energy, then the mass of the car would have been 2000 kilograms.

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.

As for the given problem, we have to find out the mass of the car if the car moving at 30 m/s has 900 kJ of kinetic energy.

Kinetic energy = 1 / 2 m v²

         900000 = 0.5 × m × 30²

                    m = 1000 / 0.5

                        = 2000 kilograms

Thus, If a  car moving at 30 m / s has 900 kJ of kinetic energy, then the mass of the car would have been 2000 kilograms.

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[tex]v = \frac{covered \: distance}{time \: of \: the \: covered \: distance} \\ [/tex]

[tex]v = \frac{2400}{55} \\ [/tex]

[tex]v = \frac{24 \times 100}{5 \times 11} = \frac{24 \times 20}{11} = \frac{480}{11} \\ [/tex]

[tex]v = 43.63 \: \: \frac{m}{s} [/tex]

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And we're done...

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Answer:

The average speed is about 44 m/s

Step by Step:

[tex]S= \frac{distance}{time}\\ d= 2400m\\t = 55 seconds\\\\\frac{2400m}{55 seconds}\\\\= approximately\\ 44 m/s[/tex]

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Answer:

Explanation:

The momentum of an object given it's mass and velocity can be found by using the formula

From the question

mass = 0.25 kg

velocity = 15 m/s

We have

momentum = 0.25 × 15

We have the final answer as

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Answer: The answer would be 454 miles.

Explanation: You multiply the average speed by time travelled

Answer:

C

Explanation:

Option  D is the correct answer.

Usually in the research labs there were some rules and we have follow those for our safety measures. Some importance rules while doing experiments were:

Hence, option D is the correct answer.

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Answer:

The correct answers are Choices 'A' and 'B'.

Explanation:

The correct answers are Choices 'A' and 'B'.

Static equilibrium means that the object is not moving relative to ​a given frame of reference.

Choice 'A' Linear Momentum = →p=0

is required. "Not moving" means the velocity  

v must be 0(otherwise the object would be moving across the reference frame), so an object's linear momentum (which is its mass times its velocity) must be 0.

Choice 'B' Angular Momentum = →L=0 is required. "Not moving" also means that the object can not be rotating or spinning inside the reference frame, which means the rotational velocity ω must be 0. So an object's angular momentum (which is its mass times its rotational velocity) must be 0 .

Choice 'C' Change in Energy  is true (this is known as conservation of energy), but it is not a requirement of static equilibrium because "not moving" is not the same as "isolated."

There are many forms of energy, many of which are not related to movement. For example, a light bulb in a stationary lamp is in static equilibrium, but if the light is turned on .

Similarly, when you add gasoline to your car at a gas station, the car must be in static equilibrium, but the addition of the gasoline from outside the car changes the Total Energy of the car.

Choice 'D' Net Force ≠0 is a non-equilibrium condition because by Newton's second law of motion, so any non-zero net force will cause an acceleration, and acceleration is not a state of static (or dynamic) equilibrium.

Summer in the northern

Winter in the southern

Answer:

There are approximately 16 dozes in the final product

Explanation:

The given parameters are;

The viscous lidocaine 2% 30 mL + Maalox 60mL + Diphenhydramine (12.5 mg/5mL elixir)75 mg + Carafate 1gm/10mL 40mL

The total volume becomes;

30 mL + 60 mL + 5 × 75/12.5 mL + 40 mL = 160 mL

1 Teaspoon = 4.928922 mL

Therefore, 2 teaspoon = 2 × 4.928922 mL = 9.857843 mL

Which gives;

The number of doses in 160 mL = 160 mL/(9.857843 mL) = 16.2307312 doses

Which is approximately 16 doses

Therefore, there are approximately 16 dozes in the final product.

Answer:

The input force is the force that when you push down and the output force is the stable going into the paper.

Explanation:

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Answer: yes

Explanation:

because so

Answer:

electrons

Explanation:

it just does

Answer:

Independent variable: method of teaching.

Dependent variable: summer sessions.

confound variable: improvement.

Explanation:

Independent variable is described as a variable that is being manipulated and changed in order to see its effect on the dependent variable. The dependent variable is directly affected by the independent variable.

The dependent variable is described as a variable that is being tested by an experimenter in particular research or experiment.

Confound variable is determined as a "third variable" in an experiment which is responsible for examining an already existing "cause-and-effect" relationship.

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Work Shown:

velocity = (change in distance)/(change in time)

velocity = (200.0 meters)/(19.32 seconds)

velocity = (200.0/19.32) meters per second

velocity = 10.351966873706 meters per second

velocity = 10.35 m/s  after rounding to 4 sig figs

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Momentum = (mass)*(velocity)

Momentum = (77 kg)*(10.35 m/s)

Momentum = (77*103.5) kg m/s

Momentum = 796.95 kg m/s

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Edit: Corrected from 2000.0 to 200.0

Answer:acceleration

Explanation:

We define acceleration as the rate of change of velocity. So if a moving object wants to change its velocity, it needs to accelerate.

Thus the statement would be:

"If a race car wants to change its velocity then a net force is  required to cause the necessary acceleration".

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Acceleration defines how the velocity changes, suppose that you are in one dimension and you move with positive velocity, if you have also positive acceleration your velocity will increase.

If you have negative acceleration your velocity will decrease.

But if we go to 2 dimensions we can see that acceleration is way more complex, because it is what allows the changes of direction of motion (by changing the direction of the velocity).

Now, acceleration comes from Newton's second law of motion:

F = m*a

Force equals mass times acceleration.

Then if we know that a car wants to change its velocity, it needs to apply a force such that it causes the necessary acceleration to change the velocity as wanted.

From this we can see that the complete statement would be:

"If a race car wants to change its velocity then a net force is  required to cause the necessary acceleration"

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Explanation:

Ventilation

Answer:

Weight and Mass !!!!!!

Explanation:

Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

Answer:

The ball will be travelling downward with a speed of 9.8 m/s.

Explanation:

The ball will be travelling downward with a speed of 9.8 m/s.

Explanation:

The acceleration of the ball will be a constant  

9.8 m s 2

(downward), regardless of whether the ball is travelling upward or downward.

The equation that makes this calculation simplest is

v f = v i − g ( Δ t )  

where the negative sign has been used to account for the opposite directions of  v i  and  g . After 3 seconds, v f = 19.6 − ( 9.8 ) ( 3 ) = 19.6 − 29.4 = − 9.8 m s

The negative result tells us that the ball is on its way downward by this time (consistent with our choice of a negative value for the downward acceleration of gravity).

Answer:

Speed describes how far an object moves in a given amount of time (for example, miles per hour).

Explanation:

Answer:

He needs to throw the trash before he gets to the Trash can because he

needs some force for it to be able to go in because it he throw it after he passed it, it would not make it because your going a certain speed, and if you try to throw it when it is right in front of you, it will still miss because it is still going the same speed as the car.

Explanation:

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Answer:

Average speed of the car is 36.36 miles per hour

Explanation:

It is given that,

Total distance traveled by the car, d = 200 miles

Total time taken, t = 5.5 hours

In this case, we have to find the average speed of the car. Average speed of the car is defined as the total distance divided by total time taken. Mathematically, it can be written as :

s = 36.36 miles per hour

Hence, the average speed of the car is 36.36 miles per hour.  \

Answer:

Kilogram and symbol kg.

Pollination is the transfer of pollen for plant fertilization

The correct responses are as follows;

The description of the changes that take place is included in this response

6 (i) The circuit arrangement is a parallel circuit arrangement

(ii) The advantages are;

(iii)  Lamp C glows the brightest

(iv) The total resistance is 4 Ω

The reason roe the above responses are as follows:

During the course of pollination, the pollen, through movement, finds it way to the germ-cell in the female ovary, where it fuses with the female egg (gamete) located inside the ovule

The resulting fertilization produces the zygote, which forms an embryo inside the ovule by dividing several times

A seed is formed from the ovule when it develops a tough coat, and by rapid growth a fruit is formed as the ovary matures

5 (i) The kind of combination, where all the wires that enters the bulb are joined on one side of the bulbs, and all the wires that comes from the bulbs are joined on the other end of the bulb, before joining the circuit is a parallel connection

(ii) The advantages of bulbs connected in parallel are;

(iii) The bulb that glows brightest is given by the bulb that consumes the most energy per unit time, and therefore, the bulb that has the most power

Power consumed by each bulb is given as follows;

Bulb A, [tex]P_A[/tex] = 3 A × 60 V = 180 W

Bulb B, [tex]P_B[/tex] = 4 A × 60 V = 240 W

Bulb C, [tex]P_C[/tex] = 5 A × 60 V = 300 W

Bulb D, [tex]P_D[/tex] = 3 A × 60 V = 240 W

The highest power used by a bulb is 300 W, by bulb C

Therefore;

Bulb C is the brightest bulb

(iv) The total resistance of the circuit is given as follows;

[tex]Total \ resistance =\dfrac{Circuit \ voltage}{Total \ current}[/tex]

Total current, [tex]I_{tot}[/tex] = 3 A + 4 A + 5 A + 3 A = 15 A

Circuit voltage, V = 60 V (Given)

Therefore, we have;

[tex]Total \ resistance =\dfrac{60 \, V}{15 \, A} = 4 \, \Omega[/tex]

The total resistance is 4 Ω

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Explanation:

That`s is the answer, just check

Answer:

both magnitude and direction

Explanation:

The worker's pull on the handle of the cart is best described as the force having both magnitude and direction.

In this case, the worker is pulling the cart towards a specified direction.

Therefore, the fitting choice is both magnitude and direction.

Answer:

i think this is the answer

Explanation:

Time = (distance) / (speed)

Time = (26 meters) / (8 meters/hour)

Time = 3.25 hours or 3 hours 15 minutes