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So I already know A is where the suns energy is produced.

Here are the options for the rest :


• region of the sun that is visible from earth

• appears as a red ring around the sun right before and after the peak of a total solar eclipse

• region that energy travels to through radiation ( movement of high energy particles )

• appears as a white ring or crown around the sun at the time of total solar eclipse

so please tell me the answer for each ( A, B, C, D ) thank you !

A fertilized cell divides many times to form an embryo.  - true

Human reproduction requires two reproductive cells from each parent.  - true

Growth is caused by cells in your body dividing and making new cells.  - false

A cell nucleus contains DNA, which is a chemical code for all inherited traits.  - true

Answer:

true false true true

Explanation:

i took the quiz on keystone school and i didnt pass but i saw the end awnser

Answer:

I think it is velocity.

because velocity shows the direction and magnitude .

Answer:

Velocity

Explanation:

This is a case of velocity, since velocity apart from having magnitude also has direction. the person walks at 8 [m/s] to the North.

When we talk about speed, we only talk about the magnitude without taking into account the direction.

Answer: D. 332n

Explanation: I took the quiz and that was the correct answer

Answer:

d=3.4m

Explanation:

From principle of equilibrium,

TOTAL C.WISE MOMENTS = TOTAL A.C.WISE

10N×d = 2N ×2m + 6N×5m

10Nd =4Nm+ 30Nm

10Nd=34Nm

10N 10N

d=3.4m

The system is in equilibrium, calculate the missing distance d=3.4 m.

Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude.

From principle of equilibrium,

TOTAL C.WISE MOMENTS = TOTAL A.C.WISE

10 N×d = 2 N ×2 m + 6 N×5 m

10 Nd = 4 N m+ 30 N m

10 Nd = 34 N m

d = 3.4 m

The system is in equilibrium, calculate the missing distance d=3.4 m.

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Answer:

B

Explanation:

You need a specific force to change the momentum of something.

Hope this helps!

Answer: 1700

Explanation:

Answer:

no

Explanation:

the metal spoon would be higher temperature

Answer:

Yes

Explanation:

Answer:

0 m/s

Explanation:

In this problem,

A ball thrown vertically upward reaches a maximum height of 30 meters above the surface of Earth. We need to find the speed of the ball at the maximum height. When an object reaches its maximum height, after then it starts to decrease its speed. As a result, the speed of the ball will be equal to 0 m/s.

The speed of the ball thrown upwards is zero when the object reaches maximum height.

The given parameter:

The velocity of an object thrown upwards decreases with time because the object is moving against gravity, and the eventually becomes zero when the object reaches maximum height.

[tex]v_f = v_0 - gt= 0[/tex]

Thus, the speed of the ball thrown upwards is zero when the object reaches maximum height.

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Explanation:

Compounds are substances composed of two or more kind of atoms or elements joined together in a definite grouping. The properties of compounds are distinct from those of the individual elements that are combined in its make up.

There are several millions of compounds that are known. Compounds are derived from elements. They are usually represented by chemical formulae.

Answer:

A vegetarian diet that includes no meet is the best description of a balanced diet

Answer:

I should be B

Explanation:

extra characters lolhrhhdhfhdjdbfjsjf

Answer: 1.6 hours

Explanation: 40/1.6 = 25

An actual velocity is measured directly from an object's displacement-time graph while a theoretical velocity is calculated by using a mathematical equation or scientific theory.

Velocity refers to the rate of change in displacement (distance) of an object with respect to time.

Also, velocity is a vector quantity and this simply means that, it has both magnitude (speed) and direction.

Mathematically, velocity is given by the formula;

[tex]Velocity =\frac{displacement}{time}[/tex]

In an experiment, there are two (2) main types of velocity used and these include:

In conclusion, an actual velocity is measured directly from an object's displacement-time graph while a theoretical velocity is calculated by using a mathematical equation or scientific theory.

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Explanation:

Because When placed on hot water, the thermometer itself expands slightly first so the Mercury appears to be descending. After the thermometer expands slightly, the Mercury expands. Hence, Mercury column in thermometer first decends slightly and then rises when placed in hot water

Answer:

Any liquid in a container, when heated, at first it's level goes down a little, then rises.

It's because the container volume increases first, before the liquid gets hot. So the level goes down. It takes a little longer to heat up the whole volume of the liquid. A little later, as the liquid gets heated up, it expands faster than the container and the level rises.

In general, coefficient of thermal expansion is higher for liquids than solids.

This is why the mercury level first goes down then rises.

Answer:

Newton's second law of motion states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass. If the only force acting on an object is due to gravity, the object is in free fall.

Explanation:

Hope this helps :)

Answer:

3.6 N

Explanation:

The magnitude of centripetal force in this case is equal to the magnitude of tension in the spring.

The formula is :

T= mv²/r ------where T is tension

m= mass of object =0.8 kg

v= velocity of object {tangential velocity} = 3.0 m/s

r= length of string = 2m

Applying the formula with real values;

T= mv²/r

T= {0.8 * 3²} / 2

T= { 7.2}/2 = 3.6 N

Answer:

3: I can´t see the text/image, but it depend on the mass and the force applied to the ball, if both are too high, it will be harder to make a home run. (Second law)

4:It would be easier to make a home run because there is no interruption between the ball and the space the same travels. (Third law)

Explanation:

Answer:

hope this helps

Explanation:

solid particles are arranged according to the size of the object

while liquid particles are arranged how they move freely together in the object they are in.

while gas particles are arranged scatterly like they spread.

Answer: C

Explanation:

Gravity is acting equally on both objects causing the same vertical velocity because they are the same objects. The object launched horizontally off a cliff has a longer range because of the greater initial horizontal velocity

Hope this helps you, sweetie!

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The answer to the question related to the time for two balls to reach the ground is option C, the two balls will reach the ground at the same time because the horizontal and vertical planes of motion are independent of each other, and they are also released from the same height.  

When a ball is dropped, knowing the height we could find the time with the following equation:

[tex] y_{f} = y_{i} + v_{i_{y}}t - \frac{1}{2}gt^{2} [/tex] (1)

Where:

[tex] y_{f} [/tex]: is the final height

[tex] y_{i} [/tex]: is the initial height

[tex]v_{i_{y}}[/tex]: is the initial speed of the ball in the vertical direction = 0 (it is dropped)

g: is the acceleration due to gravity

When the ball is launched horizontally from the same height, we could find the time with equation (1) since the acceleration in the horizontal direction is zero and the initial velocity in the vertical direction is also zero.

The horizontal motion is related to the equation:

[tex] x = v_{i_{x}}*t [/tex]   (2)

We can notice in both cases that the ball is accelerated only by gravity.

Let's evaluate each statement

A) This statement is incorrect because the path is the same for both cases. The ball is dropped and launched from the same height.

B) This statement is also incorrect. The velocity of the dropped ball is the same as the velocity of the launched ball because the ball is accelerated only by gravity.

C) This statement is correct. We can see that we would get the same time in equation (1) since [tex]v_{i_{y}}[/tex], [tex]y_{f}[/tex], and [tex]y_{i}[/tex] is the same for the dropped ball and the launched ball.  

D) This statement is incorrect. The nature of motion is related to a freefall motion in both cases.  

Therefore, the answer is option C.

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I hope it helps you!                          

Answer:

Current, I = 8 Amps

Explanation:

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

[tex] V = IR[/tex]

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Given the following data;

Resistance, R = 30 ohms

Voltage, V = 240V

To find the current;

[tex] I = \frac {V}{R} [/tex]

[tex] I = \frac {240}{30} [/tex]

Current, I = 8 Amps

Therefore, the current of the dryer is 8 Amperes.

Answer:

Acceleration, [tex]a=0.5\ m/s^2[/tex]

Explanation:

The question says " A body travels with a speed of 10 m / s then increases to 15 m / s, this increase was during 0 s to 10 s, what is the acceleration of the body? ".

Initial speed, u = 10 m/s

Final speed, v = 15 m/s

Time interval, t = 10 s

We need to find the acceleration of the body. It is equal to the rate of change of velocity. It can be given by the formula as follows :

[tex]a=\dfrac{15-10}{10}\\\\a=0.5\ m/s^2[/tex]

So, the acceleration of the body is [tex]0.5\ m/s^2[/tex].

Answer:

m = 20,000 kg

Explanation:

Force, [tex]F=2.5\times 10^4\ N[/tex]

Acceleration of the shark, [tex]a=1.25\ m/s^2[/tex]

It is required to find the mass of the shark. Let m is the mass. Using second law of motion to find it as follows :

F = ma

Putting the value of F and a to find m

[tex]m=\dfrac{F}{a}\\\\m=\dfrac{2.5\times 10^4}{1.25}\\\\m=20,000\ kg[/tex]

So, the shark's mass is 20,000 kg.

Explanation:

A machine is a device that does work. Most machines consist of a number of elements, such as gears and ball bearings, that work together in a complex way. Nonetheless, no matter how complex they are, all machines are based in some way on six types of simple machines. These six types of machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw.

Answer:

ahh yes you are so smart and I hope you get a good job when you are older