HELP AGAIN 10 POINTS

Answer:

Blood group

Explanation:

Answer:

A. Blood group.

Explanation:

They could purely random genetic changes.

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The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).

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Answer:r other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by

Explanation:

Activity: Is it the same?!

Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by scattering the reflected light rays in all directions.

Some of the earliest accounts of light reflection originate from the ancient Greek mathematician Euclid, who conducted a series of experiments around 300 BC, and appears to have had a good understanding of how light is reflected. However, it wasn't until a millennium and a half later that the Arab scientist Alhazen proposed a law describing exactly what happens to a light ray when it strikes a smooth surface and then bounces off into space.

In this activity you will be working as an engineer that is working to modify different kinds of digital cameras and to study the effect of changing incident angle on the reflected angle.

Method

Explain the steps of your experiment and identify the scientific variables:

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• Independent Variable

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• Dependent Variable

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sciences by concept myp 3 formative assesment.

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The statement that accurately describes viscosity is option D: Attractive forces between molecules at the surface cause a liquid to resist spreading out. Option D

Viscosity is a measure of a fluid's resistance to flow. It quantifies how easily a fluid can be deformed or how readily it flows. In liquids, viscosity arises from the cohesive forces between molecules.

When molecules in a liquid are attracted to each other, they tend to stick together and resist movement. At the surface of the liquid, there is a greater degree of attractive forces between the molecules since they have fewer neighboring molecules to interact with.

This surface tension creates a resistance to the spreading out of the liquid and causes it to exhibit a more rounded or droplet-like shape.

The attractive forces between molecules at the surface of a liquid contribute to the cohesive forces within the liquid as a whole, resulting in a higher viscosity.

The stronger the attractive forces between the molecules, the higher the viscosity of the liquid. For example, honey has a higher viscosity compared to water because the molecules in honey have stronger attractive forces, making it flow more slowly.

Option A is not an accurate description of viscosity. Viscosity is not solely determined by the size of the molecules in a liquid but rather by the strength of the attractive forces between the molecules.

Option B describes electrical conductivity, not viscosity. It refers to a material's ability to slow down or impede the flow of electrons.

Option C describes the property of malleability, not viscosity. It refers to a material's ability to be shaped into a thin sheet without breaking.

Therefore, option D accurately describes viscosity by highlighting the role of attractive forces between molecules at the surface of a liquid in resisting the spreading out of the liquid

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Answer: it is A

Explanation: A p e c

Answer:

Explanation:

KE = 1/2mv^2

KE = 1/2(2.1)(10)^2

KE=105N

Answer:

The material is called a Lubricant.

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Answer:

It would produce fat..........

Answer:

That is because light travels much faster than sound waves. … It takes approximately 5 seconds for the sound to travel 1 mile.

Explanation:

If the thunder follows the lightning almost instantly, you know the lightning is too close for comfort.

The Answer is B because primary consumers need to get their food from plants.

Answer:

The Answer is B because primary consumers need to get their food from plants

Explanation:

Explanation:

a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat

Answer:

B)20%

Explanation:

only the 2j of energy is getting used out of 10j.all other 8j are wasted as heat.

therefore the efficiency=2/10*100=20

Answer:

Element #1

protons = 1

neutrons = 0

electrons = 1

atomic number = 1

atomic mass = 1

Element #2

protons = 2

neutrons = 2

electrons = 2

atomic number = 2

atomic mass = 4

Element #3

protons = 3

neutrons = 3

electrons = 3

atomic number = 3

atomic mass = 6

Explanation:

Atomic mass = proton = electrons at neutral state

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Answer:

14:30:00

Explanation:

because the speed of propagation of seismic waves is at 500

Answer:

217 N

Explanation:

Answer:217N

Explanation:

Answer:

5 m/s

Explanation:

The formula of speed is : distance/time taken.

The skateboarder covered a distance of 20 meters in 4 seconds. So,

Distance = 20 meters

Time Taken = 4 seconds

Speed = 20/4 = 5 m/s

Answer:

Final temperature, T2 = 131895°C

Explanation:

Given the following data;

Mass = 50g

Initial temperature = 20°C

Quantity of heat = 5275J

Specific heat capacity = 0.50 J/g°C

To find the final temperature;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

Making dt the subject of formula, we have;

[tex] dt = \frac {Q}{mc} [/tex]

Substituting into the equation, we have;

[tex] dt = \frac {5275}{50*0.50} [/tex]

[tex] dt = \frac {5275}{25} [/tex]

dt = 131875°C

Now, the final temperature T2 is;

But, dt = T2 - T1

T2 = dt + T1

T2 = 131875 + 20

T2 = 131895°C

The final temperature when a glass piece absorbs heat  5275 joules  will be  T2= 231 C

The heat capacity is defined as the amount of heat any material can absorb when the temperature is changed to unit quantity.

Given the following data;

Mass = 50g

Initial temperature = 20°C

Quantity of heat = 5275J

Specific heat capacity = 0.50 J/g°C

To find the final temperature;

Heat capacity is given by the formula;

[tex]Q= mc(T_2-T_1)[/tex]

Where;

Q = represents the heat capacity or quantity of heat.

M= represents the mass of an object.

C= represents the specific heat capacity  

T1= initial temperature

T2 = Final temperature

Substituting into the equation, we have;

[tex]Q=mc(T_2-T_1)[/tex]

[tex](T_2-T_1)=\dfrac{Q}{mc}[/tex]

[tex](T_2-T_1)=\dfrac{5275}{50\times 0.50}[/tex]

[tex]T_2=211+T_1[/tex]

[tex]T_2=211+20=231 ^oc[/tex]

Thus the final temperature when a glass piece absorbs heat  5275 joules  will be  T2= 231 C

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Answer:

your answer is 21 n

Explanation:

Answer:

The energy that it starts with at the top of the inclinede Plane

Explanation:

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Answer:

D. The reflected ray makes an angle of 90°.

Explanation:

Answer:

your answer is 11

Explanation:

Answer:

154 N horizontal (to the right) 15.9 N vertical (up)

Explanation:

I got it right :)

Answer:

1) Image

2) virtual

i hope its right ! :)

Explanation:

Answer:

Option (c) Acceleration is 1/2x the original acceleration

Explanation:

To know the the correct answer to the question, we shall determine the acceleration of the box in each case.

Case 1:

Mass (m) = m

Force (F) = 20 N

Acceleration 1 (a₁) =?

F = ma₁

20 = m × a₁

Divide both side by m

a₁ = 20 / m

Case 2:

Mass (m) = 2m

Force (F) = 20 N

Acceleration 2 (a₂) =?

F = ma₂

20 = 2m × a₂

Divide both side by 2m

a₂ = 20 / 2m

a₂ = 10 / m

Finally, we shall determine the acceleration of the box after the mass was doubled. This can be obtained as illustrated below:

Acceleration 1 (a₁) = 20 / m

Acceleration 2 (a₂) = 10 / m

a₂ : a₁ = 10 / m : 20 / m

a₂ / a₁ = 10 / m ÷ 20 / m

a₂ / a₁ = (10 / m) × (m / 20)

a₂ / a₁ = ½

Cross multiply

a₂ = ½a₁

Thus, the acceleration of the box after the mass was doubled is ½ times the original acceleration.

Answer:

no

Explanation:

Answer:

The answer is Kinetic Energy.

Explanation:

Kinetic energy basically means energy of mass that's in motion.