PLEASE RESPOND I NEED FAST THANK YOU GIVING LOTS OF POINTS WILL GIVE BRAINLIEST

The SI unit of mass is the kilogram

Answer:

x(t) = t^2 - 2 t + 1       given

v = dx / dt = 2 t - 2 = 0

t = 1  

It comes to rest after 1 second

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The Correct choice is : D

Neutrons and Protons are collectively known as Neucleons because they are found in nucleus of the cell and they have almost equal mass, [ but neutron has slightly greater mass than proton ]. also, Neutrons are neutral particle with no charge on them, where as protons have positive charge on them. making nucleus positively charged altogether ~

Answer:

Option D

Explanation:

Answer:

fv nfv f n f vjrkfv frnv thrfn htrfn vt

Explanation:

v ntv tfrv tn vtv jr4v t5o vtv tv tv

Cause of high probability of accidents of loaded vehicles in over speed effected by momentum on the basis of first law of motion.

When we are standing inside a bus and it brakes abruptly, due to inertia, we are thrown forward. When a car is going around a curve it is necessary for a force to act, otherwise the car will go in a straight line.

the cause of high probability of accidents of loaded vehicles in over speed occurs large amount of momentum.

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Answer:

Explanation:

The mass written on the periodic table is an average atomic mass taken from all known isotopes of an element. This average is a weighted average, meaning the isotope's relative abundance changes its impact on the final average. The reason this is done is because there is no set mass for an element.

Electrical conductivity often decreases, when elements receive additional electrons in their outer shells. As a result of the valence shell being filled, the number of movable electrons decreases.

Electrons are mobile charges in the conduction band while holes are mobile charges in the valence band.

Current flow in a semiconductor is caused by charge carrier migration in both the conduction and valence bands.

Which creates a net motion of positively charged carriers in the same direction as the field and negatively charged carriers in the opposite direction as a result of the force.

The outermost electrons in metals are not bonded to each atom which is shared by many atoms. This decentralization is what allows metals to conduct electric currents.

Hence, the elements gain more electrons in their outer shells, and their electrical conductivity generally decreases.

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The answer is a) Teres Major Muscle

[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]

[tex] \sf \red{When \: baking \: soda \: is \: mixed \: with \: lemon \: juice, \: bubbles \: are \: formed \: with \: the \: evolution \: of \: a \: gas.}[/tex]

[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. The gas is formed in the reaction is Carbon dioxide. [tex] CO_{2}[/tex] is formed.

The change which happened in this reaction is a chemical change.

[tex] \boxed{ \frak \green{Explanation}}[/tex]

Since, in chemical change we can't bring a substance to it's actual form how it was in earlier.

Examples: burning of paper is chemical, since we can't get the fine paper again after it is burnt.

Thus, the above reaction is also a chemical change, since we can't get back the lemon juice how it was earlier.

[tex] \boxed{ \frak \red{Brainlysamurai}}[/tex]

Answer:

65

Explanation:

The energy needed to vaporize 100 grams of ice at starting at 0°C is  300.83 kJ.

When the temperature is increased , the body or particle is said to be heating.

Given is the mass of water =100g =0.1 kg, Latent heat of fusion L = 333.7 kJ/kg,

Energy required to melt ice into water at 0°C.

Q₁ = mL

Q₁ = 0.1 x 333.7

Q₁ = 33.37 kJ

Energy required to heat water from  0°C to 100°C is

Q₂ = mCΔT

Q₂ = 0.1 x 4.186 x 100

Q₂ = 41.86 J

Energy required to vaporize at 100°C is

Q₃ = m Lv

Q₃ = 0.1 x 2256

Q₃ = 225.6 kJ

Total heat to vaporize 100 grams of ice at starting at 0°C is

Q = Q₁ +Q₂ +Q₃

Q = 33.37 +41.86 +225.6

Q = 300.83 kJ

Thus, the energy needed to vaporize 100 grams of ice at starting at 0°C is  300.83 kJ

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Iron is a good conductor of electricity because the metallic bonds between its atoms allow electrons to move freely.

These are the features which can be observed when the substance undergoes a chemical reaction.

Good conductor of electricity is a chemical property and is common among metals as a result of the metallic bonds which is why option B was chosen.

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I am sorry I can not tell what the drawing is

Explanation:

The angles in the triangle are 91 degrees, 53 degrees and 36 degrees respectively.

From the cosine rule we know that;

c^2 = a^2 + b^2 - 2abcosC

Since;

a = 0.47 m

b =  0.62 m

c =  0.78 m

Then;

(0.78)^2 = (0.47)^2 + (0.62)^2 - 2(0.47 * 0.62)cosC

0.61 = 0.22 + 0.38 - 0.58 cosC

0.61 - ( 0.22 + 0.38) = - 0.58 cosC

0.01 = - 0.58 cosC

C = cos-1(0.01/-0.58)

C = 91 degrees

Using the sine rule;

b/Sin B = c/Sin C

0.62/sinB = 0.78/sin 91

0.62/Sin B = 0.78

B = sin-1 (0.62//0.78)

B = 53 degrees

Angle A is obtained from the sum of angles in a triangle;

180 - (91 + 53)

A = 36 degrees

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Answer:

Established in 1972 by the McMahon Government, the institute's primary function is research for sustainable use and protection of the marine environment. The Institute investigates topics from broad-scale ecology to microbiology.

The number of  lightbulbs  in a series circuit will not affect the current flowing through them. The independent variable is resistance. The dependent variable is voltage.

The current is the stream of charges which flow inside the conductors when connected across the end of voltage.

For the given set of series bulbs as resistors, the current flowing through all the bulbs will the same. Voltage is divided to each resistor.

From the Ohm's law, V =IR

R = V/I

Here, R is the proportionality constant. So, this is independent value.

The voltage difference across the resistors dependent on the current flowing through that resistance.

Thus, the number of  lightbulbs  in a series circuit will not affect the current flowing through them. The independent variable is resistance. The dependent variable is voltage.

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The pathogen that immunization helps to prevent is virus.

To reduce the risk of atherosclerosis cut down on saturated fatty foods.

Immunization is defined as the prevention of pathogenic viral organisms from harming a living human host through the exposure of the host to an attenuated form of the virus to develop immunity prior to a future exposure.

Atherosclerosis is the deposition of fatty substances on the arterial wall leading to blocking of the blood vessels.

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An argument about the likely kinetic energy of the ball before and after the collision with the can is can remain the same, halved and completely transferred.

In physics, we understand as a collision process the interaction between two or more bodies, initially free (that is, there is no interaction between them). Collision is usually divided into three categories: elastic collision, partially elastic collision and inelastic collision.

Analyzing for each of these cases we have that the kinetic energy before and after the collision will be:

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Answer: 5

Explanation: If you use a real graph it could be easier to check, but here’s it the easy way.

You start at 0, add 3 as you are going right on the right , subtract 4 as you are going left, then again add 6 as you are going right, and you should get 5.

0+3= 3

3-4= -1

-1+6= 5

You will be left with 106 kids

A word problem can be defined as a mathematical problem that is written in word or written in a sentence format.

In a word problem, the student is expected to decode the sentence into a mathematical expression before solving

In conclusion, You will be left with 106 kids

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The number 43,700 cm when written by the use of the scientific notation will be written as 4.37 * 10^4 cm.

The scientific notation involves writing a number in such a way that it does not involve a lot of digits. This methods helps us to save space that would have been used to write long digits.

Hence, the number 43,700 cm when written by the use of the scientific notation will be written as 4.37 * 10^4 cm.

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Answer:

A.

Explanation:

I think it’s a. Because, I normally think about how someone else feels if I want to say something.

Answer:

m/s

km/h

mph

Explanation:

speed is measured with distance which does in velocity too that is why I chose this answer

Answer:

Heat gain = Heat loss

Latent heat of fusion of water = 80 kcal/kg

Specific heat of water = 1 kcal /kg deg C

Heat gain = 1.33 * 80 + (12.4 + 1.33) T = 106 + 13.7 T

Heat Loss = 12.4 * (20 - T) = 248 - 12.4 ΔT

106 + 13.7 T = 248 - 12.4 T

26.1 T = 142

T = 5.4       final temperature

Answer: 10.310406 (works for acellus)

I tried to add an explanation but it wouldn't let me for some reason

Anyways watch the end of the video to see how to get the equation

A marble rolls off a tabletop 1.15 m high and hits the floor at a point 4 m away from the edge of the table in the horizontal direction,

This is further explained below.

Generally, the equation for motion is mathematically given as

S= ut + 0.5at²

Therefore

y = Voy t + 0.5gt^2

1 = 0.5x 98 x 6²

1=4.9t^2

[tex]t=\sqrt{0.2041 }[/tex]

t= 0.45 seconds.

b) Horizontal motions are uniform.

V=Horizontal displacement/time

V=1/0.45

V=2.22m/s

C)

Vx: 2.22 m/s At bottom,

Vy² = Voy² + 2as

Vy² = 2x95x1

Vy² = 19.6

Total velocity

[tex]VT=\sqrt{( 2.22 m/)^2+19.6}[/tex]

VT=4.95 m/s

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The final force on the rock was smaller than the original force from the person and the distance the rock traveled was greater than the original distance the lever moved, so the total work stayed the same.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

The total work done on the process will be conserved.

The lever is a simple machine which makes work easier by reducing the force applied to the load and increasing the distance traveled by the load.

Thus, the final force on the rock was smaller than the original force from the person and the distance the rock traveled was greater than the original distance the lever moved, so the total work stayed the same.

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The potential at a point on the line will be,[tex]\rm E_{net}=\frac{5Kq}{r}[/tex].The net potential is the algebraic sum of the electric potential.

The amount of work performed in an electrical field to move a unit charge from one location to another is defined as the electrical potential difference.

In other terms, the potential difference is the difference in electric potential between two charged substances.

The traditional current flow is from positive to negative terminals, indicating the movement of positive charges in that direction.

[tex]\rm E_1 = \frac{Kq}{r} \\\\ E_2=\frac{K(4q)}{r}[/tex]

The potential at a point on the line is found as;

[tex]\rm E_{net}=E_1+E_2 \\\\\ E_{net}=\frac{Kq}{r} +\frac{K(4q)}{r} \\\\E_{net}=\frac{5Kq}{r}[/tex]

Hence, the potential at a point on the line will be,[tex]\rm E_{net}=\frac{5Kq}{r}[/tex]

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