i will give u brainliest!

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 36 g

volume = 15 cm³

We have

[tex]density = \frac{36}{15} = \frac{12}{5} \\ [/tex]

We have the final answer as

Hope this helps you

Formation of bubbles when baking soda and vinegar are mixed is an example showing a chemical reaction has occurred as these two substances on mixing form sodium acetate.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and reactions are accompanied by an energy change as new substances are formed.

Learn more about chemical reactions,here:

https://brainly.com/question/14929452

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Answer: D just took the test

Explanation:

Answer:

D

Explanation:

Answer: B (on the rough side)

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Air will become turbulent around a thrown ball on the rough side of the ball because it will cause the air waves to be irregular. Option B is the right answer.

When an object is moving in air, it moves smoothly if the shape is streamlined and the body of the object is smooth.

An object will experience turbulence when the air waves are violent and are irregular.

Therefore, air will become turbulent around a thrown ball on the rough side of the ball because it will cause the air waves to be irregular.

The correct answer is option B.

Learn more about turbulence here: https://brainly.com/question/4853035

Answer:

The new volume of the [tex] NH_{3}[/tex] sample is 3.27mL.

Explanation:

Given the following data;

Original Volume, V1 = 2.50-mL

Original Temperature, T1 = 325K

New Temperature, T2 = 425K

To find new volume V2, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

[tex] VT = K[/tex]

[tex] \frac{V1}{T1} = \frac{V2}{T2}[/tex]

Making V2 as the subject formula, we have;

[tex] V_{2}= \frac{V1}{T1} * T_{2}[/tex]

[tex] V_{2}= \frac{2.50}{325} * 425[/tex]

[tex] V_{2}= 0.0077 * 425[/tex]

V2 = 3.27mL

Therefore, new volume of the [tex] NH_{3}[/tex] sample is 3.27mL.

Answer:

t=5s

Explanation:

t=2 + t= 3s = t= 5s

Answer:

The distance ran by the runner in the 2 seconds is 2·A

The speed of the runner at the end of the 2 seconds is 2·A

Explanation:

The given information are;

The distance the sprinter is running = 100 m

The initial constant acceleration of the sprinter, a = A

The duration of the initial acceleration, t = 2 s

The initial speed of the printer, u = 0 (The sprinter starts from rest)

The rate with which the sprinter then runs with to the end = Constant speed

Therefor, we have, from the equation of motion;

s = u × t + 1/2 × a × t²

Where;

s = The distance ran by the sprinter

∴ at t = 2 seconds, we have;

s = 0 × 2 + 1/2 × A × 2² = 1/2 × A × 4 = 2·A

The distance ran by the runner in the 2 seconds = 2·A

The speed, v, of the runner at the end of the 2 seconds is given as follows;

v = u + a × t

When t = 2 seconds, we have;

v = 0 + A × 2 = 2·A

The speed of the runner at the end of the 2 seconds = 2·A.

Answer:

x = 400 [m]

Explanation:

To solve this problem we must use the following kinematics equations, first, we find the final speed, and then we proceed to find the distance traveled.

[tex]v_{f}=v_{i} +(a*t)\\[/tex]

where:

Vf = final velocity [m/s]

Vi = initial velocity = 15 [m/s]

a = acceleration = 5 [m/s^2]

t = time = 10 [s]

Note: the positive sign in the Equation indicates that the car is accelerating, i.e. its speed is increasing.

Now replacing

Vf = 15 + (5*10)

Vf = 65 [m/s]

Now using the second equation:

[tex]v_{f} ^{2}= v_{i} ^{2}+(2*a*x)[/tex]

where:

x = distance traveled [m]

x = (65^2 - 15^2)/ (2*5)

x = 400 [m]

hmmmmmmmmmmmmmmmmmmmmm

Answer:

Moon Phase

Explanation:

Answer:

a)  a = 0 m / s²

, b)  a = 0 ==> F = 0

, c)   a = - 2 m / s²

,d) v = 4 m/s

Explanation:

a) It is asked to find the acceleration in the interval from 0 to 2s, from the graph we see that in this interval the velocity is constant with a value of 4 me / s, therefore the average eceleration is

         a = (V₂ - V₁) / t

         a = (4 -4) / 2

         a = 0 m / s²

b) Newton's second law establishes a relationship between force and acceleration

        F = m a

  as acceleration is zero

        a = 0 ==> F = 0

c) the acceleration in interval 2 a4 S

          a = (0 - 4) / (4-2) = -4 / 2

          a = - 2 m / s²

The negative sign iniquity the acceleration is slowing the movement

d) the force is

        F = m a

        F = 2 m

e) from the graph we can read the speed of the vehicle for time

        v = 4 m / s

Answer:

The hammer.

Explanation:

The most practiced throw in Ultimate. A hammer is an overhead throw held with the forehand grip

Answer:

HAMMER.

Explanation:

Ah, the hammer. The most practiced throw in Ultimate. A hammer is an overhead throw held with the forehand grip

R = resistivity × (l/A), A = πr^2= πd^2/4

2 =( 4.9 × 10^ -4) * (l/π0.7^2/4)

make l the subject and calculate.

i assumed we are looking for the length if the wire.

Answer:

See the explanation below

Explanation:

Density is defined as the relationship between mass and volume, i.e. the following equation can be used:

density = m/v

where:

density [kg/m^3]

m = mass [kg]

v = volume [m^3]

If we change the volume of a body by reducing its size, its mass will also decrease proportionally with a density as seen in the equation.

m = density*v

To understand this concept more clearly, let's use the following example:

We know that the density of water is equal to 1000 [kg/m^3], that is, 1 cubic meter of water contains 1000 kilograms of water, using the equation.

1000 = m /1

m = 1000*1 = 1000 [kg]

Now if we have 500 kilograms of water, that would pass with the volume so that the density remains constant.

1000 = 500/v

v = 500/1000

v = 0.5 [m^3]

We can see that the volume of water has halved. Since the mass of water was reduced by half. That is, the relationship between mass and volume is proportional to the density of the material or substance.

Answer:

B mass and velocity......................

Answer:

the pull or push which changes or tends to change the position of an object from rest to motion or motion to rest is called force.

Changes of force that can be produced:

Answer:

Explanation:

Answer: 0.0004

Explanation: hope this helpsss ^-^

Answer:

43 m\s in the 10 seconds?

Explanation:

Answer:  6 and 0.75

Explanation:

because you look how far up it goes and just use the graph

Answer:

It is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.

Answer:

there are three type of notion

Answer: Zero.

Explanation:

By the first Newton's law, we know that:

every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Now, we know that the car is moving with constant speed, then there is no net force acting on the car, which means that the car is already in equilibrium.

Then if we add one force to the situation, the car will not be anymore in equilibrium.

The correct option is zero.

Answer:

3333.33 m/s²

Explanation:

From the question given above, the following data were obtained:

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

Average acceleration can be defined as follow:

Average acceleration (a) = Total velocity (v) / total time (t)

a = v / t

With the above formula, we can obtain the average acceleration of the ball as shown below:

Total Velocity (v) = 40 m/s

Total Time (t) = 0.012 s.

Average acceleration (a) =..?

a = v / t

a = 40 / 0.012

a = 3333.33 m/s²

Therefore, the average acceleration of the ball is 3333.33 m/s².

Answer:

His average speed is

[tex] \frac{64km}{4h} = {16kmh}^{ - 1} [/tex]

Answer:

[tex]P=7,840\ Pa[/tex]

Explanation:

Pressure Exerted by a Column of Liquid

The pressure P exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation:

P = ρgh

Where ρ is the density of the liquid, g is the acceleration of gravity g=9.8m/s^2, and h is the height of the column of liquid.

The data provided is as follows:

[tex]\rho=1000\ Kg/m^3[/tex]

[tex]g=9.8m/s^2[/tex]

[tex]h=80\ cm = 0.8\ m[/tex]

The pressure is:

[tex]P = 1000\ Kg/m^3\cdot 9.8\ m/s^2 \cdot 0.8\ m[/tex]

[tex]\boxed{P=7,840\ Pa}[/tex]