helpppppppppppppppppppppppppp

Answer:

Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)

The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,

It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement

Answer:

Umm well a person can not hear when a  it snows or maybe like a snow storm

Explanation: snow is so light you dont hear it land but you can see it

Answer: the answer is, A sound wave reaches the ear, and the reflected wave reaches the ear less than 0.1 seconds later

Explanation: PENN

Answer:

a. Frictional force

b. Magnetic force

c. Gravitational force

Answer:

frictional force

magnetic force

gravitational force

hope this helps!

1. Current means flow of electrons and electrons are negative charged and so are attracted to the positive end of the battery and repelled by the negative end.

2. When battery is connected in a circuit that lets the electron flow through it, they flow from negative to positive.

3. When negative terminal of cell is connected to other negative terminal of the cell in a particular circuit then, current will not flow in circuit as electrons cannot flow from negative to negative terminal.

Answer:

Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant

Answer:

27.8m/s

Explanation:

V= d/t

S. I unit of distance (displacement) is m

S. I unit of time is seconds

V= d/t

V = (200 x 1000)m / (2 x 60 x 60)s

V= 27.8 m/s

Answer:

Q = U + pv

Q - U = pv

(Q - U) / v = p

Answer:

B

Explanation:

In this process on merry go round there is not any external torque so angular momentum will be conserve. Mass is always conserved.

Explanation:

A resultant force is the sum of the forces on an object.

Forces are said to be in equilibrium when the resultant force is zero. This means the object will not accelerate.

Answer:

1. Cell

2.Cells

3.Robert Hooke

Answer:

nope! it's actually Jupiter

Explanation:

Jupiter is your answer

Answer:

Tom walked until he was 100 metres from his home. Then, he realised that he had dropped his homework, so he turned around and went 60 metres to pick it up again. He again turned back and started to walk faster to get to the bus stop on time. He got to the bus stop 100 seconds after leaving his home and waited for the bus.

Explanation:

We know

[tex]\boxed{\sf F=G\dfrac{Mm}{r^2}}[/tex]

[tex]\\ \sf\longmapsto G=\dfrac{Fr^2}{Mm}[/tex]

[tex]\\ \sf\longmapsto G=\dfrac{3.82\times 10^{18}(2.5\times 10^7)^2}{(5.98\times 10^{24})^2}[/tex](M=m)

[tex]\\ \sf\longmapsto G=\dfrac{3.82\times 10^{18}(6.25\times 10^{14})}{35.7\times 10^{48}}[/tex]

[tex]\\ \sf\longmapsto G=\dfrac{23.87\times 10^{32}}{35.7\times 10^{48}}[/tex]

[tex]\\ \sf\longmapsto G=0.668\times10^{-16}[/tex]

[tex]\\ \sf\longmapsto G=6.68\times 10^{-15}[/tex]

Answer:

In short, there are four types of natural silk produced around the world: Mulberry silk, Eri silk, Tasar silk and Muga silk. Mulberry silk contributes around as much as 90% of silk production, with the mulberry silkworm generally being regarded as the most important.

Answer:

The direction of defliection of the site to the left I think ..

Conductivity is possible in metals because metallic bonds can shift due to the fact that valence electrons are held loosely and move freely.

WHAT ARE METALLIC BONDS:

Therefore, conductivity is possible in metals because metallic bonds can shift due to the fact that valence electrons are held loosely and move freely.

Learn more: https://brainly.com/question/14442883

valence electrons are held loosely and move freely.

Explanation:

Answer:

please mark me brainliest

Explanation:

Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.

The Four Fundamental Forces of Nature are Gravitational force, Weak Nuclear force, Electromagnetic force and Strong Nuclear force. The weak and strong forces are effective only over a very short range and dominate only at the level of subatomic particles. Gravity and Electromagnetic force have infinite range.

Answer:

melting

Explanation:

that works best

Answer:

The answer is 358.2 g.

When the data of the position and time are available, the velocity which is the ratio of change in position to change in time which is the same as the slope of the graph of the data can be calculated. For the car, we have;

1. The car moves progressively further as the time interval increases

2. The relationship between the position of the car and the time interval is that the car moves approximately 0.02 units of distance for each change in time of 0.05

3. The speed of the car is 0.398

The reason for arriving at the above values are as follows:

1. From the given data, we have that the cart moves progressively further from the start for each time interval increase, such that the cart moves progressively further from the origin in each time interval increases

[tex]\begin{array}{|c|c|} \mathbf{ Time} & \mathbf{ Position}\\2.2&0.8963\\2.25& 0.9164\\2.3 & 0.9375\\2.35 & 0.9581\\2.4 & 0.9759\end{array}\right][/tex]

2. From the given data, we have;

At time t = 2.2, the position = 0.8963

At time t = 2.25, the position = 0.9164

The change in position for a change in time from 2.2 to 2.25 is, Δx = 0.9164 - 0.8963 = 0.0201

Similarly, for the change in time from 2.25 to 2.3, which is a change of 0.05 seconds, we have;

Δx = 0.9375 - 0.9164 = 0.0211

The next interval is 2.3 to 2.35, Δx = 0.9581 - 0.9375 = 0.0206

Therefore, the change in the distance from the origin increases by approximately 0.02 for each increase in tome by Δt = 0.05 seconds

3. The slope equation is presented as follows;

[tex]Slope = \dfrac{y_2 - y_1 }{x_2 - x_1}[/tex]

The speed of the car is given by the slope of the distance time graph, where;

The horizontal variable, x, is the time, t (x = t)

The vertical variable, y, is the position, x (y = x)

Based on the given assignment of the variables to the x, and y, variables, we have;

[tex]Slope = Speed = \dfrac{y_2 - y_1 }{x_2 - x_1} = \dfrac{x_2 -x_1}{t_2 - t_1} = \mathbf{\dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time}}[/tex]

Plugging in the values in the table, we have;

[tex]Speed = \dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time} = \mathbf{\dfrac{0.9759 - 0.8963 }{2.4 - 2.2}} = 0.398[/tex]

The speed of the car = 0.398

Learn more about distance time graph here:

https://brainly.com/question/11755354

https://brainly.com/question/17457755

[tex]\\ \sf\longmapsto Speed=\dfrac{Distance}{Time}[/tex]

[tex]\\ \sf\longmapsto Time=\dfrac{Distance}{Speed}[/tex]

[tex]\\ \sf\longmapsto Time=\dfrac{5000}{5}[/tex]

[tex]\\ \sf\longmapsto Time=1000s[/tex]

The acceleration with which an object falls through a fluid decreases as the speed of the object increases under gravity, to the point where the speed becomes constant, which is known as the terminal speed of the object

The unknown parameters are the mass of the feather, the density of the air, the feather's projected area and the coefficient of drag

The reason the above selected parameters are the correct unknowns is as follows;

The known parameter;

The speed of the feather the student drops off the building's top = 1.5 m/s

The required parameter;

The unknown parameters

Method;

Determine the terminal velocity parameters of the feather

The terminal velocity, [tex]\mathbf{V_t}[/tex], of an item is the maximum steady speed the item reaches as it falls through a fluid. The terminal velocity of the feather is given by the following equation

[tex]Terminal \ velocity, V_t = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}[/tex]

Where;

[tex]\mathbf{V_t}[/tex] = Terminal velocity = The constant speed of the feather

m = Mass of the feather

g = Gravitational acceleration

ρ = Air density

A = The feather's projected area

[tex]C_d[/tex] = Drag coefficient

The average speed of the feather = 1.5 m/s = The feathers typical or most common speed = The terminal velocity of the feather, [tex]\mathbf{V_t}[/tex];

Plugging in [tex]\mathbf{V_t}[/tex] = 1.5 m/s gives;

[tex]V_t = 1.5 \ m/s = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}[/tex]

Therefore, the unknown parameters with regard to the feather falling are the parameters that are to be specified, including;

Learn more about terminal velocity here:

https://brainly.com/question/18763407

Answer:

[tex]\huge\boxed{\sf a = 5 \ ms^{-2}}[/tex]

Explanation:

Given:

Force = f = 60 N

Mass = m = 12 kg

Required:

Acceleration = a = ?

Formula:

F = ma

Solution:

Rearranging formula

a = F / m

a = 60 / 12

a = 5 ms⁻²

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

3) AB and CD

Explanation:

because where velocity is constant acceleration is equal to Zero

Answer:

How many energy levels it has

The period to which an atom belongs can tell how many energy levels it has.

The period table of an element are categorised into horizontal rows (periods) and vertical columns (groups).

Each elements falls under a particular row (i.e period) and column (i.e group).

The group number talks about the number of valence electron(s) in the outermost shell of the atom while the period number talks about the number of energy levels (or number of shells) the atom has.

This is the most reason why elements in the same group have the same number of valence electron(s) while elements in the same period have the same number of energy levels

Learn more:  https://brainly.com/question/13219625

a) An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. This is because a positive and negative electric charge is produced, therefore the balloon sticks to the wall.

b) When an object is thrown up, it comes back to ground because of gravitational attraction force of earth.

c) Mountaineers suffer nose bleeding at higher altitudes because the oxygen level decreases with increase in altitude, which the body cannot adjust.

d) Foundations of high rise buildings are kept wide because more is the area of contact, less is the pressure efforts. So, foundations are wide so as to decrease the possibility of the building from falling down.

e) Deep sea divers or high altitude fliers wear special suits so as prevent their body from being crushed by the water pressure. Since water pressure is maximum at deep seas and oceans, therefore, more is the risk of being injured.

f) Walls of a dam are thickened near the base so that the dam can handle the kinetic energy pressure and prevent itself from breaking down, which if not, can lead to flooding.

HOPE IT HELPS...

Answer:

Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.

Answer:

300

Explanation:

when the baby are born then they would have 300 bones but when they grow they would have 206 cause when they grow that 94 bones would convert into different kind of proton and energy I guess

Answer:

The bonds can shift because valence electrons are held loosely and more freely

Explanation:

Please give brainliest if you can,have a good day<3 :)

Answer:

The bonds can shift because valence electrons are held loosely and move freely.

Explanation: got it right