How do you find the speed of a hraph

Answer:

The options that increase greenhouse gases are:

Coal burning power plant

Exhaust from a car

Wind power and solar power do not increase greenhouse gases, as they are considered renewable energy sources that do not produce direct emissions of greenhouse gases during their operation.

Explanation:

Answer:

Explanation:

Coal burning power plants and exhaust from a car increase greenhouse gases

Wind power and solar power do not produce greenhouse gases

I hope this helps!

Answer:

Increase the amplitude

Explanation:

The energy conveyed by a wave is directly proportional to the square of its amplitude. Thus; E ∝ A²

This means that increasing the amplitude will lead to an increase in the energy.

Now, the amplitude of a wave is the height of a wave from it's highest point known as the peak, to the lowest point on the wave known as the trough whereas wavelength refers to the length of a wave from one peak to the next.

This means that increasing the amplitude has no effect on the wavelength.

Answer:

Option A (69.56 newtons) is the appropriate solution.

Explanation:

According to the question,

On the X-axis,

⇒ \(T_1Cos30^{\circ}-T_2Cos60^{\circ}=0\)

or,

    \(T_1Cos 30^{\circ}=T_2Cos60^{\circ}\)

On substituting the values, we get

      \(T_1\times \frac{\sqrt{3} }{2}=T_2\times \frac{1}{2}\)

      \(T_1\times \sqrt{3} =T_2\)....(equation 1)

On the Y-axis,

⇒ \(T_1Sin30^{\circ}+T_2Sin60^{\circ}=139.3 \ N\)

                        \(\frac{T_1}{2} +\frac{\sqrt{3} }{2} =139.2 \ N\)

                    \(T_1+\sqrt{3}T_2=139.2\times 2\)

From equation 1, we get

           \(T_1+\sqrt{3}\times \sqrt{3}T_1 =278.4 \ N\)

                        \(T_1+3T_1=278.4 \ N\)

                                \(4T_1=278.4 \ N\)

                                  \(T_1=\frac{278.4}{4}\)

                                       \(=69.6 \ N\)  

Answer:

69.58

Explanation:

Answer:

(a) Frictional Force = 16 N

(b) Frictional Force = 10.5 N

Explanation:

(a) FOR TENSION OF 16 N:

First we find the static friction force (Fst):

Fst = (μs)(W)

Fst = (0.6)(35 N)

Fst = 21 N

Since, Tension < Fst

Frictional Force = Tension

Frictional Force = 16 N

(b) FOR TENSION OF 38 N:

Since, Tension > Fst

Frictional Force = Kinetic Friction = (μk)(W) = (0.3)(35 N) =  

Frictional Force = 10.5 N

Answer:

Explanation:

(m1 + m2)*V1 = m2*V2 + m1*Vx

Vx = ((m1 + m2)*V1 -  m2*V2) / m1

Vx = ((82 + 48)*7.4 - 48*8.6) /82 = 6.7 m/s

momentum(p) = mass(m) x velocity(v)

KE = kinetic energy = 1/2 mv²

a.

the ratio of the momentum of the SUV to that of the car

\(\tt \dfrac{mv}{1.5m\dfrac{2}{3}v }=1:1\)

b.  the ratio of the KE of the SUV to that of the car

\(\tt \dfrac{1/2\times mv^2}{1/2\times 1.5m\times (\dfrac{2}{3}v )^2}=\dfrac{mv^2}{1.5m\dfrac{4}{6}v^2 }=1:1\)

Answer:

composition :))

Explanation:

Answer:

Both C and D are true, but it mainly depends on answer C, the composition of the star.

Explanation:

Hope This Helps!

At 30°C, the rms speed of a sample of oxygen with a molar mass of 16 g/mol is approximately 482.34 m/s.

The root mean square (rms) speed of a gas molecule is a measure of the average speed of the gas particles in a sample. It can be calculated using the formula:

vrms = √(3kT/m)

Where:

vrms is the rms speed

k is the Boltzmann constant (1.38 x 10^-23 J/K)

T is the temperature in Kelvin

m is the molar mass of the gas in kilograms

To calculate the rms speed of oxygen at 30°C (303 Kelvin) with a molar mass of 16 g/mol, we need to convert the molar mass to kilograms by dividing it by 1000:

m = 16 g/mol = 0.016 kg/mol

Substituting the values into the formula, we have:

vrms = √((3 * 1.38 x 10^-23 J/K * 303 K) / (0.016 kg/mol))

Calculating this expression yields the rms speed of the oxygen sample:

vrms ≈ 482.34 m/s

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Answer:

OMG IM ON THE SAME QUESTION

Explanation:

When filled with extra air its mass increased to 0.428kg also the top of polythene container mass connected to the perplex box of volume 1000cm³ and the number of times of air inside was 7.2 times. The density of the air filled in the polythene container is approximately 1.25 kg/m³.

The density of air filled in the polythene container can be determined by considering the change in mass and volume of the container before and after filling it with air. Given that the mass of the empty container is 0.419 kg and the mass of the container when filled with extra air is 0.428 kg, and the volume of the perplex box is 1000 cm³.

Calculate the mass of the air inside the container by subtracting the mass of the empty container from the mass of the container when filled with air:

Mass of air = Mass of filled container - Mass of empty container

= 0.428 kg - 0.419 kg

= 0.009 kg

Calculate the volume of the air inside the container using the given number of times the air inside is 7.2:

Volume of air = Volume of perplex box * Number of times air inside

= 1000 cm³ * 7.2

= 7200 cm³

Convert the volume of air to cubic meters (m³) by dividing by 1000000:

Volume of air = 7200 cm³ / 1000000

= 0.0072 m³

Calculate the density of air using the formula:

Density = Mass / Volume

Density = 0.009 kg / 0.0072 m³

≈ 1.25 kg/m³

Therefore, the density of the air filled in the polythene container is approximately 1.25 kg/m³.

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Answer:

Theres no given?

Explanation:

Well, whatever.

I observed the shift of their sunset time.

Examples like:

January to June = their sunset time increased while

July to December = their sunset time decreased

Answer:

Measure change in temperature after long call

Explanation:

Answer:

5.3 m

Explanation:

Your friend is 1800 mm tall, and you want them to fill half the frame (79 mm / 2 = 39.5 mm).

The film is 116 mm behind the lens.  Using similar triangles:

x / 1800 = 116 / 39.5

x = 5286

Rounded to two significant figures, your friend should stand 5.3 meters away.

The difference between the manufacturer's claims and your findings is, the manufacturer is concerned about amount of fat in the meat while you are concerned about calories.

Your findings concluded that only fat can provide calories needed in the body, perhaps other classes of food or nutrients in the meat can provide calories as well.

In the manufacturer's claim there are about 3% fat in the lunch meat and doesn't necessary mean that all the calories needed is the 3% fat.

Thus, there are lots of difference between your findings and the manufacturer's claim. The manufacturer is concerned about amount of fat in the lunch meat while you are concerned about calories in the meat.

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These two statements are true: the wood's momentum is lower than the bullet's starting momentum, and the total energy is lower than the bullet's original kinetic energy.

Pi = Pf, Pbi+Pwi = Pbf+Pwf, MbVbi+MwVwi = Mb Vbf + Mw Vwf, MbVbi + Mw (0) = (Mb + Mw)Vf, and MbVbi = (Mb + Mw)Vf according to the rule of conservation of linear momentum.

As a result, the bullet's initial momentum is smaller than that of the wood.

Consequently, the appropriate choice is (c).

(2) The formula for kinetic energy is Ki = Pi2/2Mb Kf = Pf2 / 2(Mb + Mw).

By dividing the two energies by their ratio, Kf = (Mb / Mb + Mw)Ki and Kf = Pf2 / 2(Mb + Mw) / Pi2/2Mb.

as a result, the appropriate choice is (a).

According to the rule of conservation of momentum, if two objects collide, the force obtained by one object equals the force lost by one.

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Answer: 0.4 V

Explanation:

Given

The area of the loop is \(A=0.8\ m^2\)

The magnetic field is changing at the rate of \(\dot{B}=-0.5\ T/s\)

Induced EMF is given by

\(E=-\dfrac{d\phi }{dt}\\\\E=-\dfrac{d(B\cdot A)}{dt}\\\\E=-A\dfrac{dB}{dt}\\E=-0.8\times (-0.5)\\E=0.4\ V\)

The magnitude of induced emf is 0.4 V

Answer:

c

Explanation:

amembers of the group protocista

Answer:

the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. ... This means rocks, topsoil, trees, buildings, your pet dog, and so on, would be swept away into the atmosphere.

Explanation:

to me, this means we would proabaly be sucked into outer space and could die if no astronaut gear is on

Answer:

p.e=0.078kg×1/2×5.36m

p.e=0.913j

Answer:

j

Explanation:

Answer:

b. the cylinder

Explanation:

From the information given:

We understood that the mass of the sphere, cylinder, and rod length is the same with the same angular speed.

Taking their moments:

For the solid sphere; \(\text{The moment of inertia :}\) \(I_s\) = \(\dfrac{2}{5} \times m \times r^2\)

The moment of inertia of the cylinder, \(I_c = 0.5\times m \times r^2\)

The moment of inertia of rod, \(I_r =\dfrac{ m * r^2 }{12}\)

The rotational kinetic energy is directly corresponding to the moment of inertia.

Thus, the cylinder has the greatest rotational kinetic energy.

The number of distinct ways of placing four indistinguishable balls into five distinguishable boxes is 20.

To solve this problem, we can use the stars and bars method, which is a combinatorial technique used to count the number of ways to distribute indistinguishable objects into distinguishable containers. In this case, we have four indistinguishable balls and five distinguishable boxes.

The stars and bars method works by representing each ball as a star and using bars to separate the balls into different boxes. For example, if we wanted to distribute two balls into three boxes, we could use the following diagram:

* | * * | *

In this diagram, the first and last bars represent the boundaries of the containers, while the stars represent the balls.

The second bar separates the first two balls from the last ball, indicating that the first two balls are in the first container and the last ball is in the third container.

To distribute four balls into five boxes, we need to use three bars to separate the balls into four groups. We have a total of six spaces to place the bars (including the boundaries), and we need to choose three of them to place the bars.

Therefore, the number of distinct ways to place four indistinguishable balls into five distinguishable boxes is the same as the number of ways to choose three spaces out of six, which is:

6 choose 3 = (6!)/(3!3!) = 20

Therefore, there are 20 distinct ways to place four indistinguishable balls into five distinguishable boxes using the stars and bars method.

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According to Coulomb's law, the force between the given charges is 0.225N which is explained below.

Force on two identical charges q separate by a distance of r is given by:

F = kq²/r²

where k is Coulomb's constant

q is the charge

r is the separation between the charges

Given that q = 1×10⁻⁵C,

and r = 2m

So, the force between the given charges will be:

F = (9×10⁹)(1×10⁻⁵)²/2²

F = 0.225N is the required force.

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Answer:

C. The molecules will move more slowly

Explanation:

As the temperature in the system decreases, the random motion of the molecules decreases and as a result the molecules will move more slowly. So, option C is correct.

Intermolecular force is defined as the force of attraction or repulsion that mediates between the neighboring molecules in a system.

Here,

The water molecules in the system have more intermolecular distance between them and thus they are in random motion and are colliding among each other. These water molecules have lesser intermolecular force of attraction when compared to solids and higher than that of gas molecules.

When the temperature of the system decreases, the kinetic energy of the water molecules decreases which results in the reduced speed of the molecules. The intermolecular force of attraction between the molecules increases. As a result, the intermolecular distance between the molecules is decreased, thus the molecules comes more closer to each other. Due to this, the random motion of the water molecules in the system gets decreased which in turn causes the collision between the molecules become much lesser.

Hence,

As the temperature in the system decreases, the random motion of the molecules decreases and as a result the molecules will move more slowly.

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Attaching the image here.

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

where

m is the mass

f is the force

We have

\(a = \frac{275}{18} \\ = 15.277777...\)

We have the final answer as

Hope this helps you

The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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1) The similarity is that in both the cases the light is deviated from its original path i.e. their angles change (even for a short while in a refraction) and the difference is in reflection the angle of incidence is equal to the angle of reflection whereas in refraction the angle of incidence is not equal to the angle of reflection.

2) A white t-shirt would feel cooler on a sunny day.

A black surface attracts heat and wearing a black t-shirt would attract the heat from the sun making us feel hotter.

3) There are three measurable properties

of wave motion: amplitude, wavelength,

and frequency. A definitive experiment was

Young's double slit experiment, which

demonstrated that light shined at two slits

in a screen show an interference pattern

characteristic of waves of light, rather than

particles.

Answer: first and third.

Explanation:

An equation is dimensionally correct if the units are the same in both sides of the equation.

first, let's define the units used:

{m} = kg

{v} = m/s

{F} = kg*m/s^2

{x} = m

{t} = s

{a} = m/s^2

Now, let's analyze each option:

1) m*v/t = F

in the left side the units are:

{m}*{v}/{t} =  kg*(m/s)*(1/s) = kg*m/s^2

And as is written above, these are the units of F, so this is correct.

2) x*v^2 = F*(x^3/x^2)

This is more trivial, in the right side we can see an F, that has mass units (kg)  and in the left side we have x and v, and we know that none of these have mass units, so this expression is not correct.

3) xt= vt^2+at^3

the units in the right side are:

{x}*{t] = m*s

in the right side are:

{v}*{t}^2 + {a}*{t}^2 = (m/s)*s^2 + (m/s^2)*s^3 = m*s + m*s

So in both sides of the equation we have the same units, then this equation is dimensionally correct.

The material that quickly gets magnetized when applied to the magnetic field is called soft ferromagnetic material.

Soft ferromagnet, these materials are characterized by high magnetic permeability, low coercive force, easy magnetization/demagnetization, and small hysteresis. Some examples are iron, nickel, aluminum, tungsten, and cobalt. Soft ferromagnet. High relative permeability, low coercive force, easy magnetization/demagnetization, and extremely small hysteresis. Soft ferromagnetic materials are iron and various alloys including materials such as nickel, cobalt, tungsten, and aluminum. Ferromagnetism is a rare property found only in a very small number of materials. The most common are the transition metals iron, nickel, and cobalt, and their alloys, as well as alloys of rare earth metals. 

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