A framed picture hangs from two cords attached to the ceiling.

A picture of a picture frame hanging by two cables at the center of the frame at the same length and angle from the vertical.

Which shows the correct free body diagram of the hanging picture?

A free body diagram with two force vectors, the first pointing downward labeled F Subscript g Baseline, the second pointing upward labeled F Subscript N Baseline.

A free body diagram with three force vectors, the first pointing south labeled F Subscript p Baseline, the second pointing northeast labeled F Subscript T Baseline, and the third pointing northwest labeled F Subscript N.

A free body diagram with three force vectors, the first pointing south labeled F Subscript g Baseline, the second pointing northeast labeled F Subscript T Baseline and the third pointing northwest labeled F Subscript T.

Answer:the molecules in the football move slower causing them to get closer together and take up less space, which causes the volume to decrease and allows the football to shrink.

Explanation:

The speed of the truck is 20m/s

What is speed?

The speed of an object is described as the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time.

After the collision, the momentum of the car and the truck is given by:

p(total) = m(car) * v(total) + m(truck) * v(total)

where v(total) is the velocity of the two vehicles after the collision.

We can use the angle to find the velocity of the truck.

velocity of truck = velocity total * cos(30)

We then  substitute the given values into the equation and solve for v(truck).

p(car) + p(truck) = p(total)

m(car) * v(car) + m(truck) * v(truck) = (m(car) + m(truck)) * v(total)

400*15 + m(truck) * v(truck) = (400 + 700) * v(total)

Therefore,

v(truck) = (40015 + 400v(total)) / 700

and

v(total) = v(truck) * cos(30)

v(truck) = (6000 + 400* v(truck)*cos(30)) / 700

Solving for v(truck) we get v(truck) = 20 m/s

In conclusion, the truck was traveling at 20 m/s before the collision.

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These relationships are referred to as the equation of motion.

s = ut + ½at². and v = u + at.

length of the Run way = 1350m

Take of speed of the plane is 90 m/s.

The three equations of motion are as follows:

from equation of motion

s = ut + ½at².

here u =0 a =3 m/s^2 t= 30s

put these values on the above equation

s= 1/2x 3x 30x30= 1350 m

length of the Run way = 1350m

from equation of motion ,

v = u + at.

= 0+ 3x 30 = 90m/s.

Take of speed of the plane is 90 m/s.

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Distance = 1350m, speed = 90m/s

Given:

Initially the Aero plane is at rest. Therefore, initial velocity:

u = 0m/s

Acceleration = 3m/\(s^{2}\)

Time taken = 30 seconds

So according to question, we have to find distance & speed

we know that

s = ut + 1/2a\(t^{2}\)

Putting all the values, we get S = 1350 m

Now to find speed, we know,

\(v^{2} = u^{2} + 2aS\)

Putting all the values,

v = \(\sqrt{8100}\)

v = 90m/s

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The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!

What's This Big Bang All About?

In 1927, an astronomer named Georges Lemaître had a big idea. He said that a very long time ago, the universe started as just a single point. He said the universe stretched and expanded to get as big as it is now, and that it could keep on stretching.

What an Idea!

The universe is a very big place, and it’s been around for a very long time. Thinking about how it all started is hard to imagine.

Some More Information

Just two years later, an astronomer named Edwin Hubble noticed that other galaxies were moving away from us. And that’s not all. The farthest galaxies were moving faster than the ones close to us.

This meant that the universe was still expanding, just like Lemaître thought. If things were moving apart, it meant that long ago, everything had been close together.

Everything we can see in our universe today—stars, planets, comets, asteroids—they weren't there at the beginning. Where did they come from?

A Tiny, Hot Beginning

When the universe began, it was just hot, tiny particles mixed with light and energy. It was nothing like what we see now. As everything expanded and took up more space, it cooled down.

The tiny particles grouped together. They formed atoms. Then those atoms grouped together. Over lots of time, atoms came together to form stars and galaxies.

The first stars created bigger atoms and groups of atoms. That led to more stars being born. At the same time, galaxies were crashing and grouping together. As new stars were being born and dying, then things like asteroids, comets, planets, and black holes formed!

Answer:

PE = 137.2931 J

Explanation:

PE = 137.2931 J

Answer:

Polarization.

Reason being that phenomena verifies the transverse nature of light

In your business plan, the target market section should clearly identify both your primary and secondary market(s). The market analysis is basically the target market section of your business plan. It is a thorough examination of the ideal people to whom you intend to sell your products or services.

Answer:

920000

Explanation:

Each kg contains 1,000 grams

UwUz i dun mind dat im havin' hard time on mah test ༼ つ ◕_◕ ༽つ

Answer:   Relative Atomic Mass

Explanation:   The closer the element is to the bottom-right corner, the higher the relative atomic mass. Hydrogen has the lowest relative atomic number at 1, whereas Lawrencium has the highest relative atomic mass at 262.

Answer:

deformation : elastic deformation is reversed when the force is removed. inelastic deformation is not fully reversed when the force is removed – there is a permanent change in shape.

Explanation:

tysm

Answer:

B. -20 m/s

Explanation:

Given the following data:

Initial velocity = 30 m/s

Acceleration = 5 m/s²

Deceleration = -5 m/s² (deceleration is the negative of acceleration)

Time = 10 seconds

To find the final velocity, we would use the first equation of motion;

\( V = U + at\)

Where;

V is the final velocity.

U is the initial velocity.

a is the acceleration.

t is the time measured in seconds.

Substituting into the formula, we have;

\( V = 30 + (-5)*10\)

\( V = 30 - 50\)

Final velocity, V = -20 m/s

Supersonic flights are moving with speed greater than that of sound. This speed through air will combine the pressure waves and creates shock waves. Continuation of shock waves leads to sonic boom in air.

Sonic booms are sound created on the ground by overpressure in the air generated by fastly moving objects. Similar to someone dumping goods from a moving car, an aircraft travelling at supersonic speeds continuously produces shock waves that cause sonic booms to travel throughout its flight path.

The boom seems to be swept rearward as it moves away from the aeroplane from its point of view. The boom will strike the ground in front of the aircraft if the aircraft makes a rapid turn or pulls up.

The abrupt start and release of pressure following the building by the shock wave or "peak overpressure" is what is heard as a "sonic boom" on the ground. Only a few pounds per square foot change in pressure results from a sonic boom, which is about equivalent to the pressure shift we experience in an elevator.

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The density of water is approximately 1 g/cm^3. Therefore, the volume of 2800 g of water would be 2800 cm^3 because density is mass/volume, and so volume is mass/density.

Since this volume is inside a cubic box, the length of each side of the cube (a, for instance) could be found by taking the cubic root of the volume. This is because the volume of a cube is calculated by a^3 (length of one side cubed). Hence, a = cube root of 2800 cm^3 ≈ 14.1 cm.

Converting centimeters to meters (as 1 meter is equal to 100 centimeters), we get approximately 0.141 meters.

So the filled cubic box has a side length of approximately 0.141 m.

Across

2. opaque

4. hard

5. metal(s)

6. translucent

8. luster

Down

1. wood

3. transparent

7. soluble?

Happy to help, have a great day! :)

Answer:

so how much heat is there at 0 C? That's zero. But for every degree above that you have 4.184 J. You take it from there. Remember q = mc*delta T.

Answer:

When an object is thrown, the thrower pushes the object. This causes the object to move in a  

Explanation:

Answer:

This can help you! Pictures tell more than 100s of word.

Explanation:

Answer:

The answer is given in the picture.

Hope it helps...

Explanation:

Given:

Diameter = 200 m

Radius, r = 200/2 = 100 m

Time taken, t = 30 seconds

Formula to be used:

Distance traveled, = circumference of circle = 2πr

Answer:

Putting all the values, we get

Distance traveled = 2πr

So, the distance traveled by Raju is 628.57 m.

Now, magnitude of the displacement,

At the end of 30 seconds, Raju will come to starting position or initial position, so displacement is zero.

The light will take 2.2 μs  in travelling a distance of 500 m in water refractive index of water is 1.33 and velocity of light in vacuum is 3 × 10⁸ m/s.

When a light is going from medium 1 to medium 2. The refractive index is defined as a ratio of velocity of light in medium 1 to velocity of light in medium 2. Refractive index is the factor which deals with the amount of bending of light. More refractive index means more it will bend in the medium 2. When it is 1 we can say that light has not been bent.

refractive idex of the medium is given by,

μ = velocity of light in vacuum/ velocity of light in medium

velocity of light in water = velocity of light in vacuum/ μ

velocity of light in water = 3 × 10⁸ m/s. / 1.33

velocity of light in water = 2.25 × 10⁸ m/s

Time = distance/velocity

Time = 500 m / 2.25 × 10⁸ m/s

time = 222 × 10⁸ s

time = 2.2 μs

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Answer: I like your profile picture

Explanation:

Answer:

The average deceleration of the car can be calculated using the formula for deceleration, which is given by the change in velocity divided by the time over which the change occurs. In this case, the initial velocity of the car is 200 m/s, the final velocity is 0 m/s, and the time over which the change occurs is 2 seconds. Therefore, the average deceleration can be calculated as follows:

Deceleration = (0 m/s - 200 m/s) / 2 s = -100 m/s^2

The negative sign indicates that the deceleration is in the opposite direction to the initial velocity of the car, which is what we would expect in this case, since the car is slowing down. Therefore, the average deceleration of the car is -100 m/s^2.

The magnitude of the force in each case is;

a) 28 N

b) 14 N

c) -14 N

In physics, we know that force is a vector quantity. The force is a push or a pull and it must have direction thus we would see that the magnitude of the force would tend to differ in any direction that we would have to consider in the problem above. Hence, we shall now try to see the work that is done in each of the cases that involves the box as have been shown in the question that we can see above.

a) If the force have been applied horizontally, then the work that is done is the product of the mass,  the acceleration of the body

F = ma = 20 Kg * 1.4m/s^2 = 28 N

b) If the force is 30° above the horizontal then it has a vertical direction we have;

F = ma sin 30°

F = 20 Kg *   1.4m/s^2  * sin  30°  = 14 N

C) Now we have the negative vertical direction thus;

F = 20 Kg *   1.4m/s^2  * (-sin  30° ) = -14 N

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Answer:

Its C

Explanation:

My teacher did it for me and it was right.

A cell of inter resistance of 0.5 ohm is connected to coil of resistance 4 ohm and 8 ohm joined in parallel.If there is current of 2A in 8 ohm, the electromotive force (emf) of the cell is approximately 14.5 volts.

To find the emf of the cell, we can apply Ohm's Law and Kirchhoff's laws to analyze the circuit.

Given:

Resistance of the coil, R1 = 4 ohm

Resistance of the other resistor, R2 = 8 ohm

Current passing through the 8-ohm resistor, I = 2A

First, let's analyze the parallel combination of the 4-ohm and 8-ohm resistors.

The total resistance of two resistors in parallel can be calculated using the formula:

1/Rp = 1/R1 + 1/R2

Substituting the given values, we have:

1/Rp = 1/4 + 1/8

1/Rp = 2/8 + 1/8

1/Rp = 3/8

Rp = 8/3 ohm

Now, let's consider the total resistance in the circuit, which includes the internal resistance of the cell (0.5 ohm) and the parallel combination of the resistors (8/3 ohm).

R_total = R_internal + Rp

R_total = 0.5 + 8/3

R_total = 1.833 ohm

Now, we can find the emf of the cell using Ohm's Law:

emf = I * R_total

emf = 2 * 1.833

emf ≈ 3.667 volts

Therefore, the emf of the cell is approximately 3.667 volts.

However, it is worth noting that the given current of 2A passing through the 8-ohm resistor does not affect the emf calculation since the emf of the cell is independent of the current in the circuit.

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Answer:

Earth have a liquid water supply and Mars does not because of the difference in their magnetic fields. Therefore the option B is correct.

Explanation:

The atmosphere of Earth is shielded from solar winds and radiation by a potent magnetic field, which keeps the atmosphere from being torn away. This enables water to remain liquid on the surface of the planet.

Mars, in contrast, has a weaker magnetic field, which results in a thinner atmosphere that is unable to support liquid water. Mars is hence more colder and drier than Earth.

One of the main reasons that Mars has no life as we know it is because it lacks a magnetic field, whereas the magnetic field of Earth is crucial in fostering the conditions necessary for life to flourish.

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The arrow that represents the change of state of the substance is gaseous to liquid (O).

A change of state occurs when a matter gains or losses energy.

A liquid can change into solid or gas. A gas change into liquid or solid, depending on the average change in temperature.

The initial state of the substance is gas, because the atoms of the substance are far apart.

When the atoms are close together but are able to slide past one another, the state is liquid.

Note: atoms of solid substance are fixed.

Thus, the arrow that represents the change of state of the substance is gaseous to liquid (O).

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Considering the investigation and the observation made we can say the arrow that represents the change of state is: O

A change of state is the process by which a matter changes from one physical form to another.

in change of state we have mainly three states: Liquid, Gas and Solid.

Changing from gas to liquid is called condensation, because the atoms of gases move freely and faster. but once the speed reduces and their movement becomes restricted, then we say a condensation has occurred.

In conclusion, from the observation made, we can say the arrow that represents the change is Arrow O. which is from gas to liquid.

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