Can somebody help me please be correct I can’t afford to not get it correct please please .

Answer:

52N

Explanation:

v=SQRT(T/μ), μ=pA, A=πr^2

v=SQRT(T/pπr^2)

v^2=T/pπr^2

v^2*pπr^2=T

34^2*2700*π*0.0023^2=T

T=52N

The tension on the aluminum wire at the given density is 52.02 N.

The tension in the wire is calculated using the following formulas;

[tex]v = \sqrt{\frac{T}{\mu} }[/tex]

where;

A = πd²/4

A = π x (4.6 x 10⁻³)²/4

A = 1.66 x 10⁻⁵ m²

μ = ρA

μ = 2700 kg/m³ x 1.66 x 10⁻⁵ m²

μ = 0.045 kg/m

[tex]34 = \sqrt{\frac{T}{0.045} } \\\\34^2 = \frac{T}{0.045}\\\\T = (34^2)(0.045)\\\\T = 52.02 \ N[/tex]

Thus, the tension on the aluminum wire at the given density is 52.02 N.

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Answer:

I think the correct answer is A

Answer:968 m/s

Explanation:

If a race car travels on a straight racetrack with a forward velocity of 44 m/s and slows at a constant rate to a velocity of 22 m/s over 11 s, then the distance traveled by the race car would be 343 m.

There are three equations of motion given by  Newton

The first equation is given as follows

v = u + at

the second equation is given as follows

S = ut + 1/2×a×t²

the third equation is given as follows

v² - u² = 2×a×s

As given in the problem Question a race car travels on a straight racetrack with a forward velocity of 44 m/s and slows at a constant rate to a velocity of 22 m/s over 11 s,

initial velocity = 22 m/s

final velocity =  44 m/s

time = 11 s

By using the first equation of motion,

v = u + at

44 = 22 + 11a

11a = 22

a = 2 m/s²

By using the second equation of motion,

S = ut + 1/2*a*t²

u= 22m/s , a= 2m/s² and t = 11seconds

S = 22*11 + 0.5*2*11²

S = 222+121

S= 343 m

Thus, the distance covered by the race car would be 343 m.

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Answer:

there u go if u feel answer is good plzz mark me brainlest

Explanation:

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Answer:

The factors that affect the force of gravity are :

i) Mass

ii) Acceleration

The reading on the scale when the system is placed on elevator accelerating downward is 7.8m (N).

The given parameter

The reading on the scale is determined by applying Newton's second law of motion;

R = mg - ma

R = m(g - a)

R = m(9.8 - 2)

R = 7.8 m. (N)

where;

Thus, the reading on the scale when the system is placed on elevator accelerating downward is 7.8m (N).

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Answer:Gold is metallic, with a yellow color when in a mass, but when excellently separated it may be black, ruby, or purple. Your density numbers have no units, so they are unusable.

If the numbers you give match to the densities of the given metal in g/ml or kg/L, it should be gold.

Density = mass/volume, so:

96.5g/5ml = 19.3 g/ml. So the answer is 19.3 gold.

Explanation:

Answer:

The kinetic molecular theory of matter states that: Matter is made up of particles that are constantly moving. All particles have energy, but the energy varies depending on the temperature the sample of matter is in. This in turn determines whether the substance exists in the solid, liquid, or gaseous state.

F=ma,a,=v/t ,=65(8/0.75)=693.33

Newton's second law allows finding the result for the type of graph to find the gravity acceleration  is:

                     g = [tex]\frac{slope}{\sqrt{L} }[/tex]

Oscillatory motion is a simple harmonic motion where the restoring force is proportional to the displacement.

Newton's second law gives a relationship between the net force, the mass and the acceleration of a body, in the attached we can see a free body diagram of the system, let's apply Newton's second law.

                 [tex]t_y - W =0 \\T_x = m a[/tex]

Since the movement is circular, the acceleration is centripetal.

                [tex]a = \frac{v^2}{r}[/tex]

Let's substitute.

               [tex]t_x = m \frac{v^2}{r}[/tex]  

Let's use trigonometry to find the radius of the circle and the stress component.

              sin θ = [tex]\frac{r}{L}[/tex]  

              r = L sin  θ

             sin θ =  [tex]\frac{T_x}{T}[/tex]  

             cos θ = [tex]\frac{T_y}{T}[/tex]  

             Tₓ = T sin θ

             [tex]T_y[/tex] = T cos θ

Let's substitute.

            T sin θ = [tex]\frac{m v^2 }{L sin \theta }[/tex]  

            T sin² θ = [tex]\frac{m}{L} \ v^2[/tex]  

From the other equation.

             [tex]T_y= W \\T cos \theta = m g[/tex]  

Let's write our system of equations.

            T sin² θ  = [tex]\frac{m}{L} \ v^2[/tex]  

            T cos θ = m g

We solve the system by squaring the second equation and dividing.

             tan² θ = [tex]\frac{1}{g^2 L } \ v^2[/tex]  

             L g² tan² θ = v²

             v = g [tex]\sqrt{L}[/tex]  tan θ

Consequently, if the student makes a graph of the velocity versus the tangent of the angle, he obtains a straight line and the slope is:

             slope = g [tex]\sqrt{L}[/tex]

From this expression you can calculate the acceleration of gravity.

              [tex]g= \frac{slope}{\sqrt{L} }[/tex]  

In conclusion using Newton's second law we can find the result for the type of graph to find the gravity acceleration  is:

                 [tex]g = \frac{slope}{\sqrt{L} }[/tex]  

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Answer:

It measures only small earthquakes.

It collects data using a seismograph.

Explanation:

hope this helps

Answer: b. It uses data collected by a seismograph.

Explanation:

Answer:

When partners representing multiple jurisdictions or agencies work together to establish the incident objectives, Unified Command is being used.

Explanation:

Explanation:

Blue or violet light has the shortest wavelength. White light is a combination of all colors in the color spectrum.

Answer:

As the atmospheric pressure decreases with increase in altitude, when a sealed bag of chips is taken to higher altitude then the pressure of the gases inside the bag become greater than the outer atmospheric pressure and apply pressure on the side covering of the chips bag due to which the chips bag expand.

Answer:

If there is no cloud (liquid water) in the parcel

Explanation:

Answer:

fjriykckangjcksktkykcjwjtjcsj

Answer:

Xe

Explanation:

At low temperatures or high pressures, real gases deviate significantly from ideal gas behavior. It is also good to know that ideal gas law assumes that the gas molecules have negligible/no size.

Keeping that in mind, Xe is the largest of the bunch, and therefore is expected to have the greatest deviation of the ideal gas when under high pressure or low temperature.

Hope this helped

Answer:

I'm pretty Sure. Yea look.

Explanation:

Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

According to Newton's first law, the steel ball will be reluctant to stop and want to continue in the motion. What will happen is that, the steel ball will either take a parabolic motion forward or move with a great speed to hit the front end of the box

According to Newton's first law, an object which is at rest will continue to remain at rest or in motion in a straight line will continue to move in a straight line except an external force act on it.

That means if a body is at rest, the body will be reluctant to start moving. And when a body is in a motion, it will be reluctant to stop. This is known as inertia

A steel ball that is at one end of a box that is moving forward is already experiencing motion in a straight line. If the box suddenly stops, According to Newton's first law, the steel ball will be reluctant to stop and want to continue in the motion. What will happen is that, the steel ball will either take a parabolic motion forward or move with a great speed to hit the front end of the box just after the box stops.

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Answer: the volume quadruples

Explanation:

Answer:

It represents double composition

Your question says 'in our solar system.' It might or might not be possible. It actually depends on whether the temperature of the planet, the atmosphere, availability of water & food & the things found there suit the needs of the organisms. As of now, no planet in our solar system or in the universe support the inhabitants of earth-like beings. But who knows? It's not entirely impossible either. Scientists say there were remains of water found in Mars which might prove the existence of extraterrestrials. Still, it has not been proved.

_________

RainbowSalt2222 ☔

Answer:

b the balls maximum height

Answer:

maybe the third one....

Answer:

D

Explanation:

A vector quantity is an object with both magnitude and direction, like velocity.

:))

0.00004

Explanation:

velocity of electromagnetic waves = 3.0×10^8.

Wavelength=velocity/frequency

(3.0×10^8) (7.5×10^12)

Answer:

These are all the forces acting on the ball: friction, gravity, and a normal force.

Explanation:

At the middle of the ramp their will be potential energy associated with the ball and the total  mechanical energy  will be equal to its potential energy  . At the bottom of the ramp their will be kinetic energy associated with the ball  and  total  mechanical energy  will be equal to its kinetic energy .

Mechanical energy is the energy that is possessed by an object due to its motion or due to its position.

Total mechanical energy = potential energy + kinetic energy

When ball is positioned in the middle of the ramp , the ball is at rest , which implies that total mechanical energy is equal to   potential energy possessed by the ball and their is no kinetic energy at that instant of time , after that it came under the action of forces due to which it rolls down and its potential energy starts converting into kinetic energy and the total mechanical energy will be the sum of potential as well as kinetic energy  and when it reaches at the bottom of the ramp the total mechanical energy will be kinetic energy of the ball.

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Newton's second law and the definition of Young's modulus allows us to find the change in length in the chord is:

Given parameters

To find

Newton's second law says that the net force on a body is directly proportional to its mass and acceleration.

           ∑ F = m a

where bold letters indicate vectors, F is force, m is mass, and acceleration.

A free-body diagram is a diagram of the forces without the details of the bodies, see attached.

          T-fr = m a

          T = ma + fr

Let's calculate.

          T = 76 0.61 + 140

          T = 186.36 N

Yung's modulus is defined by the relationship between stress and strain.

          [tex]Y = \frac{\frac{F}{A} }{\frac{\Delta L}{L_o} }[/tex]

           [tex]\Delta L = \frac{F}{A} \ \frac{L_o}{Y}[/tex]

Let's calculate.

         ΔL = [tex]\frac{186.36}{1.6 \ 10^{-5}} \ \frac{19}{3.7 \ 10^9}[/tex]  

         ΔL = 5.98 10⁻² m = 5.98 cm

In conclusion using Newton's second law and Young's modulus definition we can find the change in length in the chord is:

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To double the gravitational force between the two blocks, double the mass of the blocks and keep the distance between constant.

The given parameters;

The gravitational force between the two mass is calculated by applying Newton's law of universal gravitation as follows;

[tex]F = \frac{Gm_1 m_2}{r^2}[/tex]

The magnitude of the gravitational force increases with increase in the mass of the blocks and decreases with increase in the distance between the blocks.

To double the gravitational force between the blocks, double the mass of the blocks;

[tex]F = \frac{G(2m_1)(2m_2)}{r^2} \\\\F = 2 \times \frac{Gm_1 m_2}{r^2}[/tex]

Thus, to double the gravitational force between the two blocks, double the mass of the blocks and keep the distance between constant.

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Well that happens to me all the time.

Answer:

80 joule

Explanation:

The formula of kinetic energy is 1/2 mv2.