Silvia is at a football game. Although not everyone is sitting together, she is quickly able to figure out who wants the home team to win based on how they are dressed. Silvia is using

The correct answer is option 3 i.e., 5.50 Kg and 120 N had lowest acceleration among all options given.

What connection exists between force and mass of acceleration?

Mass times acceleration, or F=m x a, equals force. This means that in order to move an object at the same speed as an object with smaller mass, a stronger force is required. Newton's Second Law of Motion is this.

Acceleration = Force / Mass

Given, as per question in all the 4 options Force = 120 N same for all

So as per formula if we assume Force is constant

Then, if mass is increased then acceleration will be lowest as both are inversely proportional.

1. Acceleration= 120 / 4.25 = 28.23 m/s²

2. Acceleration= 120 / 3.25 = 34.28 m/s²

3. Acceleration= 120 / 5.50 = 21.81 m/s²

4. Acceleration= 120 / 4.50 = 26.66 m/s²

Hence answer is option number 3.

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Hello..!

We first apply the data to the problem.

Data:

Now, we convert the "km/h" to "m/s".

Conversion:

Then, we apply the formula that is.

Formula:

Finally we develop the problem.

Developing:

The distance covered is 1222 meters.

Answer:

Formula:

Hope this helped

The time will be the same for both horizontal and vertical component. The initial speed is 10.7 m/s

Speed is a distance travel per time taken. It is a scalar quantity and it is measured in m/s

Given that a person standing at the edge of a seaside cliff kicks a rock horizontally of the cliff from a height of 52 m and it lands a distance of 35 m from the base of the cliff.

The rock will move vertically downward with initial velocity = 0. The time taken will be constant. That is, same horizontally.

Let us first calculate the time by using the formula

h = ut + 1/2gt²

Where

Substitute all the necessary parameters into the formula

52 = 0 + 1/2 × 9.8 × t²

52 = 4.9t²

t² = 52/4.9

t² = 10.6

t = √10.6

t = 3.26 s

The speed at which the rock was initially kicked can be found by

R = Ut

35 = U × 3.26

U = 35/3.26

U = 10.7 m/s

Therefore, rock was initially kicked at a speed of 10.7 m/s

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Answer:

here, if you have an iron which has 28 protons and 26 electrons, and we have to find the charge on the iron, the element and the symbol of the iron. So For 28 protons charge is 28 e. And for 26 electrons, charge will be -26 E. So total charges 28 E minus 26 E. Equal to two E. On I N S, plus two. No, we have to find the element. So atomic number is equal to Number of protons, which is 28, and this is atomic number four nickels. So the element is nickel and we have to find the symbol of iron. So the iron has to positive child. So the symbol will be and I took place So this completes the solution. Thank you.

Explanation:

Answer:

W = F • ∆x

so for work to be done, a force and displacement has to be in the same direction. (Ex: a box is being pushed forward and it's also moving forward.)

Option C. The heat absorbed or lost by a substance while it's changing state  correctly describes latent heat

Latent heat is the heat absorbed or lost by a substance while it is changing state.

The latent heat is a type of heat that is transferred during phase change, i.e., while a substance undergoes a change of state.

For example, when ice melts into liquid water, or when liquid water evaporates into water vapor, heat is absorbed from the surroundings.

Latent heat is not associated with a temperature change; rather, it's associated with a change of state.

For instance, the temperature of water remains at 100°C while boiling.

When water is boiling, the latent heat of vaporization is absorbed and utilized to break the hydrogen bonds holding water molecules together to change water from the liquid phase to the gaseous phase.

When the water is boiling, adding more heat won't increase the water's temperature, instead, the extra heat will be absorbed to change the phase of water molecules.

Therefore, the correct answer to the given question is option C: The heat absorbed or lost by a substance while it is changing state.

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Answer:

A metal cube has a surface area of

64x10^-4 m2. Calculate the quantity of

heat flow through the cube in 600s

with -1x10^-3K m' temperature

gradient.

Answer:

c

Explanation: because i took it and got it correct

To calculate the electric force between two charges, we can use Coulomb's law:

F = k * |q1 * q2| / r^2

where F is the electric force, k is the electrostatic constant (k ≈ 8.99 × 10^9 N m^2/C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between the charges.

In this case, q1 = 0.0042 C, q2 = -0.0050 C, and r = 0.0030 m.

Substituting these values into the equation:

F = (8.99 × 10^9 N m^2/C^2) * |0.0042 C * (-0.0050 C)| / (0.0030 m)^2

F = (8.99 × 10^9 N m^2/C^2) * 0.000021 C^2 / 0.000009 m^2

F ≈ 1977.78 N

Therefore, the electric force between the two charges is approximately 1977.78 Newtons.

Answer:

the tension in the part of the cord attached to the textbook is 7.4989 N

Explanation:

Given the data in the question;

As illustrated in the image below;

first we determine the value of the acceleration,

along vertical direction; we use the second equation of motion;

y = ut + \(\frac{1}{2}\)a\(_y\)t²

we substitute;

0 m/s for u, 1.29 m for y, 0.850 s for t,

1.29 = 0×0.850  + \(\frac{1}{2}\)×a\(_y\)×(0.850)²

1.29 = 0.36125a\(_y\)

a\(_y\) = 1.29 / 0.36125

a\(_y\) = 3.5709 m/s²

Now when the text book is moving with acceleration , the dynamic equation will be;

T₁ = m₁a\(_y\)

where m₁ is the mass of the text book ( 2.10 kg )

a\(_y\) is the vertical acceleration ( 3.5709 m/s² )

so we substitute

T₁ = 2.10 × 3.5709

T₁ = 7.4989 N

Therefore, the tension in the part of the cord attached to the textbook is 7.4989 N

\(\displaystyle v = 5.7735 \ m/s\)

Math

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Physics

SI Units

Energy

Kinetic Energy Formula: \(\displaystyle KE = \frac{1}{2} mv^2\)

Step 1: Define

Mass m = 30 kg

Kinetic Energy KE = 500 J

Step 2: Solve for v

Answer:

Similar to a lock and key, the biomedical model seeks to find a solution that fits the respective problem. Biopsychosocial. The biopsychosocial model is aptly named because of its three essential components: biological, psychological and social ideologies. As a result, the concept of health is viewed as a balance between these three sectors.

Explanation:

hope it helps

have a great day

:)

Im pretty sure its A cuz is closer to the earth.

Explanation:

Add all of the velocities together....then the rock will be moving in the OPPOSITE direction according to conservation of momentum

(15 + -12 + 1.2) m/s i = -1.8 m/s i

(5 + 8 + -18 ) m/s j = -5 m/s j      These are the resultant force components  on 210 kg of deer meat

-1.8  (210) i   -  5 (210) j    = 200  x  i    +   200 y j  m/s

results in  rock velocities:     1.89 i  m/s      + 5.25  j m/s  

Please tell me if this is incorrect and I will re-evaluate ......

For a single slit illuminated with a 500 nm light gives a diffraction pattern on a far screen,the angle  is mathematically given as

theta=25.3

Option A is correct

Generally, the equation for the the angle   is mathematically given as

\(\theta=n(\lambda/d)\)

Therefore

\(\theta 1/ \theta 2=n1(\lambda/d)/ n2(\lambda/d)\)

In conclusion

theta/7=16/5

theta=10*7/5

theta=25.3

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Answer:

1-As winds rise up the windward side of a mountain range, the air cools and precipitation falls.

2-Mountains and mountain ranges can cast a rain shadow. As winds rise up the windward side of a mountain range, the air cools and precipitation falls.

3-Mountains and mountain ranges can cast a rain shadow. As winds rise up the windward side of a mountain range, the air cools and precipitation falls. On the other side of the range, the leeward side, the air is dry, and it sinks.

4-Rain shadow deserts are formed because tall mountain ranges prevent moisture-rich clouds from reaching areas on the lee, or protected side, of the range.

5-Mountains and mountain ranges can cast a rain shadow. As winds rise up the windward side of a mountain range, the air cools and precipitation falls. On the other side of the range, the leeward side, the air is dry, and it sinks. So there is very little precipitation on the leeward side of a mountain range.

6-Mountains and mountain ranges can cast a rain shadow. As winds rise up the windward side of a mountain range, the air cools and precipitation falls. On the other side of the range, the leeward side, the air is dry, and it sinks. So there is very little precipitation on the leeward side of a mountain range.

Explanation:

#6 and 5 are the same

Answer: 1. 0.25 m/s squared

2. A = 0.4 m/s^2

3.=20kg. I did this before.

Explanation:

Answer:

Answer: 1. 0.25 m/s squared

2. A = 0.4 m/s^2

3.=20kg.

Explanation:

brainliest? ill answer more of your recent questions!!

The angle (θcornea)  when light passes from air to cornea is 16.86°

It states that the ratio of sine of angle of incidence and angle of refraction is equal to the refractive index of second medium to the  first medium.

sini/sinr =n₂ / n₁

Most of the bending of light in the eye is done at the air-cornea interface. The beam of light deviated as it passes from air to the cornea if the incident angle is θi = 23.6°.

Given the angle of incidence i = 23.6°, refractive index of air n₁ =1, refractive index of cornea n₂ = 1.38, then the angle of refraction at cornea is

sinr = sini x (n₁/n₂)

Plug the values, we get

sinr = sin23.6 x (1/1.38)

sinr = 16.86°

The angle of refraction is less than angle of incidence due to refraction.

Thus, the angle (θcornea)  when light passes from air to cornea is 16.86°

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Answer:

If two bumper cars collide with a certain force, then they will move away from each other in opposite directions with the same force. This demonstrates Newton's third law, which states that for every action, there is an equal and opposite reaction.

Explanation:

Based on Newton's first  and second law of motion most people would find it less painful to catch a flying baseball than a bowling ball flying at the same speed as the baseball because the mass of the baseball is smaller and will require smaller force to be stopped.

Newton's first law of motion first law of motion states that a body at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.

Newton's first law of motion is also called law of inertia because it depends on mass of the object.

An object with a greater mass will require greater force to be stopped or get moving.

Based on Newton's first law of motion most people would find it less painful to catch a flying baseball than a bowling ball flying at the same speed as the baseball because the mass of the baseball is smaller and will require smaller force to be stopped.

Also according to Newton's second law of motion, the force applied to an object is proportional to the product of mass and acceleration of the object. Thus, a baseball with smaller mass will require smaller force to be stopped.

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Explanation:

As per Rayleigh criterion, the angular resolution is given as follows:

\(\theta=\frac{1.22 \lambda}{D}\)

From this expression larger the size of aperture, smaller will be the value of angular resolution and hence, better will be the device i.e. precision for distinguishing two points at very high angular difference is higher.

A rope pulls a Tesla out of mud. The guy pulls a force F⊥ of 300N, and theta = 4.2°. The tension force T is 298.44__ Newton.

The problem describes a Tesla that is stuck in the mud and needs to be pulled out using a rope. the guy pulls a force F⊥ of 300N and that the angle between the rope and the horizontal plane is θ = 4.2°. The goal is to find the tension force T exerted by the rope.To solve for T, we'll need to use trigonometry. We can break the force vector into its horizontal and vertical components as follows:

Fx = F⊥ cosθ and Fy = F⊥ sinθ.

Since the rope is pulling the Tesla horizontally, the horizontal component of the force will be the tension force T. So we have:

T = Fx = F⊥ cosθ = (300 N) cos(4.2°) ≈ 298.44 N

Taking the cosine of the angle is necessary since it's the adjacent side that we're interested in, which is the horizontal component of the force. Therefore, the tension force exerted by the rope is approximately 298.44 N.

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The initial velocity of a car that accelerates to a speed of 55 m/s within the span of 8 seconds is 23m/s.

The initial velocity of a moving body can be calculated using the following formula:

a = v - u/t

Where;

According to this question, a car accelerates to a speed of 55 m/s within the span of 8 seconds. If its acceleration was 4 m/s², the initial velocity is calculated as follows:

4 = 55 - u/8

32 = 55 - u

u = 55 - 32

u = 23m/s

Therefore, the initial velocity of a car that accelerates to a speed of 55 m/s within the span of 8 seconds is 23m/s.

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Answer:

a. If the frequency of light is increased above the threshold frequency, the energy of the electrons emitted will increase.

b. If the frequency of light is decreased to below the threshold frequency, the rate at which electrons are emitted will decrease.

c. If the intensity of light is decreased, the energy of the electrons emitted will remain the same, but fewer electrons will be emitted.

d. If the intensity of light is decreased, the rate at which electrons are emitted will decrease.

Answer:

The answer is "between 20 s and 30 s".

Explanation:

Calculating the value of positive displacement:

\(\ (x_{+ve}) = \frac{1}{2} \times 15 \times 20 \\\\\)

          \(= \frac{1}{2} \times 300 \\\\= 150 \\\\\)

Calculating the value of negative displacement upon the time t:

\((x_{-ve}) = \frac{1}{2} \times 5 \times 20- 20(t-20) \\\\\)

          \(= \frac{1}{2} \times 100- 20t+ 400 \\\\= 50- 20t+ 400 \\\\\)

\(\to X= X_{+ve} + X_{-ve} \\\\\)

\(\to 150 - 50 -20t+400 =0\\\\\to 100 -20t+400 =0 \\\\\to 500 -20t =0\\\\\to 20t =500 \\\\\to t=\frac{500}{20}\\\\\to t=\frac{50}{2}\\\\\to t= 25\)

That's why its value lie in "between 20 s and 30 s".

The ice cube will lose thermal energy to the surroundings. The given statement is true of a piece of ice at 0°C that is put into a freezer at -18°C. Thus, the correct option is C.

The term thermal energy is used loosely in various different contexts in physics and engineering mainly. Thermal energy can refer to several different well-defined physical concepts. These concepts include the internal energy or the enthalpy of a body of matter and the radiation energy, the heat energy, which is defined as a type of energy transfer and it is the characteristic energy of a degree of freedom.

If a piece of ice at 0°C that is put into a freezer at -18°C then it can be said that the ice cube will lose thermal energy to the surroundings.

Therefore, the correct option is C.

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The work done is equal to the force applied parallel to the floor multiplied by the distance moves. Hence, option B is correct.

When a wooden crate is pushed across a floor, the work done on it is given by the product of the force applied parallel to the floor and the distance moved by the crate.

This is because work is defined as the product of force and displacement in the direction of the force, which in this case is the distance moved by the crate. The force of friction and the mass of the crate are not relevant to the calculation of work done in this scenario

It is important to understand the concept of work and the factors that influence it, as it is a fundamental concept in physics and is used in many real-world applications.

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Answer: 10 J

Explanation:

Trust ;)

Answer:

43200 J

Explanation:

(1/2(mass)) (speed)^2