During a tornado in 2008 the Peachtree Plaza Westin Hotel in downtown Atlanta suffered damage. Suppose a piece of glass dropped near the top of the hotel falling 215 meters . A .Ignoring air resistance, how long would it take the piece of glass to hit the ground? B. Ignoring air resistance, what will the velocity of the piece of glass be when it strikes the ground?

Answer:

convection: heat transfer by movement of currents inside a liquid, currents in the mantle, temp inside the house, red dye rises blue dye sinks,

radiation: heat from a bonfire, transfer of energy through space,

conduction: frying pan to cooking egg, candle heating up foil to chocolate chips

Explanation:

I think its ion magnets correct me if I'm wrong

Answer:

I believe it's A. Sagittarius

Answer:

This is your answer . If I'm right so,

Please mark me as brainliest. thanks!!!

Answer:

According to Newton's third law, the force exerted on each driver during the collision is equal and opposite to the force exerted on their respective vehicles. We can use the principle of conservation of momentum to find the force experienced by each driver.

The initial momentum of the car and driver is the product of their mass and velocity: (800 kg)(6.60 m/s) = 5280 kgm/s. The initial momentum of the truck and driver is (4000 kg)(6.60 m/s) = 26400 kgm/s. After the collision, the final momentum of the combined system (the car, truck, and drivers) is 0, since the collision is perfectly inelastic and the two vehicles stick together. This means that the final momentum of the car and driver is equal and opposite to the final momentum of the truck and driver.

We can set up the following equation to solve for the force experienced by the car driver:

Force (car driver) = (final momentum of car and driver) / (collision time)

= (-final momentum of truck and driver) / (collision time)

= (-26400 kg*m/s) / (0.100 s)

= -26400 N

The negative sign indicates that the force is in the opposite direction of the initial momentum of the car and driver. The force experienced by the truck driver is equal in magnitude to the force experienced by the car driver, so the force experienced by the truck driver is also -26400 N.

Explanation:

A fraction of atmospheric pressure at sea level is 0.047.

Atmospheric pressure, also known as barometric strain, is the stress within the environment of Earth. the same old surroundings is a unit of stress described as one zero one,325 Pa, which is equal to 1013.25 millibars, 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

Atmospheric sea level is known as

P sealevel = P atm = 1.01325*10^5 N/m^2

Now pressure at the bottom of empire state will be

P1 = 1.01325*10^5 N/m^2

Pressure at the top of empire state will be:

P2 = P1 - rho*g*h

rho = density of air = 1.29 kg/m^3

g = 9.81 m/sec^2

h = height of empire state = 380 m

P2 = 1.01325*10^5 - 1.29*9.81*380

P2 = 96516.138 N/m^2

Now

DeltaP = P1 - P2 = 1.01325*10^5 - 96516.138

DeltaP = 4808.862 N/m^2

So fraction will be:

N = DeltaP/Psealevel

N = 4808.862/1.01325*10^5

N = 0.04745 = 4.745*10^-2

In two significant figures

N = 4.7*10^-2 = 0.047

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KE₁ = 1/2mv²

10 J = 1/2mv²

KE₂ = 1/2m(3v)²

KE₂ = 1/2mv².9

KE₂ = 10 . 9 = 90 J

The rock fell as far as 78.4 meters.

Given the following data:

We know that the acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.

To find how far (distance) has the rock fallen, we would use the third equation of motion;

\(V^2 = U^2 + 2aS\)

Where:

Substituting the given parameters into the formula, we have;

\(39.2^2 = 0^2 + 2(9.8)S\\\\1536.64 = 0 + 19.6S\\\\19.6S = 1536.64\\\\S = \frac{1536.64}{19.6}\)

Distance, S = 78.4 meters.

Therefore, the rock fell as far as 78.4 meters.

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Given:

Speed of the toy car max speed = 15 m/s

Time taken before the battery dies = 30 minutes.

Let's find how far the car went.

To find the distance the car travelled, aply the formula:

Where:

Speed = 15 m/s

time = 30 min

Convert the speed to meters per hour

Convert the time to hour.

Where:

1 hour = 60 mins = 3600 seconds

Thus, we have:

• Speed in m/h:

• Time in hour:

To find the distance, we have:

Therefore, the toy car travelled 27000 meters.

ANSWER:

27000 meters.

Answer:

What is the meaning of the kinetic I think the answer is both the ball has both Kinetic and potential energy so I think is the answer is true

Answer: A

Explanation:

Answer:

the correct address is B

In Rutherford's model of the atom, the positive charge is concentrated at the center of the atom.

The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun.

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Answer:

D.) Nuclear fusion begins under high pressure

Explanation:

The velocity-time graph indicates that the car was at rest initially and has a sudden acceleration, thus increased its velocity upto 23 m/s.

A plot between velocity of motion of an object and time is called a velocity-time graph. It demonstrates how an object moves as it moves straight forward.

The instantaneous speed is the same as the magnitude of the velocity at that point. Only 1-Dimensional motion is depicted, and it might have positive or negative values.

The slope is zero when the acceleration is zero, which is represented as a horizontal line. A positive slope (an upward sloping line) indicates that the acceleration is positive.

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The color change of a bicycle as it rusts is a chemical change. Rusting is a chemical process that occurs when iron or steel reacts with oxygen and water in the presence of an electrolyte (such as moisture or salt). The formation of rust involves the oxidation of iron, leading to the creation of iron oxide compounds.

When iron or steel components of a bicycle are exposed to moisture and oxygen over time, they undergo a chemical reaction that results in the formation of iron oxide, commonly known as rust. The rust has a characteristic reddish-brown color, which is different from the original color of the metal.

During this chemical process, the molecular structure of the metal is altered, and new compounds are formed. The color change in the bicycle is a result of these new compounds, specifically the iron oxide, which gives the rusty appearance.

In summary, the color change of a bicycle as it rusts is a chemical change caused by the formation of iron oxide compounds through the oxidation of iron or steel.

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Answer:

1150J

Explanation:

Voltage = energy / charge

energy = Voltage * charge

energy = 230v * 5C = 1150J

Answer:

Yes

Explanation:

they make sound due to the fact that the vibration from the tuning fork itself interacts with the air around it. it's also worth mentioning that anything that vibrates creates sound waves as well.

The mass of her friend is 28.57.

Force is a push or pulls upon an item because of the object's interaction with some other object. pressure is a power that can exchange the motion of an object. A force can reason an object with mass to alternate its speed, i.e., to boost up. pressure also can be described intuitively as a push or a pull. A force has each significance and course, making it a vector amount.

Calculation:-

given;

mass = ?

acceleration = 2.1 m/s

force = 60 N

Force = mass × acceleration

 mass = force/acceleration

           = 60 /2.1

           =  28.57 kg

The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is not something that an object consists of or 'has in it. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.

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The bed slope required to produce the same tractive force on the bed with a discharge of 365 million m³/day can be determined using the given equation for mean velocity variation.

Bed width (B) = 600 m

Initial discharge (Q1) = 120 million m³/day

Initial bed slope (S1) = 7.5 cm/km

The equation for mean velocity (v) = 120 y^(2/3), where y is the water depth.

To find the bed slope (S2) for a new discharge (Q2) of 365 million m³/day, we need to equate the tractive force on the bed for both scenarios.

The tractive force on the bed can be represented as:

Tractive force =\((Rho * g * S * B * v^2) / (R * D50)\)

where:

Rho is the density of water,

g is the acceleration due to gravity,

S is the bed slope,

B is the bed width,

v is the mean velocity, and

R and D50 are constants.

Since we are comparing two scenarios with the same tractive force, the following equation can be formed:

\((Rho * g * S1 * B * v1^2) / (R * D50) = (Rho * g * S2 * B * v2^2) / (R * D50)\)

Simplifying the equation:

\(S1 * v1^2 = S2 * v2^2\)

Substituting the given values:

\(S_1 * (120 y_1^{(2/3))^2 = S_2 * (120 y_2^{(2/3))^2\)

Rearranging the equation:

\(S_2 = S_1 * (120 y_1^{(2/3)})^2 / (120 y_2^{(2/3)})^2\)

We know that Q = B * v * y, where Q is the discharge. Rearranging this equation gives:

\(v = Q / (B * y)\)

Substituting the values for Q1 and Q2, we have:

\(v1 = 120 million / (B * y1)\)

\(v2 = 365 million / (B * y2)\)

Substituting the expressions for v1 and v2 in the equation from step 7:

\(S_2 = S_1 * (120 y_1^{(2/3)})^2 / (120 y_2^{(2/3)})^2\)

\(= S_1 * (120^2 * y_1^{(4/3)}) / (120^2 * y_2^{(4/3)})\)

\(= S_1 * (y_1^{(4/3)} / y2^{(4/3)})\)

Since the bed material just begins to move when Q = 120 million m³/day, the velocity can be expressed as \(v = v_1 = 120 y1^{(2/3)}.\)

Therefore, the equation for S2 becomes:

\(S_2 = S_1 * (y_1^{(4/3)} / y_2^{(4/3)})\)

=\(S_1 * (120^{(4/3)} * y_1^{(4/3) }/ (120 y_2^{(2/3)})^{(4/3))\)

\(= S_1 * (120^{(4/3)} * y1^{(4/3)} / (120^{(4/3)} * y2^{(4/3)}))\)

\(= S_{1 * (y_1^{(4/3)} / y_2^{(4/3)})\)

Finally, substituting the values for y1 and y2:

\(S_2 = S_1 * (y_1^{(4/3) }/ y_2^{(4/3)})\)

= \(S_1 * (y_1^{(4/3)} / (365 / 120)^{(4/3)})\)

Now, you can substitute the values for y1, and S1, and calculate S2 accordingly.

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Answer:

Friction force is the correct answer.

Actually I'm wrong the person who has commented is correct

Answer:

\( = \frac{1}{2} m {v}^{2} \\ = \frac{1}{2} \times m\times {2}^{2} \\ = 2m \: joules\)

Answer:

ΔV = 9

Explanation:

Given your speed data, we can simply think about it graphically and calculate the slope. When your data is layed out on a graph there is a linear relationship, so it has a constant slope. We can calculate slope easily with your data using y2-y1/x2-x1 so 18-9/2-1. This gets us a constant change in velocity (slope) of 9.

The magnitude of the electric force on the charge is 5 N.

The magnitude of force on the charge is calculated as follows;

F = Eq

where;

F = 100 N/C  x 0.05 C

F = 5 N

Thus, the magnitude of the electric force on the charge is 5 N.

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Answer:

5n downward

Explanation:

took the assignment

Infection is one of the factors that can inhibit fracture healing.

Infection is one of the factors that can inhibit fracture healing. Other factors that can interfere with the healing process include poor blood supply to the affected area, inadequate immobilization of the fracture, and underlying medical conditions such as diabetes or osteoporosis.

Option preexisting bone density, is incorrect because individuals with higher bone density are typically better able to heal from fractures. Option overlapping bone ends, may hinder fracture healing if it results in a misalignment of the bone, but it is not a major factor that inhibits healing. Option prepuce retraction, is unrelated to fracture healing and is not a factor that inhibits the process.

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--The question is incomplete, answering to the question below--

"which factor inhibits fracture healing?

a. Prepuce retraction

b. Overlapping bone ends

c. Preexisting bone density

d. Infection"

Answer:

101201.2 Pascal.

Explanation:

Given that the difference h between the two liquid levels is 2.0 cm. The density of the liquid is 800 kg /m3.

Calculate the difference between the pressure of the gas and atmospheric

pressure.

The pressure of the gas can be calculated by using the formula

Pressure = density × acceleration due to gravity × height

Substitute all the parameters into the formula

Pressure = 800 × 2/100 × 9.8

Note that the height is converted to metre.

Pressure = 156.8 Pascal

pressure difference = 101358 - 156.8

Pressure difference = 101201.2 Pascal