janie harvested several flowers from her garden. she wants to make a centerpiece with them for a dinner party in a few days. which of the follow materials should she use in order to extend the shelf life of her flowers until the party?

The additional energy density required to get the water's temperature up to 55 degrees is 4,500 cal.

1 g of water requires 100 calories to heat from its freezing point of 0 C to its boiling temperature of 100 C. However, in order to turn 1 g of water at 100 °C into 1 g of water vapour at 100 °C, 540 calories of energy are needed. The latent heat of vaporisation is what is causing this.

Water has an energy density of 1 calorie/gram/°C. As a result, the amount of energy needed to raise 150 grammes of water's temperature by 30 degrees Celsius (from 25 to 55 degrees Celsius) can be estimated as follows:

Energy = (mass of water) x (change in temperature) x (specific heat capacity of water)

Energy = 150 g x 30°C x 1 cal/g/°C

Energy = 4,500 calories

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Answer:

I belive the awnser to this question is density.

The example provided, where Isaac Newton showed that the same laws govern motion in both realms of Earth and space, best fits the theory of explanation known as Causal Unifications'.

Causal Unifications theory aims to explain phenomena by identifying common causes or underlying principles that apply to seemingly distinct phenomena. In this case, Newton's discovery of the laws of motion demonstrated that the same fundamental principles govern both celestial and earthly motion.

To summarize, the example of Isaac Newton demonstrating that the same laws govern motion on Earth and in space aligns with the Causal Unificationist theory of explanation, which seeks to identify common causes or underlying principles that apply to seemingly distinct phenomena. By discovering the laws of motion, Newton provided a unified explanation for motion in both realms, challenging the previous belief in separate laws for celestial and earthly motion.

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the mix of the answer is tin

Since Alejandro hopes to combine the findings from the collected studies and draw a general conclusion regarding the subject, he is using statistical tool of inference.

There are basically 2 types of statistical tools:

Descriptive tools are used to describe data. They include the use of tables, graphs, measures of dispersion, measures of central tendencies, etc.

Inferential tools are used to deduce conclusions from data. They include measures of significant differences, probability, correlation and regression, etc.

In this case, Alejandro would need to subject the data collected from the 35 studies to inferential statistical analysis tools in order to be able to make relevant conclusions.

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The energy of the photon of blue light is  4.55 × 10^-19 J. Blue light is in the visible spectrum.

Using the formula;

E = hc/λ

E = energy of the photon = ?

h = Plank's constant = 6.6 × 10^-34 Js

c = Speed of light = 3 × 10^8 m/s

λ = wavelength of light = 435nm or 435  × 10^-9 m

Substituting values;

E =  6.6 × 10^-34 Js ×  3 × 10^8 m/s/435  × 10^-9 m

E = 4.55 × 10^-19 J

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The mean free path in the gas is given by the formula: mean free path = (k * T) / (sqrt(2) * pi * d^2 * P), where k is Boltzmann's constant, T is the temperature in Kelvin, d is the diameter of a helium atom.

P is the pressure in atm. The diameter of a helium atom is approximately 2.4 Ångstroms.

The rms speed of the atoms is given by the formula: rms speed = sqrt((3 * k * T) / (m)), where k is Boltzmann's constant, T is the temperature in Kelvin, and m is the mass of a helium atom.

The average energy per atom is given by the formula: average energy per atom = (3/2) * k * T, where k is Boltzmann's constant and T is the temperature in Kelvin.

The mean free path is the average distance an atom travels between collisions. It depends on the temperature, pressure, and size of the atoms.

The rms speed is the square root of the average of the squared speeds of the atoms. It gives an indication of the magnitude of the velocities of the atoms.

The average energy per atom is the average kinetic energy of the atoms in the gas. It depends only on the temperature and is proportional to the absolute temperature.

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Answer:

the death penalty inherently violates the constitutional ban against cruel and unusual punishment and the guarantees of due process of law and of equal protection under the law.

Answer:

When a charged cloud passes over an uncharged cloud during a thunderstorm, the uncharged cloud acquires the opposite charge by induction and the two clouds attract. When they combine, they generate a large amount of heat, light, and sound, also known as lightning.

Explanation:

The area under the process curve on a p-v diagram represents the work done during the process.

On a p-v (pressure-volume) diagram, the process curve represents the path followed by a system as it undergoes a specific process, such as expansion or compression. The area under this curve corresponds to the work done by or on the system during that process.

To understand why the area represents work, we need to consider the definition of work in thermodynamics. In thermodynamics, work is defined as the transfer of energy due to a force acting through a displacement. In the case of a gas undergoing a process, work is done when the volume of the gas changes against an external pressure.

When a gas expands, it does work on its surroundings by pushing against the external pressure. This work is positive because the displacement of the gas is in the same direction as the force exerted by the gas. The area under the expansion curve on a p-v diagram represents this positive work done by the gas.

Conversely, when a gas is compressed, work is done on the gas by the external pressure. This work is negative because the displacement of the gas is opposite to the force exerted by the gas. The area under the compression curve on a p-v diagram represents this negative work done on the gas.

In summary, the area under the process curve on a p-v diagram represents the work done by or on the gas during the process. The magnitude and sign of the work can be determined by calculating the area enclosed by the curve.

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Answer:

The distance traveled!

Explanation:

This is a velocity time graph of an object moving in a straight line due North.

The statement is incorrect. Energy is stored in the circuit in Figure 1 when the switch is closed at t = 0. when the switch in the circuit is closed at t = 0, energy starts to flow and gets stored in various components of the circuit.

The energy storage primarily depends on the presence of capacitors and inductors in the circuit.

In circuits with capacitors, energy is stored in the form of electric fields. When the switch is closed, the capacitor begins to charge, and the voltage across it gradually increases. This charging process requires the transfer of energy from the power source, thereby storing energy in the electric field of the capacitor. As the voltage across the capacitor increases, the energy stored in it also increases.

In circuits with inductors, energy is stored in the form of magnetic fields. When the switch is closed, a current starts to flow through the inductor. This change in current induces a magnetic field around the inductor, and energy is stored in this magnetic field. The energy stored in an inductor is proportional to the square of the current flowing through it, so as the current builds up, so does the energy stored in the inductor.

Therefore, when the switch is closed at t = 0 in the circuit shown in Figure 1, energy starts to flow and gets stored in the capacitors and inductors present in the circuit. The statement that there is no energy stored in the circuit is incorrect.

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The maximum current in the inductor is approximately 1.21 amperes when a 5.05 μF capacitor initially charged to 15.2 V is connected in series with a 3.75 mH inductor.

To determine the maximum current in the inductor when a 5.05 μF capacitor initially charged to a potential of 15.2 V is connected in series with a 3.75 mH inductor, we can use the formula for the resonant frequency of an LC circuit.

The resonant frequency (fr) of an LC circuit is given by:

fr = 1 / (2π√(LC))

Given:

C = 5.05 μF = 5.05 × \(10^{-6}\)F

L = 3.75 mH = 3.75 × \(10^{-3}\) H

Plugging the values into the formula:

fr = 1 / (2π√(5.05 × \(10^{-6}\) × 3.75 × \(10^{-3}\)))

  = 1 / (2π√(1.89125 ×\(10^{-8}\)))

  ≈ 530,012 Hz

The maximum current (Imax) in the inductor can be calculated using the formula:

Imax = V / Xl

Where:

V is the initial potential (voltage) across the capacitor (15.2 V), and

Xl is the inductive reactance.

The inductive reactance (Xl) is given by:

Xl = 2πfL

Plugging the values into the formula:

Xl = 2π(530,012)(3.75 × \(10^{-3}\))

  ≈ 12.556 Ω

Plugging the values into the formula for Imax:

Imax = 15.2 V / 12.556 Ω  ≈ 1.21 A

Therefore, the maximum current in the inductor is approximately 1.21 amperes.

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The initial speed of a 0.5 kg arrow when it is fired from the bow is equal to 20 m/s.

Kinetic energy can be described as the energy carried by a moving body due to its motion. Work should be done on the object in order to bring the change in the kinetic energy of a moving object.

The kinetic energy of an object can be determined from the mathematical formula:

K.E. = ½ mv²    

Where ‘v’ is the object's velocity and ‘m’ is the object's mass.

Given, the mass of the arrow, m = 0.5 Kg

The work done = kinetic energy = 100 J

The kinetic energy = (1/2)× m ×(v)²

100 = (1/2)× 0.5 ×(v)²

v² = 400

v = 20 m/s

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Answer:

she is going to be mad dude

Answer:

Excess currency after a series of deals or fees.

Explanation:

Let's put profit in perspective by using an example. For example, let's say you spend 72 dollars to build a certain product, then you sell that same product to your friend for 116 dollars. It costed 72 dollars to build that product and you sold it for 116, after subtracting the costs for building the product the excess currency is what you would call profit. Profit is your overall goal when running a business, you want to sell a product and make profit from it.

Hope this helps.

profit is your gain on any problem,situation or opportunity given to you

Answer:

The answer should be True, but it's False on Edge 2021

Explanation:

이것이 도움이 되었기를 바랍니다.

(✿◡‿◡)

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-Jiyen~

Answer:

h = 35857 km

Explanation:

A geosynchronous orbit can be defined as circular orbit which lies on the Earth's equatorial plane and follows the direction of the Earth's rotation in a period that's equal to the Earth's rotational period and thereby appearing motionless, at a fixed position in the sky relative to the ground observers.

We are given;

Radius of earth(R) = 6.37 x 10^(6) m

Mass of earth (Me) = 5.97 x 10^(24) kg

Gravitational constant = 6.67 × 10^(-11) m³/kg.s²

The earth has a rotational period of 24 hours per day. This gives in seconds

T = 24 × 60 × 60

T = 86400 s

Let's make the height of the orbit from Earth's surface to be h

Also, let ω be the uniform angular velocity in rad/s with which the satellite rotates in the geosynchronous orbit

Now, equating the centripetal force with the gravitational force gives us;

mω²(R + h) = G•Me•m/(R + h)²

m will cancel out. Also ω can be written as 2π/T

Thus,we now have;

(R + h) = ∛(G•Me•T²/(4π²))

Plugging in the relevant values, we have;

(R + h) = ∛(6.67 × 10^(-11) × 5.97 x 10^(24) × 86400²/(4π²))

(R + h) = 42227 Km

Since R = 6.37 x 10^(6)m = 6370 km

Thus;. h = 42227 - 6370 = 35857 km

The Acceleration of the system is 6.41 m/s².

Given,

α= 15°, m₁ = 7kg

β= 65°, m₂ = 11 kg

Let, a be the acceleration and T is the tensions at the end it's the cord.

Let, the mass m₂ be coming down along the inclined plane along the inclined surface towards downward m₂g sin β and the tension in the upward direction,

Resultant force, m₂a=m₂g sin β -T

11a=((11) ×g sin 65°) -T  ...(i)

Now, considering the motion of m₁ which moves downwards, the forces are m₁g sinα, and T both are acting downwards.

Resultant force m₁a = m₁g sin α+T

7a =7g sin 15°+T  ...(ii)

Solving both the equations by adding them,

18a=11gsin 65°+7g sin 15°-T+T

18a=11gsin 65°+7g sin 15°=115.45

a=115.45/18=6.41 m/s²

Hence, the Acceleration of the system is 6.41 m/s².

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The resistance that must be connected in series to the motor is approximately 9.33 ohms.

To determine the resistance that must be connected in series to the motor, we can use Ohm's Law, which states that resistance (R) is equal to voltage (V) divided by current (I).

In this case, we have the voltage and current for the motor and need to find the resistance for the desired voltage.

Voltage across the motor (V1) = 56 V

Current through the motor (I1) = 6.0 A

Voltage of the outlet (V2) = 120 V

To find the resistance (R), we need to calculate the current (I2) that would flow through the motor when connected to the 120 V outlet.

Using the formula V = I * R, we can rearrange it to solve for the current (I2):

I2 = V2 / R

Now, we can set up a proportion to solve for the resistance (R):

I1 / V1 = I2 / V2

Substituting the given values:

6.0 A / 56 V = I2 / 120 V

Simplifying the equation:

(6.0 A * 120 V) / 56 V = I2

Calculating the current (I2):

I2 ≈ 12.86 A

Now, we can plug the calculated value of I2 into Ohm's Law to find the resistance (R):

R = V2 / I2

R = 120 V / 12.86 A

R ≈ 9.33 Ω

Therefore, a resistance of approximately 9.33 ohms must be connected in series with the motor to operate it on a 120 V outlet.

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Answer:

For temperatures between the freezing and boiling point of water, the heating curve is linear. Thus, we can use:

((200 * 90) + (100* 30))/300

Or: ((200 * 90)(temperature of first sample weighted by mass) + (100 * 30)(temperature of second sample weighted by mass) / (300)(total mass)

to find the final temperature.

100 can be factored out to get (2 * 90) + (1 * 30)) / 3

3 can be factored out every term: (2 * 30) + (1 * 10)

(The factoring out just makes mental math easier; if a calculator is available doing so is unnecessary.)

And then just work through the order of operations.

60 + 10

=70.

So in mathematics, which assumes a perfect world, you get 70.

a) The motion of the motorcyclist is a uniform motion

b) The distance is 600 m

c) The speed is 20 m/s.

We now that motion has to do with the change in the position of an object with time. In this case, we have the graph that described the motion of the motorcyclist . It is clear that the distance is increasing in equal amounts, in equal time intervals thus this is a uniform motion.

Looking at the graph, we can see that the motorcyclist covers 600 meters of distance within 30 seconds.

We can obtain the speed as the ratio of the distance to the time or the slope of the graph. Hence the speed is obtained from;

Speed = distance / time

Using the slope concept;

\(y_{2} - y_{1} /x_{2} - x_{1}\)

= 600 - 0/30 - 0

= 20 m/s

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Here we are required to determine how the Newtons second law of motion can be algebraically rearranged to solve for acceleration (a).

The correct answer is Choice B: a = F/m

Newton's second law of motion states that the force applied is directly proportional to the rate of change in momentum of the body.

i.e

where (v - u)/t = acceleration, (a)

Therefore, F = ma.

By rearranging; i.e solving for acceleration, (a);

we divide both sides by mass, m

we have;

a = F/m

The algebraic rearrangement to solve for acceleration, (a) is therefore;

a = F/m

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The velocity of the rode at the end of the time 4.33 seconds is 42.434 m/s.

Velocity is the rate of change of displacement.

To calculate the velocity of the, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the velocity at the end of the time is 42.434 m/s.

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Answer:

The resulting speed of the ball is;

10 m/s

Explanation:

The given parameters are;

The amount of work done by the lever = 5.0 J

The mass of the ball on which the work is done, m = 0.10 kg

By the principle of conservation of energy, we have;

The work done by the lever = The kinetic energy. K.E., gained by the ball

The kinetic energy, K.E., is given by K.E. = 1/2·m·v²

Where, for the ball, we have;

m = The mass of the ball

v = The resulting speed of the ball

Therefore, by substituting the known values, we have;

The work done by the lever = 5.0 J = The kinetic energy. K.E., gained by the ball =  1/2 × m × v² =  1/2 × 0.10 kg × v²

∴ 5.0 J = 1/2 × 0.10 kg × v²

v² = 5.0 J/(1/2 × 0.10 kg) = 100 m²/s²

v = √(100 m²/s²) = 10 m/s

The resulting speed of the ball, v = 10 m/s.

Answer:water

Explanation:

Water may be a nutrient that makes up 60% of our body weight. it's important in many functions, it's part of every cell in every tissue in the body.

Water carries other nutrients to all or any parts of the body, it carries waste out of the body and it helps to manage body temperature. When you run or play sports your body heats up pretty quickly.

Your body starts to sweat as a way to get rid of the heat. When the sweat evaporates on your skin your body and blood get cool. it's very important to replace the fluid that is lost by sweating so as not to become dehydrated.

If you get dehydrated the body cannot cool itself anymore and your performance will drop. Without enough water, whether you're exercising or sitting all day, you're at risk for dehydration which can be fatal

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Answer:

19.89×10^-26Jm

Explanation:

The Energy of a photon is given as;

E = h×c/λ

Where h is Plank's constant.

c is speed of light

λ is the wavelength.

By multiplying both sides of the equation to λ

E × λ = h×c/λ × λ

E × λ = h×c

= 6.63×10^-34× 3×10^8

= 19.89×10^-26Jm

(a) The height of the cliff will be 8.26 meters.

(b) The time would it take to reach the ground will be 0.717 sec.

The change of displacement with respect to time is defined as the velocity. Velocity is a vector quantity. it is a time-based component.

(a) The height of the cliff will be 8.26 meters.

According to Newton's second equation of motion

\(\rm H =ut-\frac{1}{2} gt^2 \\\\ \rm H =8\times 2.35-\frac{1}{2} 9.81 (2.35)^2\\\\\rm H =8.16 \; m\)

Hence The height of the cliff will be 8.26 meters.

(b)The time would it take to reach the ground will be 0.717 sec.

We must have the final velocity to find the time so;

\(\rm v^2=u^2+2gh\\\\ \rm v^2=8^2+2\times 9.81 \times 8.6 \\\\ \rm v= \sqrt{8^2+2\times 9.81 \times 8.6}\\\\\rm v=15.03 \;m/sec\)

According to Newton's third equation of motion ;

\(\rm v=u-gt \\\\ \rm t=\frac{v-u}{g} \\\\ \rm t=\frac{15.03-8}{9.81} \\\\ \rm t=0.717 sec.\)

Hence the time would it take to reach the ground will be 0.717 sec.

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A free body diagram is a diagram that shows the direction of the forces that are acting on a body.

A free body diagram is a diagram that shows the direction of the forces that are acting on a body. We know that force is a vector quantity. This implies that the magnitude and the direction of a force are equally important when we are dealing with the forces.

Now, in a thug of war, there are two forces that are acting on the rope. The forces acts from the opposite ends in which the rope is being pulled. The rope would move in the direction in which the pulling that is exerted is found to be of greater magnitude.

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