which type of door that rotates in a circular frame can be dangerous during a fire situation because it may prevent the movement of hose and equipment into the building?

According to the given statement Mrs. Brown's electricity bill for the current month is $5000.00.

To calculate Mrs. Brown's electricity bill for the current month, we need to determine the total number of kilowatt-hours (kWh) she has consumed and apply the corresponding rates.

1. Calculate the electricity usage:

  Current meter reading - Previous meter reading
  20,300 kWh - 17,800 kWh = 2,500 kWh

2. Determine the cost for the first 2000 kWh:

  $1.00/kWh * 2000 kWh = $2000.00

3. Determine the cost for the remaining kWh:

  500 kWh * $3.50/kWh = $1750.00

4. Add the fuel adjustment charge:

  $0.50/kWh * 2500 kWh = $1250.00

5. Calculate the total bill:

  $2000.00 + $1750.00 + $1250.00 = $5000.00


To calculate the electricity bill, we first find the difference between the current and previous meter readings.

In this case, Mrs. Brown used 2,500 kWh.

For the first 2000 kWh, the cost is $1.00 per kWh, resulting in a charge of $2000.00.

For the remaining 500 kWh, the cost is $3.50 per kWh, totaling $1750.00.

Additionally, a fuel adjustment charge of $0.50 per kWh is added to the bill. This amounts to $1250.00.

Finally, we add up all the charges to get the total bill, which is $5000.00.

To know more about electricity visit;

https://brainly.com/question/12791045

#SPJ11

Answer:

i dont understand sorry

Answer:

Natural light (Sun, stars.etc.) and Artificial light (Lamposts, televisions.etc.)

Hope that helps. x

Answer:

Friction. Have a great day! Think positive <3

Answer: Friction

Explanation: It makes sense

Answer: Yes it is true according o newton third law of motion

What is Newton Third Law of motion ?

--According to Newton's third law of motion, every action has an equal and opposite reaction.

--These two forces act on two different bodies.

-- Example,

1-  while swimming, you push the water backward. The water, in turn, pushes you forward.

--Similarly, while walking, you push the ground backward.

-- The ground then exerts a reaction force on you in the forward direction.

What is Newton Second Law of motion ?

--Newton's second law of motion states that “Force is equal to the rate of change of momentum.

--For a constant mass, force equals mass times acceleration.

Learn more about First Law of Motion from https://brainly.in/question/1169541.

#SPJ4

Answer:

D

Explanation:

Answer:

I believe the answer would be kinetic energy to thermal energy.

Explanation:

Thermal energy is the heat of the brakes, and the kinetic energy would be when the car is in motion before stopping.

If the output piston of the hydraulic press has a cross-sectional area of 0.25 then the pressure on the input piston needs to be 4000 N/m² to generate a force of 1000 newtons on the output piston.

To calculate the pressure required on the input piston of the hydraulic press to generate a certain force, we can use the formula:

Pressure = Force / Area

In this case, the output piston has a cross-sectional area of 0.25. Let's say we want to generate a force of 1000 newtons.

So,

Pressure = 1000 N / 0.25 m²
Pressure = 4000 N/m²

You can learn more about the input piston at: brainly.com/question/31324995

#SPJ11

Fiber optic cable uses a mechanism called total internal reflection to transfer information.

Total internal reflection occurs when light hits the boundary between two different materials at an angle greater than the critical angle. The critical angle is the angle at which the light will be completely reflected back into the first material. In fiber optic cables, the core of the cable is made of a material with a higher refractive index than the cladding surrounding it. This means that the critical angle for light hitting the boundary between the core and cladding is very small, and most of the light will be reflected back into the core.

As the light travels through the fiber optic cable, it bounces off the boundary between the core and cladding, staying within the core and traveling in a zigzag pattern. This allows the light to travel long distances without losing much of its intensity. The information being transferred is encoded in the light signal, and can be decoded at the other end of the cable.

In summary, fiber optic cables use total internal reflection to transfer information through the use of light signals bouncing off the boundary between the core and cladding of the cable.

To know more about total internal reflection refer here:

https://brainly.com/question/28231417#

#SPJ11

Answer: 11

Explanation:

Answer:

Tornadoes

A tornado is a violently rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloudExplanation:

If the width of the slit through which light passes is reduced in a single-slit diffraction experiment, the width of the central bright fringe becomes narrower. Correct answer is option d.

The central bright fringe is formed when the waves from all parts of the slit arrive in phase. When the slit is narrowed, the width of the central bright fringe decreases because the light waves passing through the slit interfere with each other more, causing the diffraction pattern to become more spread out.

This leads to the central bright fringe becoming narrower as compared to the original width of the fringe. Therefore, option (d) is the correct answer.

You can learn more about single-slit diffraction at

https://brainly.com/question/29451443

#SPJ11

Answer:

Resistance, R = 2.5 Ohms

Explanation:

Given the following data;

Voltage = 10 V

Current = 4 A

To find the resistance;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

\( V = IR\)

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Making resistance, R the subject of formula, we have;

\( R = \frac {V}{I} \)

Substituting into the equation, we have;

\( R = \frac {10}{4} \)

Resistance, R = 2.5 Ohms

Therefore, the resistance of the resistor in the electrical circuit is 2.5 Ohms.

The maximum velocity of air is approximately 0.767 m/s.

The maximum velocity of air to keep the flow laminar in a pipe can be determined using the Reynolds number (Re). When the Reynolds number is less than 2300, the flow is considered laminar. The Reynolds number is given by:

Re = (ρvd)/μ

where ρ is the density of the fluid, v is the velocity of the fluid, d is the diameter of the pipe, and μ is the viscosity of the fluid.

Substituting the values given in the question, we get:

d = 3 cm = 0.03 m (diameter of the pipe)

ρ = 1.2 kg/m³ (density of air at 1 atmosphere and 20°C)

μ = 1.8 x 10^-5 Pa·s (viscosity of air at 20°C)

Re = 2300 (maximum Reynolds number for laminar flow)

Solving for the maximum velocity (v), we get:

v = Reμ/ρd

Substituting the values, we get:

v = (2300 x 1.8 x 10^-5)/(1.2 x 0.03)

v = 0.767 m/s

Therefore, the maximum velocity of air to keep the flow laminar in a 3 centimeter diameter pipe at 1 atmosphere and 20°C is approximately 0.767 m/s.

To know more about velocity, visit:

https://brainly.com/question/17127206#

#SPJ11

Answer:

Explanation:

A scalar quantity is a physical quantity that has only one characteristic - a numerical value.

The scalar value can be positive or negative.

Examples of scalar quantities: temperature, mass, volume, time, density.

A vector quantity is a physical quantity that has two characteristics:

1) a numerical value that is always positive (vector modulus);

2) direction.

Examples of vector physical quantities: speed, acceleration, force.

(a) The normal force on the sleigh is 596.36 N.

(b) The magnitude and direction of acceleration of the sleigh is 3.2 m/s² upwards.

The given parameters;

The normal force on the sleigh is calculated as follows;

\(F_n = mg \times cos(\theta)\\\\F_n = 63 \times 9.8 \times cos(15)\\\\F_n = 596.36 \ N\)

The magnitude and direction of acceleration of the sleigh is calculated as follows;

\(\Sigma F= ma\\\\F - mgsin(\theta) - F_f = ma\\\\F - mgsin(\theta) - \mu F_n = ma\\\\510\ - \ 63 \times 9.8 \times sin15 \ -\ 0.25\times 596.36 = 63a\\\\201 .11 = 63a\\\\a = \frac{201.11}{63} \\\\a = 3.2 \ m/s^2 \ upwards\)

Learn more here:https://brainly.com/question/19133846

When two air masses of different density approach one another, the denser one goes over the less dense one. This is due to the fact that the denser air has a higher pressure than the less dense air, causing it to sink below the less dense air and form a boundary called a front.

The denser air mass contains more molecules per unit volume than the less dense air mass. The molecules in the denser air mass are therefore closer together and exert a higher pressure than the molecules in the less dense air mass. This causes the denser air mass to sink and slide underneath the less dense air mass, forming a boundary known as a front.

The opposite can occur when a warm air mass meets a cold air mass, as the warm air mass is less dense and rises above the colder, denser air mass.In conclusion, when two air masses of different density approach one another, the denser one goes over the less dense one due to differences in pressure. This can cause a front to form, bringing changes in weather and precipitation.

To know more about molecules visit:

https://brainly.com/question/32298217

#SPJ11

Answer:

it lets out the air inside the balloon and I´m pretty sure it would hit the wall while the air was being let out.

Answer:

29.7 m/s fast, velocity is 29.7 m/s

Explanation:

Applying,

v² = u²+2gs...................... Equation 1

Where v = final velocity, u = initial velocity, g = acceleration due to gravity, s = distance.

Given: u = 0 m/s (dropped from height), s = 45 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

v² = 0²+2×9.8×45

v² = 882

v = √(882)

v = 29.7 m/s.

Hence the stone will be moving 29.7 m/s fast and the velocity is also 29.7 m/s

Answer:

There is no significant energy loss in the total internal reflection and the reflected ray has entire light wave energy so that a brighter image is formed, but some energy in the plane mirror is absorbed inside and thus energy loss.

Explanation:

Advantages

Answer: A skier’s most important piece of equipment is Ski boots.

Explanation: To find the answer, we need to know about the ski boots.

Thus, we can conclude that, a skier's most important equipment is Ski boots.

Learn more about ski boots here:

https://brainly.com/question/28108459

#SPJ4

Ski boots are a skier's most essential piece of gear.

We must understand the ski boots in order to determine the solution.

So, it stands to reason that ski boots are a skier's most essential piece of gear.

Learn more about the ski boots here:

https://brainly.com/question/28108459

#SPJ1

Applying the concept of friction and tension, the smallest force required to start the 38-kg block moving is 102.2 N.

To determine the smallest force p required to start the 38-kg block moving, if the cable ab is attached as shown in the figure, we need to apply the concept of friction and tension. The smallest force required to start the 38-kg block moving can be obtained as follows: Resolving vertically:

Tsin30 = mgTsin30 = 38 * 9.81T = 118.29 N

Resolving Horizontally:

F - Tcos30 - μN = 0F - Tcos30 - μmg = 0F - 118.29cos30 - 0.25 * 38 * 9.81 = 0F - 102.2 = 0F = 102.2 N

Therefore, the smallest force required to start the 38-kg block moving is 102.2 N.

More on force: https://brainly.com/question/30507236

#SPJ11

Ice at 0 degrees celsius is mixed with water at 0 degrees celsius in a perfectly insulated calorimeter.what happens depends on the relative masses of ice and water,some of the ice will melt and the final temperature will be 0 degrees Celsius.So the correct options are 1,2 and 3.

The amount of ice that melts depends on the relative masses of ice and water. If there is more ice than water, then all of the ice will melt. If there is more water than ice, then some of the ice will remain. The final temperature will be 0 degrees Celsius regardless of how much ice melts.

Option 4 is incorrect because the water is already at 0 degrees Celsius, so it cannot freeze. Option 3 is incorrect because heat is not being transferred into or out of the system, so the temperature will not change.Therefore correct option are 1, 2 and 3.

To learn more about calorimeter visit: https://brainly.com/question/2963957

#SPJ11

Answer:

power can be expressed as P=work/change in time,instead of P=change of energy/change in time because the change of energy is basically the work done.

Answer:

P=W/T....is the answer

Kinetic energy (in one dimension): Ĥ = -ħ²/(2m) * ∂²/∂x², Inverse separation (1/x): Ĥ = 1/x, Electric dipole moment (in one dimension): Ĥ = q * x, Mean square deviations: (Δx)² = ⟨x²⟩ - ⟨x⟩², (Δp)² = ⟨p²⟩ - ⟨p⟩²

The operator for the kinetic energy in one dimension is given by:

Ĥ = -ħ²/(2m) * ∂²/∂x²

Where:

Ĥ represents the kinetic energy operator.

ħ is the reduced Planck's constant.

m is the mass of the particle.

∂²/∂x² represents the second derivative with respect to position.

The operator for the inverse separation, 1/x, is given by:

Ĥ = 1/x

The operator for the electric dipole moment in one dimension is given by:

Ĥ = q * x

Where:

Ĥ represents the electric dipole moment operator.

q is the charge of the particle.

x is the position operator.

The mean square deviation of position operator is given by:

(Δx)² = ⟨x²⟩ - ⟨x⟩²

The mean square deviation of momentum operator is given by:

(Δp)² = ⟨p²⟩ - ⟨p⟩²

Where:

Δx represents the uncertainty or deviation in position.

⟨x⟩ represents the mean value of position.

⟨x²⟩ represents the mean value of position squared.

Δp represents the uncertainty or deviation in momentum.

⟨p⟩ represents the mean value of momentum.

⟨p²⟩ represents the mean value of momentum squared.

These operators allow for the calculation of the corresponding observables in quantum mechanics, providing information about the physical quantities being measured or observed.

Learn more about in one dimension

brainly.com/question/30744228

#SPJ11

Unfortunately, the information about trial 3 and the rate of reaction is missing in the given question. Without specific data or context,

The given question asks for the rate of reaction in trial 3 but does not provide the necessary information to calculate it. In order to determine the rate of reaction, specific data such as the change in concentration or the time taken for the reaction needs to be provided. Without this information, it is not possible to accurately determine the rate of reaction. The rate of reaction is a measure of how quickly reactants are converted into products and is influenced by factors such as temperature, concentration, and the presence of catalysts. Therefore, without the relevant data for trial 3, it is not possible to calculate or provide an answer regarding the rate of reaction in that specific trial.

Learn more about specific here;

https://brainly.com/question/5135413

#SPJ11