There is one foot in 12 inches.
How many feet are in 18.6 inches?
Round your answer to the nearest 10th's place.

PLS I REALLY NEED HELP WITH THIS QUESTION

The heat that is required to freeze the water is 1250 kJ. Option B

The freezing point of water is the temperature at which liquid water turns to solid. We know that heat is withdrawn from water when it is frozen. This heat is added when the water melts.

The latent heat of fusion = mL

m =  3.75 kg

L = 333kJ/Kg

Hence;

H =  3.75 kg * 333kJ/Kg

H = 1250 kJ

Learn more about heat of fusion:https://brainly.com/question/14053504

#SPJ1

The separation between the plates of the vacuum capacitor is approximately 0.001474 meters or 1.474 millimeters.

To find the separation between the plates of a vacuum capacitor, we can use the formula for capacitance:

C = ε₀ * A / d

where C is the capacitance (60.0 pF, or 60.0 × 10⁻¹² F), ε₀ is the vacuum permittivity (8.854 × 10⁻¹² F/m), A is the plate area (0.010 m²), and d is the separation between the plates.

We need to solve for d:

d = ε₀ * A / C

First, let's plug in the values:

d = (8.854 × 10⁻¹² F/m) * (0.010 m²) / (60.0 × 10⁻¹² F)

Now, we can perform the calculation:

d = (8.854 * 0.010) / 60.0
d ≈ 0.001474 m

Learn more about capacitors here:-

https://brainly.com/question/17176550

#SPJ11

The electric field must be pointing upwards.

When an electron beam enters a region with both electric and magnetic fields, it experiences both a force due to the electric field and a force due to the magnetic field. The direction of the force due to the electric field is given by the direction of the electric field itself, while the direction of the force due to the magnetic field is given by the right-hand rule. In this case, since the electrons are moving to the right and the magnetic field points into the page, the force due to the magnetic field will be directed downwards, according to the right-hand rule.

Therefore, in order for the net force on the electrons to be directed upwards, the electric field must also be directed upwards. This is because the direction of the electric field determines the direction of the force due to the electric field, and in this case the force due to the electric field must be directed upwards to counteract the force due to the magnetic field and maintain the net upward force on the electrons.

To learn more about electric field : brainly.com/question/11482745

#SPJ11

Answer:

I think it is television and radio wave

Since the mass is not present, the tension in the rope T = 0 N.

Tension, in physics, is be defined to be the pulling force transmitted axially by the means of a string, a rope, chain, or similar object. The opposite of tension could be compression.

At the atomic level, when atoms/molecules are pulled apart from each other and gain potential energy with a restoring force still existing, the restoring force might create tension.

Tension is a pulling force since it is exerted when a mass being pulled by a rope or a similar object. If the mass is not present, then there is no tension (pulling force) exerted by the rope, hence T = 0 N.

Learn more about tension here: https://brainly.com/question/2008782

#SPJ4

The two faces of the block to which the potential difference should be applied to give the maximum current density are those parallel to the applied electric field.

Current density is the current per unit area of a surface, expressed in amperes per square meter (A/m²). It is represented by the symbol J. When a current flows through a conductor or a wire, it is normally distributed across the cross-sectional area of the wire, and current density describes this distribution.Potential difference:Potential difference is the difference in electric potential energy between two points in an electrical circuit, which is usually represented by the symbol V.

It can be defined as the difference in electric potential energy per unit of charge between two points. The difference between two points is the amount of work that must be done to move a unit charge from one point to the other.The formula for the electric potential difference is:

V = IR

Where, V is the potential difference, I is the current, R is the resistance. To obtain the maximum current density, potential difference should be applied to the two faces of the block parallel to the applied electric field.

Learn more about current density and potential difference at: https://brainly.com/question/17113622

#SPJ11

Answer:

12.8 metres

Explanation:

distance = speed x time

distance = 4 x 3.2

distance = 12.8

They have a limited supply in nature, therefore if they are used excessively, they will become exhausted.

Today, we recognise that using fossil fuels has a negative impact on the environment. Fossil fuels produce and utilise local pollutants, and their continued use permanently alters the temperature of our entire world.

Wastes from combustion sources are those that result from carbon pollution (i.e., coal, oil, natural gas). Included in this are all ash and particles taken out of the flue gas.

The fossile fuel is limited in nature. So, it should not waste energy from fossil fuels.

More about the fossile fuel link is given below.

https://brainly.com/question/3371055

#SPJ1

Answer:

Its inductance L = 166 mH

Explanation:

Since a current, I = 0.698 A is obtained when a voltage , V = 5.62 V is applied, the resistance of the coil is gotten from V = IR

R = V/I = 5.62/0.698 = 8.052 Ω

Since we have a current of I' = 0.36 A (rms) when a voltage of V' = 35.1 V (rms) is applied, the impedance Z of the coil is gotten from

V₀' = I₀'Z where V₀ = maximum voltage = √2V' and I₀ = maximum current = √2I'

Z = V'/I' = √2 × 35.1 V/√2 × 0.36 V = 97.5 Ω

WE now find the reactance X of the coil from

Z² = X² + R²

X = √(Z² - R²)

= √(97.5² - 8.05²)

= √(9506.25 - 64.8025)

= √9441.4475

= 97.17 Ω

Now, the reactance X = 2πfL where f = frequency of generator = 93.1 Hz and L = inductance of coil.

L = X/2πf

= 97.17/2π(93.1 Hz)

= 97.17 Ω/584.965 rad/s

= 0.166 H

= 166 mH

Its inductance L = 166 mH

Answer: I think its C

Explanation:

Answer:

a rolling bowling ball

Explanation:

a rock at the edge of a cliff, an archer’s bow that is drawn back, a rolling bowling ball, a car waiting at a red light

moving is kinetic energy a rolling bowling ball is the only one with movement

Answer:

Life means to exist' in general

Answer:

1 - b

2 - e

3 - d

4 - a

5 - c

The velocity with which the electrons drift in the silver wire is approximately 1.58 x 10^-4 m/s.

To find the velocity with which electrons drift in a silver wire, we can use the formula:

I = nAvq

where:

I is the current (in amperes),

n is the number of free electrons per unit volume (in m^3),

A is the cross-sectional area of the wire (in m^2),

v is the drift velocity of electrons (in m/s), and

q is the charge of an electron (approximately 1.6 x 10^-19 C).

Given:

I = 5.0 A (current)

n = 5.8 x 10^28 m^-3 (number of free electrons per m^3)

A = πr^2 = π(0.002 m)^2 (cross-sectional area)

q = 1.6 x 10^-19 C (charge of an electron)

First, we calculate the cross-sectional area of the wire:

A = π(0.002 m)^2 = 1.2566 x 10^-5 m^2

Next, we rearrange the formula and solve for v:

v = I / (nAq)

v = 5.0 A / (5.8 x 10^28 m^-3 * 1.2566 x 10^-5 m^2 * 1.6 x 10^-19 C)

v ≈ 1.58 x 10^-4 m/s

Therefore, the velocity with which the electrons drift in the silver wire is approximately 1.58 x 10^-4 m/s.

The drift velocity represents the average velocity at which the electrons move in the wire under the influence of an electric field. It is relatively small due to frequent collisions with lattice ions and other electrons within the wire.

For more such questions on electrons drift visit;

https://brainly.com/question/25700682

#SPJ8

The new speed of the electron is half the initial speed.

The de Broglie wavelength of an electron is given by λ = h/p, where λ is the wavelength, h is Planck's constant, and p is the momentum of the electron. Since momentum is given by p = mv, where m is the mass of the electron and v is its speed, if λ is doubled, then p must be halved. Since the mass of the electron is constant, this means that the velocity of the electron must also be halved to maintain the same momentum. Therefore, the new speed of the electron is half the initial speed.

Learn more about Velocity here

brainly.com/question/24259848

#SPJ11

(a) The given situation involves a basketball player attempting a free throw. A diagram can be drawn to illustrate the scenario, with the hoop located 4.2 m horizontally from the free throw line.

The hoop is positioned 3 m above the ground, and the player releases the ball from a height of 2 m. The initial launch speed of the ball is 7.6 m/s. All measurements should be labeled clearly on the diagram. (b) Using the zero-drag projectile solution, the range can be expressed as a function of the launch angle. By solving for the launch angle in the equation, we find two possible angles that allow the ball to pass through the center of the hoop: θ ≈ 40.5° and θ ≈ 62.9°. Plotting the corresponding trajectories for these angles will provide a visualization of the paths the ball would take. (c) To determine if the smaller launch angle (θ ≈ 40.5°) is too shallow, we consider the diameters of the ball (24 cm) and the hoop (46 cm). Analyzing the trajectory will reveal if the basketball approaches the hoop at an angle that is too steep or shallow for it to pass through successfully.

Learn more about diameters here:

https://brainly.com/question/32968193

#SPJ11

When very dense material is heated, it produces a continuous spectrum. A continuous spectrum is an electromagnetic radiation that displays a continuous range of wavelengths or colors.

The spectrum has no gaps or breaks and is seen as a smooth, unbroken band of colors that blend into each other.A continuous spectrum is created by solids, liquids, and dense gases when heated. The molecules in these materials begin to move around more quickly when they absorb thermal energy.

As a result of this motion, the electrons in the atoms within the material are excited to higher energy levels.This means that the electrons move from lower energy levels, which are closer to the atomic nucleus, to higher energy levels, which are further away from the nucleus. When the electrons transition back to their lower energy states, they release energy in the form of electromagnetic radiation.

The radiation that is released includes a continuous range of wavelengths, which produce a continuous spectrum.Continuous spectra are important in astronomy because they help scientists learn about the temperatures of the objects producing the radiation. By analyzing the spectrum, they can determine the temperature of the object.

To know more about spectrum visit :

https://brainly.com/question/12157930

#SPJ11

Answer:

870 m

Explanation:

d = Vit + 1/2at²

a = ΔV/Δt = (85 m/s - 60 m/s) / (12 s) = (25 m/s) / 12 s = 2.08 m/s²

d = (60 m/s)(12 s) + 1/2 (2.08 m/s²)(12 s)² = 870 m

Answer:

The automobile traveled 870 meters during the 12 second interval.

Explanation:

We can use this kinematics equation to evaluate how far the automobile traveled.

\(\overline v=\frac{\Delta x}{\Delta t}\)

Note

\(\overline v\) is the average velocity

\(\Delta x\) is the change in position (displacement)

\(\Delta t\) is the change in time (time interval)

The formula for average velocity is

\(\overline v=\frac{V_f-V_o}{2}\)

We are given

\(V_f=85\\V_o=60\\\Delta t=12\)

First lets evaluate the average velocity.

\(\overline v=\frac{85-60}{2}\)

\(\overline v=72.5\)

Rearranging our kinematics equation to isolate \(\Delta x\) we get

\(\Delta x=\overline v \Delta t\)

Now lets evaluate \(\Delta x\).

\(\Delta x=72.5*12\\\Delta x=870\)

There are many different ways you can solve this; I could have used a different equation.

Answer: hello your question lacks the required diagram attached below is the required diagram

answer : Both cars will move backwards and stop due to friction.

Explanation:

Given that both cars are negatively charged, When the wedges are removed both cars will move backwards ( repelling each other ) because they are like poles, and Like poles repel each other. while unlike poles attract each other ( forward movement )  .

The cars will later come to a stop due to frictional forces between the cars and the surface.

Answer:

The sun is mainly made up of 75 percent hydrogen and 25 percent helium by mass; the sun's is also composed of less than 0.1 percent various metals and elements, including neon, iron, oxygen and carbon. These atoms form hot plasma that is interwoven with the sun´s magnetic fields.

Hope i helped :)

Explanation:

Answer:

Option B is the correct definition of an isotope

Answer:

two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei

Explanation:

Answer:

b. 220 V

Explanation:

Let resistors be R1, R2, and R3 respectively.

Given the following data;

R1 = 20 ohms

R2 = 30 ohms

R3 = 60 ohms

Current = 2 Amperes

To find the voltage;

First of all, we would determine the total effective resistance (RT).

For series circuit;

RT = R1 + R2 + R3

RT = 20 + 30 + 60

RT = 110 Ohms

Next, we find the voltage using the formula;

Voltage = current * resistance

Voltage = 2 * 110

Voltage = 220 Volts

Answer: solute: sugar, coffee powder, salt, cocoa powder, liquid detergent, monosodium glutamate (vetsin).

solvent: cow's milk, water, fruit extract

Explanation:

A solution is a mixture that is made up of two or more substances including solute and solvent.

The solute is one which can be dissolved in a liquid part that is solvent. The solute can be liquid or solid. Solutes are sugar, salt, coffee powder, cocoa powder, liquid detergent, monosodium glutamate.

The solvent is one which dissolves in it solute particles or molecules. Solvent are cow's milk, water, and fruit extract.

A continuous load of 27 ampere requires the circuit overcurrent protection device to be sized at 35 ampere.

To decide the circuit overcurrent security gadget size for a ceaseless heap of 27 amperes, we really want to think about the NEC rules and explicit prerequisites for the circuit.

The NEC expects that the circuit overcurrent security gadget (OCPD) be measured at 125% of the nonstop burden, and that implies that the OCPD should be appraised for no less than 33.75 amperes (27 amperes x 1.25).

Also, the NEC expects that we gather together the OCPD size to the following standard rating that is accessible on the lookout. For instance, a 35-ampere OCPD would be the following standard size accessible to safeguard the circuit with a ceaseless heap of 27 amperes.

Thusly, the circuit overcurrent security gadget should be measured at least 33.75 amperes and gathered together to the following standard size, which is 35 amperes for this situation.

To learn more about overcurrent protection device, refer:

https://brainly.com/question/28283140

#SPJ4

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 40 \times {0.6}^{2} \\ = 20 \times 0.36 \\ = 7.2\)

We have the final answer as

Hope this helps you

The majority of the Milky Way's mass, however, appears to be made up of a type of matter (opens in new tab) that does not interact with light, according to a number of lines of evidence, not the least of which is the fact that material in the galaxy orbits the center too quickly to be held together by the gravity of visible objects.

To learn more about milky way refer

https://brainly.com/question/13956361

#SPJ4

Surprisingly fast orbital velocities of stars and gas clouds located far from the galactic center point to the possibility of gravitational forces from unobserved materials.

To learn more about milky way refer

brainly.com/question/13956361

#SPJ4