PLZ ANSWER THISSSSS!!!! FIRST ONE, I WILL MARK BRAINLIST!!!
What is the current of a 24 ohm heating coil in a coffee maker plugged into a 120V outlet?

What voltage will produce 6 amps through a circuit that has 10 ohms of resistance?

Answer:

Explanation:

R-total (parallel) = 1/10 + 1/30 = 0.13 Ω

R-total (series) = 500 + 120 = 620 Ω

Answer: The scientific revolution began in Europe toward the end of the Renaissance period, and continued through the late 18th century, influencing the intellectual social movement known as the Enlightenment

Explanation:

Answer:

Usually when climbing, it's best to be in the small front ring and the largest back ring. If your cadence is about 100 rpm, then whatever gear you're in is fine. It depends on the road, but as long as your pedaling is at a level you're comfortable with, you're fine.

Explanation:

Google answer by the way.

The maximum EMF induced in the coil by the Earth's magnetic field is zero.

We can use Faraday's law of electromagnetic induction to calculate the maximum EMF induced in the coil by the Earth's magnetic field. Faraday's law states that the EMF induced in a coil is equal to the rate of change of the magnetic flux through the coil.

Assuming the loop is a circle of radius r, the magnetic flux through the loop due to the Earth's magnetic field is given by:

Φ = B * A * cosθ

where B is the horizontal component of the Earth's magnetic field, A is the area of the loop, and θ is the angle between the normal to the loop and the direction of the magnetic field. Since the loop is lying flat on the ground, θ = 0, and cosθ = 1.

The area of a circle is A = π\(r^2\), so we have:

Φ = B * π\(r^2\)

The rate of change of the magnetic flux through the loop is given by the time derivative of Φ:

dΦ/dt = d(B * π\(r^2\))/dt = π\(r^2\) * dB/dt

Since the horizontal component of the Earth's magnetic field is constant, dB/dt = 0, so the rate of change of the magnetic flux is zero.

Therefore, the maximum EMF induced in the coil by the Earth's magnetic field is zero.

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Explanation:

Thead are gravitational poles, red is positive and blue is negative. They are attracting, as you can see from the middle. that's all I know, sorry

The spring constant of the spring is approximately 1.59 N/m.

To calculate the spring constant of the spring, we can use the formula:

f = 1 / (2π) * √(k / m)

Where:

f is the frequency of vibrations

k is the spring constant

m is the mass attached to the spring

In this case:

Frequency (f) = 5.00 Hz

Mass (m) = 4.00 g = 0.004 kg

We can rearrange the formula to solve for the spring constant (k):

k = (2π * f)² * m

Substituting the given values:

k = (2π * 5.00)² * 0.004

k ≈ 1.59 N/m

Therefore, the spring constant = 1.59 N/m.

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Answer:

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

Explanation:

Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resistors are also implemented within integrated circuits.

The electrical function of a resistor is specified by its resistance: common commercial resistors are manufactured over a range of more than nine orders of magnitude. The nominal value of the resistance falls within the manufacturing tolerance, indicated on the component.

Answer:

Explanation:

The answer should be electromagnetic radiation(can i have a a brainliest) please

The increased levels of ultraviolet -radiation reaching earth can lead to health risks such as sunburn and skin cancer.

Ultraviolet radiation is a high energy wave in the electromagnetic spectrum. The mains source of ultraviolet or UV rays is sun.

The electromagnetic spectrum is the arrangement of radiation based on the increasing order of energy or decreasing order of frequency. UV rays comes in between infra red radiation and visible light.

There are two type of ultraviolet rays namely UV-A and UV-B. In which UV-A has higher penetrating power and causes serious health risks than UV-B.

Reaching UV rays in an increased level to the earth surface will affect human beings as well as other organisms. It causes skin cancer, nausea, burning and other  diseases.

Therefore the two words which suits to fill the statement is UV radiation.

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Answer:

option b

Step by step explanation:

a dull black surface is a good radiator of heat

Answer:

option b is the answer

Answer:

The correct option is:

O add the numbers from the three sliders to determine the mass of an object

A promising evidence of a habitat that might support life on the planet Mars is water.

There is evidence supporting the existence of liquid water on Mars from numerous sources. The finding of repeated black streaks on Martian slopes and the presence of hydrated minerals suggest the potential of seasonal or location-specific briny water flows. A necessary component of life as known is liquid water.

Additionally, Mars possesses underground ecosystems that could provide defence against radiation and severe surface conditions. Researchers have found evidence of ancient underground hydrothermal systems as well as beneath ice. These settings might offer consistent conditions for the development of microbial life.  Methane gas has been found in the Martian atmosphere, along with variations over time, and this has led to questions regarding its origin. Both geological and biological processes can result in the production of methane.

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Answer:

300 Newtons

Explanation:

Weight is the force of attraction between two bodies, one usually larger (like a planet), and one smaller (like a person). Force can be calculated using the formula: Force = mass × acceleration.

The mass here is 12kg, the acceleration, which in this case, is the acceleration due to gravity is 25m/s/s, by plugging in our values, we have

Force = 12 × 25 = 300 Newtons or 300 N for short.

Answer:

5.3333 sec

Explanation:

initial speed: u = 108km/hr or 30 m/s

final speed: v = 0m/s

distance travelled: s = 80m

time the car took to stop: = t sec

\(v^{2} - u^{2}\) = 2as,

a = (\(v^{2} - u^{2}\))/2s

a = (0-900)/160

a = -5.625 \(ms^{-2}\)

v = u + at,

t = (v - u)/a

t= (0 - 30)/(-5.625)

t = 5.3333 sec

The coordination of the rocket relative to its firing point is 688.32m and 277.44m.

What is coordination?

The purpose of organizing people or groups so they work together properly.

Sol-

The X and Y coordinates of the rocket relative of firing

As per the given question

Velocity (vi)=100ms-1

Angle=55.0

Time (t)=12

The horizontal range of projectile at X is

X=vxi×t

x=vi×cos×t

Now substituting the required value we get

X=300×cos 55×12

X=100×0.5756×12

X=688.32 m

Now substituting the recauird value

We get

Y= 983.04-705.6

Y=277.44m

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Answer:

yes because you need energy even for eye blinking

Answer:

Electrolytic manganese dioxide (EMD) is used in zinc-carbon batteries together with zinc chloride and ammonium chloride. EMD is commonly used in zinc manganese dioxide rechargeable alkaline (Zn RAM) cells also. For these applications, purity is extremely important.

Explanation:

hope this helps...

Answer:

Student A is correct

Explanation:

Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The reflected wavelengths appear green. In each case we are seeing the complementary colors to the ones absorbed.

In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.

It is a physical change in which liquids give off heat to form solids.

We have 210.0 g of water at 0°C. We can calculate the amount of heat given off when it freezes into ice using the following expression.

Q = ΔH°fus × m

Q = 0.334 kJ/g × 210.0 g = 70.1 kJ

where,

In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.

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Answer:

Chemical changes, such as rotting fruit and burning wood, are affected by temperature. More heat and energy causes a faster chemical change.

Explanation:

The best statement that Jacinta can add to her passage is:

Chemical changes, such as rotting fruit and burning wood, are affected by temperature. More heat and energy cause a faster chemical change.

This statement is correct because temperature is a factor that influences the rate of chemical reactions. Higher temperature means more kinetic energy for the molecules, which increases the chances of collisions and bond breaking. This leads to faster chemical changes and new substances being formed. The other statements are either incorrect or irrelevant to the topic of chemical changes.

Answer:

30 ms⁻¹

Explanation:

Given:

108kmh⁻¹

Find:

Change into ms⁻¹

Computation:

⇒ 1 km = 1,000 m

⇒ 1 hour = 60 x 60 = 3,600 sec

So,

⇒ 108[1,000/3,600]

30 ms⁻¹

Answer:

its blue

Explanation:

on edg

B) Blue

It is indeed correct on Edge 2021

Simply put different aspects of the electromagnetic spectrum reflect differently. Certain chemicals will absorb different frequencies of light while reflecting others.

The force that the 5.0-A wire exerts on a 50 cm-length of the 2.0-A wire is 2.0 x 10^-4 N.

The force that the 5.0-A wire exerts on a 50 cm-length of the 2.0-A wire can be calculated using the formula:

F = (μ₀/4π) * (I₁ * I₂ * L) / d

Where:
- F is the force between the wires
- μ₀ is the permeability of free space (4π x 10^-7 Tm/A)
- I₁ and I₂ are the currents in the wires (5.0 A and 2.0 A, respectively)
- L is the length of the wire (50 cm or 0.5 m)
- d is the perpendicular distance between the wires (5.0 cm or 0.05 m)

Plugging in the values, we get:

F = (4π x 10^-7 Tm/A) * (5.0 A * 2.0 A * 0.5 m) / 0.05 m
F = 2.0 x 10^-4 N

Therefore, the force that the 5.0-A wire exerts on a 50 cm-length of the 2.0-A wire is 2.0 x 10^-4 N.

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Answer:

Yes, when the velocity of the object is negative.

Explanation:

In position and time graphs, the slope of line indicates the velocity. Therefore negative slope of a position-time graph actually indicates negative velocity. Negative velocity is defined as the velocity of the object moving in an opposite direction.

The time graph reveals pertinent information about an object's velocity. For example, a small slope means a small velocity; a negative slope means a negative velocity; a constant slope (straight line) means a constant velocity; a changing slope (curved line) means a changing velocity.

Answer:

T = 640N

Explanation:

In order to calculate the tension on the wire you use the following formula:

\(v=\sqrt{\frac{T}{m/L}}\\\\T=\frac{v^2m}{L}\)   (1)

T: tension on the wire

v: speed of the transverse wave

L: length of the wire = 1.0 m

m: mass of the wire = 100 g = 0.1kg

Then, you need to calculate the speed of the wave by using the information about the wavelength and the frequency of the wave. You use the following formula:

\(v=\lambda f\)     (2)

λ: wavelength = 0.10 m

f: frequency = 800Hz

You replace the values of the parameters in the equation (2):

\(v=(0.10m)(800Hz)=80\frac{m}{s}\)

Next, with the information about the speed of the wave you can calculate the tension on the wire by using the equation (1):

\(T=\frac{(80m/s)^2(0.1kg)}{1.0m}=640N\)

The tension on the wire is 640 N

Here the focal length of the convex mirror as -12 cm, a light bulb with a diameter of 6 cm is placed 60 cm from the mirror. Hence, the image distance is -60 cm, and the image height is 6 cm.

To find the image distance and height, we will use the mirror formula for a convex mirror, which is given as follows;1/f = 1/v + 1/u. Where, f = focal length of the convex mirror;

v = the image distance;

u = the object distance

If the object distance is positive, it means the object is placed in front of the mirror, and if it is negative, it means the object is placed behind the mirror. The focal length of a convex mirror is always negative, as given above.

Therefore, u = -60 cm and f = -12 cm.

Plugging in the values in the mirror formula, we get:1/-12 = 1/v + 1/-60=> -5/60 = 1/v - (1/60) => -5/60 = (60 - v)/60=> v = -300/5= -60 cm

The image distance is -60 cm, which means the image is virtual and erect. The negative sign indicates that the image is formed behind the mirror.

To find the image height, we use the magnification formula:

m = -v/u= -(-60)/(-60)= 1

The magnification is 1, which means the image is of the same size as the object. The height of the light bulb is 6 cm, so the height of the image will also be 6 cm.

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Answer:

he is the first person can be 3in and a 6man is the best not a man of the hartford

Option C is correct. Frequency can be found by counting the number of troughs per second in a wave diagram.

Frequency is defined as the number of repetitions of waves occurring in 1 second. It can also be said that Frequency is defined as the number of cycles completed in 1 second.

Frequency is given by the formula as,

\(\rm f=\frac{1}{t}\) Hz.

Hence option C is correct. Frequency can be found by counting the number of troughs per second in a wave diagram.

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Answer:

C is correct

Explanation:

The area of the coil and the variation in the magnetic field both affect the induced current. The area A that each loop in a coil of wires adds to the right-hand side of the equation ensures that the induced emf is proportionate to the number of loops in the coil.

Imagine a flux line going straight into each of the x's on the board when a coil of wire attached to an ammeter is set in a steady magnetic field. The Coil Area slider can be moved to change the coil's area, which changes the area inside the coil through which the magnetic field is passing. There is an electric current generated when the slider is moved, as indicated by the ammeter, and the direction of the current is indicated by the ammeter reading (positive or negative) and the accompanying black arrows. Observe that the speed at which you change the coil form slider affects how soon the ammeter responds.

Given that an induced current's intensity largely depends on when the coil is adjusted quickly, the magnetic flux changes more quickly than when it is adjusted slowly, giving rise to higher values on the ammeter.

If a conducting loop is subjected to a fluctuating magnetic field, a current can be induced in the loop. The magnetic field's strength can be changed, the conductor can be moved in and out of the field, the distance between a magnet and the conductor can be changed, or the area of a loop in a steady magnetic field can be altered. Whatever method is used to create the variation, the end consequence, an induced current, remains the same. According to Faraday's law of induction, the current's intensity will fluctuate in direct proportion to the change in magnetic flux.

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