Voltage across an air filled parallel-plate capacitor is measured to be 85.0 V. When a dielectric is inserted and completely fills the space between the plates, the voltage drops to 25.0 V. What is the dielectric constant of the inserted material?

Light source will pass through and form a shadow, when I hold the largest cardboard between the light source and the wall. Since, the cardboard is not so thick it will allow rays to pass through it.

Light rays always travel in a straight line. A shadow is formed when the light rays hit an opaque object. Sun is a natural source of light. The rays from the sun fall on objects on earth and forms shadows. Light rays do not interfere with each other if they come cross each other. Light rays travel from the direction of source to the direction of eye. They show property of reflection wherein after colliding a surface they trace their path back.

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I'm guessing 6.

the coefficient of two turns our hydrogen into 4 and our oxygen into 2 which makes a total of 6 molecules.

If the resistance remains constant and the voltage doubles, the power will increase by a factor of 4 (option E)

The following data were obtained from the question:

P = V² / R

Resistance is constant, we have

V₁² / P₁ = V₂² / P₂

V² / P = (2V)² / P₂

V² / P = 4V² / P₂

Cross multiply

V² × P₂ = P × 4V²

Divide both side by V²

P₂ = P × 4V² / V²

P₂ = P × 4

From the above, we can conclude that the power will increase by a factor of 4 (option E)

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The period of revolution of the satellite in lunar months is:T_lunar = T/(2.36 × 10^6)

We can use Kepler's third law to relate the period of revolution of a satellite in circular orbit to its distance from the center of the body it orbits:

(T^2)/(R^3) = (4π^2)/(GM)

where T is the period of revolution, R is the radius of the orbit, G is the gravitational constant, and M is the mass of the body being orbited.

We can simplify this equation by expressing the radius of the orbit of the satellite in terms of the radius of the Moon's orbit. Let R_m be the radius of the Moon's orbit, then the radius of the satellite's orbit is:

R = 0.44R_m

Substituting this into Kepler's third law and solving for T:

(T^2)/[(0.44R_m)^3] = (4π^2)/(GM_e)

T^2 = [(0.44R_m)^3(4π^2)]/(GM_e)

T = √[(0.44R_m)^3(4π^2)/(GM_e)]

where M_e is the mass of the Earth.

To express the period in lunar months, we need to divide the period in seconds by the period of one lunar month. The period of one lunar month is approximately 27.3 days or 2.36 × 10^6 seconds.

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Answer:

I’m so sorry I tried solving it but I don’t understand it can you explain the question a little bit more ty

Explanation:

Answer:

its A

Explanation:

I just did it :)

Seasons are caused by the tilt of the Earth's axis. Winter and summer are determined by the tilt of the earth towards or away from the sun. The Earth's axial tilt changes every 41,000 years.

Earth's axial tilt is the angle between the Earth's rotational axis and the plane of its orbit around the sun. The current tilt of the Earth's axis is about 23.5 degrees relative to the plane of its orbit. This tilt is responsible for the changing seasons as the Earth orbits the sun.

The axial tilt of the Earth is not constant but changes over a cycle of about 41,000 years. This cycle is known as the obliquity cycle and is caused by gravitational interactions between the Earth and other celestial bodies such as the Moon and Jupiter.

During this cycle, the tilt of the Earth's axis varies between 22.1 and 24.5 degrees, which results in a change in the amount of solar radiation received at different latitudes. This, in turn, affects the distribution of heat on the Earth's surface and influences the climate.

The effect of this cycle on the climate is relatively small compared to other factors such as greenhouse gases and ocean currents. However, it is believed to have played a role in past climate changes, including the ice ages.

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Answer: destructive interference

Explanation: maximum points of a wave and minimum points of

Another wave overlap and sum is zero

The potential difference required across the ends of the copper wire is 36.9 V.

The potential difference required across the ends of the copper wire can be calculated using Ohm's law, which states that the potential difference (V) is equal to the product of the current (I) and resistance (R), i.e., V = IR.

The resistance of the wire can be calculated using the formula for the resistance of a cylindrical conductor: R = ρL/A, where ρ is the resistivity of copper, L is the length of the wire, and A is the cross-sectional area of the wire.

Therefore, R = (1.68 x 10^-8 Ωm) x (3.74 m) / π(0.095 x 10^-3 m)^2 = 2.22 Ω.

Substituting the values of I and R in Ohm's law, we get V = (16.62 A) x (2.22 Ω) = 36.9 V.

Therefore, the potential difference required across the ends of the copper wire is 36.9 V.

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Answer:

Explanation:

I'm assuming you missed the decimal point in the initial velocity and that it should be 4.0 m/s. If after a half of a second it is moving a tiny bit slower, it would be because of air resistance. You can only neglect air resistance if the problems you are doing tell you neglect it.

Answer:

Air resistance

Explanation:

I got it correct on the quiz :)

The magnitude of the torque about the bolt due to the worker and the weight of the beam is 13,798.4 Nm

The length of the steel = \(r_{2}\) = 4.4 m

The mass of the steel= \(m_{1}\) = 500 kg

The mass of the worker = \(m_{2}\) = 70 kg

Let , the total torque = \(\tau_{t}\)

The centre of gravity = \(r_{1}\)

                                   =4.4/2

                                   = 2.2

\(\tau_{t} = \tau_{1} +\tau_{2}\\\\\tau_{t} = F_{1}r_{1} + F_{2}r_{2} \\\\\text{We know that},F = mg \\\\\tau_{t} = m_{1}gr_{1} + m_{2}gr_{2}\\\\\tau_{t} = (500* 9.8* 2.2) +(70*9.8* 4.4)\\\\\tau_{t} = 13,798.4 Nm\)

The magnitude of the torque about the bolt due to the worker and the weight of the beam is 13,798.4 Nm.

The complete question is:

A 4.40-m-long, 500 kg steel uniform beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the bolt due to the worker and the weight of the beam?

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Answer:

Ok I’m not pretty sure but I think it’s C but look for more answers first before you put C  because I don’t want you to get it wrong. :)

Explanation:

Answer:

i think the answer is The nonmetal takes up more space.

Explanation:

i hope this helps

Answer:

Option A

Explanation:

If the graph plotted against Distance and Time and the graph is a linear straight line then the body is IN CONSTANT VELOCITY.And Acceleration is 0

Answer:

The strength of gravity decreases.

An example of that would be if you were in space; you float around because there's no gravity.

Answer:

false

Explanation:

As both parents contribute half of the new organism's genetic material, the offspring will have traits of both parents, but will not be exactly like either parent

Answer:

False

Explanation:

The only time you end up like your parent is asexual reproduction

To convert the provided decimal number to a percent, all we need to do is multiply it by 100.

The random variable E(X) of the data is predicted to have a value of 4.0. The formula: gives the expected value of a random variable X. P = E(X) = x * x (X = x). where represents the whole sum of x's potential values. In this instance, the probability associated with the potential values of x are 0.2, 0.1, 0.2, 0.1, and 0.4, respectively. With these values entered into the formula, we obtain: E(X) = (2 * 0.2) + (3 * 0.1) + (4 * 0.2) + (5 * 0.1) + (6 * 0.4). = 0.4 + 0.3 + 0.8 + 0.5 + 2.4 = 4.0. The predicted value of X, rounded to one decimal place, is 4.0. Regardless matter how many zeros have been added to the provided decimal value during multiplication, the decimal is always moved to the right.  

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Explanation:

Cause it multiples force which makes it easier to move.

Light is a form of electromagnetic radiation with a wavelength which can be detected by the human eye. It is a small part of the electromagnetic spectrum and radiation given off by stars like the sun. Animals can also see light. The study of light, known as optics, is an important research area in modern physics.

Answer:

hope it is helpful to you

The statement that describes at t =5 second is is the object speed up.

According to Newton's second law of motion, the acceleration of a body is equal to the net force acting on the body divided by its mass, a = Fm. This acceleration equation can be used to calculate the acceleration of an object if the mass of the object and the net force acting on it are known. The only acceleration of the projectile is the downward acceleration due to gravity.

The projectile has a vertical acceleration of 9.8 m/s/s throughout its trajectory. This acceleration value is constant. This means that the vertical velocity changes by the same amount every second. Instantaneous velocity is the speed of an object at a particular point in time. If the velocity is constant the average velocity for any time interval will not differ from the instantaneous velocity at that point in time.

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Answer:

When white light shines on the bubble, it acts as a prism. While some of the white light bounces back off, some of them pass through the prism forming fringes of colors. But then, they too bounce off the inner part of the film. So one set of light rays shine into a soap bubble, but two sets of rays come back out again. When they emerge, the waves that bounce off the inner film have traveled a tiny bit further than the waves that bounced off the outer film. So, we have two sets of light waves. After that, the waves starts merging (Just like the ripples in the pond) . Some add together while some cancel out. That is why we see the pattern of colors repeating in the thin film soap.

Answer:

The answer is below

Explanation:

Plants that grow among many tall trees in a dense forest could adapt so that they could get enough air and water through the following means:

1. By becoming climbers. Here they climb up the nearby trees to get more air and sunlight.

2. Plants grow leaves that have pointed tips. This allows the passage of water in the plant's leaves without causing damage.

3. Some plants grow as epiphytes, where they grow on big trees' canopy

A specialized part of a cell which has a specific location is called an organelle.

Overall, organelles are specialized parts of a cell that have a specific location and job. They are responsible for carrying out the various functions of the cell, and each type of organelle has a specific role.

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Answer:

The block didn't slide due to balancing of gravitational force with friction force

Explanation:

When the block was given a flick the force provided an acceleration to it and it moved up the inclined plane. when the block reached top it was expected that it would slide back but it didn't this happened because of the frictional force acting on the bottom the block which was balancing the gravitational force component along the plane and this prevented sliding back of the block.

static friction  was balancing mg*sin(theta)

fs = mg*sin(theta)

It is to be noted that the correct expression for the gravitational force exerted on the astronaut by Earth on the basis described above is:

Fg=G MeMa/r²e

Gravity is a basic interaction in physics that produces mutual attraction between all entities that have mass or energy.

Gravity maintains the planets around the sun and the moon orbiting the Earth. The moon's gravitational pull attracts water, causing ocean tides. Gravity creates stars and planets by attracting the elements that go into their formation.

Gravity waves are 'ripples' in space-time caused by some of the most destructive and powerful occurrences in the Universe. In 1916, Albert Einstein predicted the existence of gravitational waves in his general theory of relativity.

The gravitational force has the lowest non-contact strength in nature. It adheres to the inverse square law. It is always positive. It is directly proportional to the product of the two bodies' masses.

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The power of a statistical test refers to its ability to detect statistically significant differences between groups or variables.

It is defined as 1-β, where β represents the probability of making a Type II error, or failing to detect a true difference. In other words, a high power value means that the test is more likely to correctly identify significant differences, while a low power value means that it is more likely to miss them. Power is influenced by a variety of factors, including sample size, effect size, and alpha level, among others. It is an important consideration when designing and interpreting statistical analyses.

The power of a statistical test is defined as the probability of rejecting the null hypothesis when it is false, or in other words, the probability of detecting a statistically significant difference when one actually exists. It is often denoted by the symbol "1-β", where β represents the probability of making a Type II error, which is the error of failing to reject the null hypothesis when it is false.

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Answer:

What features of your design helped your rocket hit the target? (Key factors include the rocket's weight, launch angle, ability to fly straight, and the balloon's pressure.) After testing, what changes did you make to your rocket and launcher? (Answers will vary.)

Explanation:

PLEASE GIVE ME BRAINLIEST IF NEW YOULL SEE NEAR MY ANSWER MARK AS BRAINLIEST IF NOT YOULL HAVE TO WAIT A DAY AND BRAINLY WILL REMIND YOU

For the following:

The change in momentum of the body on striking the ground is equal to the initial momentum before firing vertically upward, which is p. Therefore, the answer is (b) p.

The temperature of a body depends upon the average kinetic energy of molecules. Therefore, the answer is (b) speed.

The distance moved by the force is equal to the product of the initial velocity ( V₀) and the time (1 sec) plus half the product of the force (F) and the square of the time (1 sec) divided by the mass (1 kg).

Therefore, the answer is (b) V₀ + F/2.

The total kinetic energy before the explosion is equal to the sum of the kinetic energies of the two pieces after the explosion.

Since the mass and velocity of one of the pieces, calculate its kinetic energy using the formula KE = (1/2)mv².

Therefore, the kinetic energy of the other mass is (b) 32J.

Foams and cotton clothes are used to absorb water because of their (c) capillary action. Capillary action refers to the ability of a substance to draw liquid into its small spaces or pores.

In a spectrum, red color is deviated to a lesser extent than all the other colors because its velocity is (b) less than all the other colors. The speed of light in a medium depends on the refractive index, which is different for different colors. Red light has a lower refractive index compared to other colors, causing it to be deviated to a lesser extent.

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Answer:

8

Explanation:

thc jhjhhdb hhvb. ggjv. j h. vhvhhhdh.