can someone please help me ​

Answer:

Energy = Power × Time

We make Time the subject in this equation

Time = Energy ÷ Power

Time = 10000 ÷ 400

Time = 25seconds

Answer:

a

Explanation:

Answer:

Certain Things Make Light Bend?

Explanation:

Transparent Objects/ things can make light bend when entering through it.

Answer:

So, insulation essentially works by creating a sort of barrier between the hot and the cold object. This barrier helps to reduce heat transfer by either reflecting the thermal radiation or by decreasing thermal conduction and convection from one object to the other.

Answer:

So, insulation essentially works by creating a sort of barrier between the hot and the cold object. This barrier helps to reduce heat transfer by either reflecting the thermal radiation or by decreasing thermal conduction and convection from one object to the other.

Explanation:

Looking at the placement of primary colors in the RGB color wheel, the mixing of the red and green colors will create Yellow secondary color.

The secondary color that is made by mixing red and green in the rgb additive-color scheme for light is Yellow.

Red, blue, and some are primary colors. Primary colors cannot be mixed with secondary colors.

All other colors are derived from them. Secondary colors are created by combining two primary colors that are adjacent to each other on the color wheel. Orange, green, and violet are the secondary colors.

As an accent color, a secondary color can be combined with a primary color. The primary color remains dominant, but the secondary color is used in tandem to draw attention.

The sum of two primary colors of equal intensity yields a secondary color: cyan is green+blue, magenta is blue+red, and yellow is red+green.

Thus, the secondary color of red and green combination is yellow.

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The behaviour that has just been displayed by the girl is an example of a learned behavior.

The term learned behaviour has to do with those behaviour that the individual acquires by practise and are not innate in the organism. The ability to drink a large amount of water without breathing is not inate in man.

Hence, the behaviour that has just been displayed by the girl is an example of a learned behavior.

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Answer:

energy left over from the big bang

Explanation:

Answer: λ = 0.245 nm

Explanation:

KE = qV

V = 25.0 V

where q = e = 1.6*10^-19

KE = (1.6*10^-19)(25.0 V)

KE= 4.0 * 10^-18 J

λ = [tex]\frac{h}{\sqrt{2mKE} }[/tex]

mass of electron = 9.11 * 10^-34

λ = [tex]\frac{6.626*10^{-34} }{\sqrt{(2)(9.11*10^{-31})(4.0*10^{-18}) } }[/tex]

λ = 2.45 e -10 m

λ = 0.245 nm

Let F be the magnitude of the frictional force. This force performs an amount of work W on the bullet such that

W = -Fx

where x is the distance over which F is acting. This is the only force acting on the bullet as it penetrates the tree. The work-energy theorem says the total work performed on a body is equal to the change in that body's kinetic energy, so we have

W = ∆K

-Fx = 0 - 1/2 mv²

where m is the body's mass and v is its speed.

Solve for F and plug in the given information:

F = mv²/(2x)

F = (0.00426 kg) (881 m/s)² / (2 (0.0444 m))

F = 37,234.8 N ≈ 37.2 kN

The area of reaserch in which Kepler worked is the area of  the retrograde motion of the sun.

Kepler is most known for his popular laws that deal with the idea of planatary motion. There are three laws of planetary motion as described by Kepler.

Hence, the area of reaserch in which Kepler worked is the area of  the retrograde motion of the sun.

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Answer:

its actually D.the retrograde motion of mars

Answer:

Light shone on metal expulses electrons from its surface. This phenomenon is the photoelectric effect, and the electrons are called photoelectrons. Experiments indicate that by increasing light frequency, the kinetic energy of the photoelectrons increases, and by intensifying the light, the current increases

When the investigator wanted to reproduce the results with a beam of protons, the thing required is A. Lower speed particles than for the electron beam.

It should be noted that a proton simply means a stable subatomic particle that has a positive electric charge.

In this case, when the investigator wanted to reproduce the results with a beam of protons, the thing required is a lower speed particles than for the electron beam.

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Answer:

Resonances occur at:

OC       OCOC         OCOCOC       OCOCOCOC      OCOCOCOCOCλ

λ/4          3λ/4               5λ/4                 7λ/4                    9λ/4

A resonance occrurs at λ/4

Thereafter, resonance occurs every λ/2

The fifth resonance will occur at λ/4 + 2λ = 9λ/4

If λ / 4 = 10 m         then       λ = 40 m

9 λ / 4 = 10 m    because the pipe is 10 m long

λ = 40 m / 9 = 4.44 m          the fifth resonance occcurs at a wavelength of 4.44 m

f λ = c = 340 m/sec

f = 340 m/sec / 4.44 m = 76.5 / sec

Note: the first resonance occurs at f = 340 / 40 = 8.5 /sec

It is a false statement that; "when charging a secondary cell, energy is stored within a dielectric material using an electric field"

The term secondary cell refers to a cell that can be recharged when it is used up. A typical example of a secondary cell is a lithium ion battery.

We know that most of the secondary cell are charged using a chemical that is inside the battery. As such, it is a false statement that; "when charging a secondary cell, energy is stored within a dielectric material using an electric field"

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The percentage of the initial mechanical energy of the apple-earth system that was dissipated is : 84%

Given that

Potential energy = mgh = 0

                           = m* 9.81 * 500 = 0

                           = 4905 m J

Kinetic energy ( K ) = 1/2 mv²

                                 = 1/2 * m * 40²

                                 = 800 m

Next step : calculate the dissipated energy

dissipated energy = Potential energy - kinetic energy

                              = 4905 m - 800 m

                              = 4105 m

Final step : determine the percentage of the dissipated energy

= dissipated energy / potential energy

= 4105 m / 4905 m

= 84%

Hence we can conclude that The percentage of the initial mechanical energy of the apple-earth system that was dissipated is : 84%

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The number of galaxies similar in size to the milky way that one can expect to find in cubes of that same size will be 64.

It should be noted that milky way simply means a spiral galaxy shaped that contains stars.

Here, the number of galaxies similar in size to the milky way that one can expect to find in cubes of that same size will be 64.

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What distinguishes asteroids from other solar system objects is that they always have irregular, "potato-like" shapes, it's a true statment.

Asteroids are rocky, metallic objects that orbit the Sun, but too small to be considered planets. They are known as secondary planets. Asteroids range in size: from Ceres, which has a diameter of about 1000 km, to the size of boulders.

In this case, For very small asteroids, it is not difficult to accept that they are irregularly shaped either because they have not grown enough, or because they are pieces of larger bodies that collided.

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Answer:

C.

Explanation:

I think it's c please let me know if it's incorrect

Thr only way living things can slow down the process of entropy is through anabolic processes.

Entropy is the degree of disorderliness or randomness of a substance.

According to the second law of thermodynamics, the entropy of a system always tends to increase.

Metabolism in living things involves two processes:

Catabolism increases entropy whereas anabolism decreases entropy.

Therefore, the only way living things can slow down the process of entropy is by anabolic processes.

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Answer:

True

Explanation:

Examples: factory workers at Tyson complain of pains because of doing the same motion for 8 hours a day and how ever many days a year.

Answer:

450m because you multiply the force to the distance to get how much work you've done.

Answer:

Reflection

Explanation:

Answer:

84%

Explanation:

Find a ratio