A student places his hand in front of a plane mirror as shown in the diagram. Which terms correctly describe the image that the mirror forms?

Answer:

1AlBr3+ 3K ---> 3KBr + 1Al

Explanation:

Explanation:

 A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.

Answer: The energy from the sun is one great example of radiation. The sun emits light in a broad range of wavelengths which all contain energy. These waves are also discussed in the climate section for energy balance. The waves are emitted from the sun and travel through space and hit the earth and other planets.

EXTRA EXAMPLES: heat from a stove burner.

visible light from a candle.

x-rays from an x-ray machine.

alpha particles emitted from the radioactive decay of uranium.

sound waves from your stereo.

microwaves from a microwave oven.

electromagnetic radiation from your cell phone.

Answer:

Energy can remain in the same store for millions of years or sometimes just for a fraction of a second. There are energy transfers going on all the time - whenever a system changes there is a change in the way some or all of the energy is stored.

Transferring energy

In each of these examples, energy is transferred by one of the following four types of energy transfer:

mechanical work - a force moving an object through a distance

electrical work - charges moving due to a potential difference

heating - due to temperature difference caused electrically or by chemical reaction

radiation - energy tranferred as a wave, eg light and infrared - light radiation and infrared radiation are emitted from the sun

Doing 'work' is the scientific way of saying that energy has been transferred. For example, a grazing cow, a firing catapult and a boiling kettle are all doing 'work', as energy is being transferred.

Energy flow diagrams

Diagrams can be used to show how energy is transferred from one store to another. Two examples are the transfer diagram and the Sankey diagram.

Transfer diagrams

In transfer diagrams the boxes show the energy stores and the arrows show the energy transfers.

For example, a transfer diagram for a child at the top of a slide may be:

Energy transfer diagram of a child on a slide

Gravitational energy stored in the child at the top of the slide is transferred as mechanical work done to speed up and to do work against friction. The result of this is a shift of energy from gravitational potential energy to kinetic energy and internal energy (raising the temperature of the child and the slide).

Sankey diagrams

Sankey diagrams start off as one arrow that splits into two or more points. This shows how all of the energy in a system is transferred into different stores.

Sankey diagram of a child on a slide

Sankey diagrams are really useful when the amount of energy in each of the energy sources is known. The width of the arrow is drawn to scale to show the amount of energy.

Explanation:

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ℍ ꨄ︎

Answer:

(b) Pressure= Area\Force

Explanation:

(a) Pressure is the force acting perpendicularly on a unit area of the object.

(b) Pressure= Area\Force

​(c) Pressure on an area of 10 m^2

Force =  200 N

Pressure = 200\10 = 20Pa

(ii) Pressure of an area 5m^2

Force =  200 N

Pressure = 200\5 = 40Pa

If helpful, please mark as brainliest! =)

Answer:

glucose

Explanation:

convert starch to glucose

Answer:

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.

I hope it's helpful!

Answer:

b is the answer.. hope it helps

Explanation:

Both gravitational and electric forces decrease with the square of the distance between the objects, and both forces act along a line between them. In Coulomb's law, however, the magnitude and sign of the electric force are determined by the electric charge, rather than the mass, of an object.

Answer:

see below

Explanation:

B is the activation energy

A is the enthalpy change which is negative

C is the product of oxygen and ethanol which is carbon dioxide and water

hope this helps, please mark

Answer:

i guess u could pick "B" :)

Explanation:

Answer:

8 N force

Explanation:

12 N forward, 4 N backwards

12-4=8

Answer:

R = 400 ohms.

Explanation: Voltage of the battery, V = 40 V. Current in the unknown resistor I = 100mA. Let R is the resistance of the resistor. It can be calculated using Ohm's law it gives the relationship between the voltage, resistance and current.. R = V/I. R = 40 V/10-¹A. R = 400 Ohm's. So, the value of the resistance of the resistor is 400 Ohm's

Answer:

a) -113 N/C

b) -423.71 V

Explanation:

The Step by step explanation and solution has been attached in the attachment section.

Answer:

They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time.

Explanation:

Answer:

d

Explanation:

Answer:

Sound waves are translated into transverse waves to know the frequency, amplitude, wavelength etc of the waves.

Explanation:

They translate the sound waves to know the depth about that specific waves and translating it to transverse waves makes it easier.

Hope it helps :D

it would be..... C

sorry if I am wrong I tryed to think, At least I try!

Answer:

The answer is SYMBOL B.

Explanation:

The correct schematic is the one that shows three groups of long and short lines. A schematic with one long and one short (one group) would be a one cell; a schematic with a long, a short, a long, a short (two group), would be a two cell; and a schematic with a long, a short, a long, a short, a long and a short (three group), would be a three cell- hence why the answer is symbol B.

Answer:

Symbol B

Explanation:

I took the test :)

Answer:

V=22.5cm

Explanation:

Answer:

The bowling ball did not change size or shape- the only thing that changed was the amount of gravity that pulls on it. But the mass of the bowling ball would never change. A bowling ball with a mass of 12 pounds on earth will have the mass of 12 pounds on the moon! Mass is the amount of atoms that a space fills.

Explanation:

I hope this helps! :D

Answer:

Option C : a

Explanation:

Answer:

They repel from each other

Explanation:

Answer:

It is also observed that, magnets attract as well as repel. We can explain this dual nature of magnetic force by proposing that each magnet has two poles, north pole (N) and south pole (S). You will observe two things during the activities:

1) When two magnets are brought near each other, like poles repel; opposite poles attract.

2) When a magnet is brought near a piece of iron, the iron also gets attracted to the magnet, and it acquires the same ability to attract other pieces of iron.

Answer:

0.50 A

Explanation:

According to the formula, V = IR

9 = I×18

I = 9/18

I = 0.50

If the battery is a 9-volt battery and the resistance in the circuit is 18 ohm's then the current is flowing through the circuit would be 0.5 Ampere.

Resistance is the obstruction of electrons in an electrically conducting material.The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.

V=IR

Where V is the voltage
Where I is the current
Where R is the resistance used in the circuit

As for the given problem  if the battery is a 9-volt battery and the resistance in the circuit is 18 ohm

By using the ohms

V=IR

By substituting the respective value of voltage and resistance
Voltage is 9 volt in the resistance is 18 ohm

9V = 18*I

I= 0.5 Ampere

Thus, the current flowing through the 9 V battery and a 18 Ohm resistor is 0.5 Ampere.

Learn more about resistance from here 

brainly.com/question/14547003

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Answer:5.9 Seconds

Explanation: I just took the quiz

The sound of a clap of thunder take 5.9 seconds to travel 2 kilometers.

To determine the correct statement among all the options, we need to know about the relation between speed and time.

Thus, we can conclude that the sound of a clap of thunder take 5.9 seconds to travel 2 kilometers.

Learn more about sound speed here:

brainly.com/question/2142871

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Answer:

yes

Explanation:

there are other quantities that are dimensionless, but have a unit.

For example, radian is the unit for an angle. But it is dimensionless because it is defined to be the ratio of two lengths.,

a dimensionless quantity will always be independent of the base units — meter, second, kilograms, kelvin, candela, moles, ampere.

Other examples:

1. Mass fraction

2.Mole fraction

both have unit (kg/kg)

Answer:

A quantity that has dimensions must have units. Yes a quantity have units but still be dimensionless for example,unit of angle is radian ,but it is a dimensionless quantity. A dimensionless quantity may have unit. ... A unitless quantity never has a non-zero dimension.

I hope it's helpful!

Answer:

D. You would weigh the same on both planets because their masses

and the distance to their centers of gravity are the same.

Explanation:

The above statement is true due to the fact that, the weight and masses of the individual are same in direct comparison with the distance to their center of gravity. If the weight and masses are not same, then there would have been a significant difference between the two planet.

Answer:

B

Explanation:

The impulse experienced by an object is the force•time.