PHYSICS HIGH SCHOOL

In which state of matter is a substance unable to transfer heat by convection

Answers

Answer 1
Answer: Convection is the movement of molecules in a solution according to the kinetic energy imparted by heat energy. This happens in liquids, gases, and plasmas. It can't occur in solids simply because they are just that. Solids. If the solid is heated enough to break the cohesion then it will turn to a liquid. Hope this helped. :)

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A change that occurs when a solid melts or a liquid freezes is an example of a phase change.a. Trueb. False
A wave will "break" because ________. a wave will "break" because ________. the sediment load of water is greater near the shore of random molecular motion in wave forms the density of water increases closer to shore the bottom interferes with its oscillatory motion the wind increases its speed near shorelines
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A circular coil lies flat on a horizontal surface. A bar magnet is held fixed above the center of the coil with its north pole pointing downward. What is the direction of the induced current in the coil

Answers

Answer:

Explanation:

If the magnet is dropped from this position, then the direction of the induced current in the coil would be anticlockwise. Lenz's law allows us to predict the direction of the induced current in a circuit. It is also known as the Right hand rule. It states that the current that is being induced in a particular circuit is as a result of the change in the magnetic field in order to oppose the change in the magnetic flux and also to apply an mechanical force that is opposing the motion. Because of this, the current is pointed to the direction of  the pole, to oppose this the induced current should be directed anticlockwise.

Using echos to find an object

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Using echoes to find and object is called echo location.
The answer is Echolocation

Nuclear energy can be used to power _______.a. street lights
b. 4es
c. homes
d. all of the above

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Nuclear power plants produce radioactivewaste that must be stored properly. It is very impossible for a nuclear power plantto have no waste at all since lots of chemicals are used to create the processas it gives energy to other machines. Nuclear energy can be used to power allof the above choices. Radioactive waste can not be released into local watersupplies since the wastes are very radioactive and may cause mutation to thefishes and bioaccumulation which will affect humans as well. It will also causeair pollution if the chemicals are not stored properly.

Air entering the potential space of the pleural cavity is called

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Air  entering the  potential space of  the  pleural cavity is  called  pneumothorax. 

HELP ME PLEASEIn which prenatal stage is a fetus' genitalia clearly male or female?
A. zygote stage B. germinal stage C. embryonic stage D. fetal stage

Answers

In the fetal stage, the genitalia of a fetus is developed. Thus option D, the fetal stage is correct.

What is the prenatal stage?

The time period from the formation of the zygote to the parturition is called the prenatal stage and it is also known as the antenatal stage. In this stage, division and differentiation of the zygote take place to form an embryo, and then the development of the embryo to form a fetus.

The prenatal stage consists of 3 stages:

1) Germinal stage

2) Embryonic stage

3) Fetal stage

The time period of the first two weeks after conception is known as the germinal stage, from the third to eighth week is the embryonic stage, this stage begins after implantation, and from the ninth week to the parturition is the fetal stage. The genitalia of a fetus can be clearly differentiated by the twelfth week.

Therefore, option D, the fetal stage is correct.

Learn more about the prenatal stage, here:

brainly.com/question/6907460

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Answer:

D is the right answer

Explanation:

The light bulb in your room is not very bright. You want to use a concave mirror to direct its illumination into a tight, parallel beam of light for reading. The radius of curvature of the mirror is 30 centimeters. At what distance from the mirror should you place the light bulb to produce this parallel light beam

Answers

A point source is to be used with a concave mirror to produce a beam of parallel light. The source should be placed midway between the center of curvature and the mirror. To solve this question you have to draw a ray diagram. Apply the mirror equation to determine the image distance and finally make sure that the first two steps are consistent with each other.


I hope this helps, Regards.
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