PHYSICS HIGH SCHOOL

What is personification?A. human traits attributed to objects
B. vivid language that paints a picture
C. a direct comparison between two things
D. an extreme exaggeration or overstatement

Answers

Answer 1
Answer: the answer is A because B is not right. C is incorrect and D well that doesn't makes since in it. the definition is the attribution of human nature or character inanimate, animals, object or abstract notation, especially as a rhetorical figure.
Answer 2
Answer: A. Think of it as person-ification. Such as "The flame of the candle DANCED in the dark" Now I don't know about you, but I've never seen a candle or a flame dance before!

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You can only see stars whose peak intensity of radiation is in the visible band. True False
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How small are the wavelengths of gamma ray radiation? A. smaller than an atom B. about the size of a golf ball C. about 10 times the size of an atom D. about the size of earth **:( thank you!!
The heat capacity of an object depends in part on its _____. A. mass B. enthalpy C. shape D. potential energy

Which of these follows from Newton's laws about the energy of a moving object? A)The total mechanical energy of an object is always constant. B)The kinetic energy of an object remains the same if friction is absent. C)The mechanical energy remains the same if there are only conservative forces acting. D)The total of all forms of energy is always constant.

Answers

The correct answer for the question that is being presented above is this one: "C)The mechanical energy remains the same if there are only conservative forces acting." The statement that shows that Newton's laws about the energy of a moving object is that the mechanical energy remains the same if there are only conservative forces acting.

The more particles a substance has at a given temperature, the more thermal energy it has. Please select the best answer from the choices provideda. True
b. False

Answers

this is true because The mass of the warm balloon is the same as the mass in the cold balloon. In the warm balloon, the gas molecules are free of each other and moving rapidly because of all the energy they have. They collide with each other and with the wall of the balloon exerting pressure, which gives the balloon its size (volume). As the balloon cools in the cooler (freezer), the air molecules transfer energy to the surrounding cooler (freezer). The molecules of air are still free of each other but they do not move as rapidly or as far apart and their collisions with the balloon walls are not as forceful. As a result the volume of the balloon containing the cool air decreases. Heat and cool only speed up or slow down the motion of the molecules. When the balloon was heated with the flame the molecules where moving so much that they transferred their heat and energy to the balloon walls causing it to pop.

Answer:

true

Explanation:

i think it is?

Which pulley setup would decrease the amount of effort force needed to lift an objectA) two fixed position pulleys attached to a fixed point above the object that's being lifted

B) one fixed position pulley attached to a fixed point above the object that is being lifted

C) no pulleys just a string attached to an object that is being lifted

D) one moving pulley attached to the object that is being lifted

Answers

Answer;

D) one moving pulley attached to the object that is being lifted

Explanation;

-Pulleys are powerful simple machines. They can change the direction of a force, which can make it much easier for us to move something.

-A fixed pulley consists of a wheel fixed to a shaft and is used in conjunction with a belt to transfer energy to another fixed pulley. A movable pulley consists of a shell, a movable wheel and a rope. Movable pulleys are also know as block and tackle.

-One moving pulley attached to the object that is being lifted decreases the amount of effort force needed to lift an object.
D) one moving pulley attached to the object that is being lifted

If a plane can travel 450 miles per hour with the wind and 410 miles per hour against the wind, find the speed of the plane without a wind and speed of the wind. I need help with this one :(

Answers

The speed of the plane without a wind is 430 miles/hr and speed of the wind is 20 miles/hr.

What is Speed ?

Speed is a rate of change of distance with respect to time. i.e. v=dx÷dt. Speed can also be defined as distance over time

i.e. speed= distance ÷ time

it is denoted by v and its SI unit is m/s. it is a scalar quantity.

Speed shows how much distance can be traveled in unit time.

To find dimension for speed is, from formula

Speed = Distance ÷ Time

Dimension for distance is [L¹] ,

Dimension for Time is [T¹],

Dividing dimension of distance by dimension of time gives,

{L¹] ÷ [T¹] = [L¹T⁻¹]

Dimension for speed is [L¹T⁻¹].

Consider,

Speed of the plane = v

Speed of the wind = u

Speed of the wind in the direction of wind is,

v + u = 450 miles/hr.....1

Speed of the wind in the opposite direction of wind is,

v - u = 410 miles/hr.....2

Adding equation 1 and 2

2v = 860

v = 430 miles/hr

Subtracting equation 1 and 2

2u = 40

u = 20 miles/hr

Hence the speed of the plane without a wind is 430 miles/hr and speed of the wind is 20 miles/hr.

To know more about Speed :

brainly.com/question/28224010

#SPJ2.


the plane is 430 and the wind it 20miles

What effect did the Cold War have on the American space program?A. High levels of military spending deterred scientific research.
B. The need for nuclear weapons led to less sophisticated rocket technology.
C. American and Soviet scientific cooperation lessened political tension.
D. Competition with the Soviet Union spurred American space missions

Answers

The answer is D.Competition with the Soviet Union spurred American space missions.

♡♡Hope I helped!!! :)♡♡

Competition with the Soviet Union spurred American space missions.

What gives the gem amethyst its purplish color

Answers

Amethyst is a crystalline quartz, its colours range from light to dark purple. The purplish colour of amethyst is due to high energy radiations, such as gamma rays, from radioactive sources, the presence of trace elements and the presence of iron found in its crystal lattice. The colour cetre created by Fe4+ is a principal contributor to the colouring of amethyst.

The gem amethyst gets its purplish color from trace amounts of iron and aluminum within its crystal lattice structure. Amethyst is a variety of quartz, which is a silicon dioxide mineral. The coloration occurs due to the presence of impurities or color centers that interact with light, absorbing certain wavelengths and transmitting others.

In the case of amethyst, the purple color is primarily attributed to the presence of iron impurities (Fe3+) within the crystal lattice of quartz. The iron impurities absorb certain wavelengths of light in the visible spectrum, particularly in the green and yellow regions, leaving behind the purplish hues to be transmitted to our eyes.

The exact shade of purple can vary in amethyst gemstones, ranging from light lilac to deep violet, depending on the concentration of iron impurities and other factors during their formation. Heat treatment or exposure to radiation can also influence the color of amethyst, but the natural variety gets its beauty from the fascinating interplay of these impurities within the crystal structure.
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