PHYSICS HIGH SCHOOL

White light breaks up into different colors when it passes through a prism because ofA. Differences in wave speed
B. Total internal dispersion
C. A combination of refraction and reflection
D. Droplets in the air

Answers

Answer 1
Answer: I thank the answer is a

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A pole that is 2.9m tall casts a shadow that is 1.32m long. at the same time, a nearby tower casts a shadow that is 37.75m long. how tall is the tower? round your answer to the nearest meter.

Answers

(2.9)/(1.32)   = (x)/(37.75)

x = 82.93 m

Nothing to deal with physics.
Maths. Scale factor. Year 9.

A mineral sample has a mass of 4.2 grams and a volume of 2 milliliters. What is the density of the mineral

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what value does the 4 represent in the number 487.009

When looking at human motives the following theorist developed a hierarchy of five needs that range from basic physiological needs to groeth or meta-needs

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The theorist you are talking about is none other than Abraham Maslow. He developed the Maslow's hierarchy of needs wherein basic human needs range from the physiological, security, and love and belongingness needs to the esteem and self-actualization of the individual. 
Abraham Maslow proposed Maslow's Hierarchy of Needs in 1943. His paper, "A Theory of Human Motivation" presented the idea that the most basic needs such as food were at the base of the hierarchy and must therefor be met before the higher levels of needs such as safety, love, esteem, and self-actualization.

What formula can be used to calculate [H30+]?

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[H3O+] is just the same with [H+]. There are quite a few relationships between [H+] and [OH−] ions. And because there is a large range of number between 10 to 10-15 M, the pH is used. pH = -log[H+] and pOH = -log[OH−]. In aqueous solutions, [H+ ][OH- ] = 10-14. 

Why was the idea of plate tectonics difficult for many scientists to accept for many years after it was first introduced?SCIENCE QUESTION

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It's kind of funny really. The guy who invented the idea in the first place had actually been made fun of because the thought of that happening was improbable in their mind. Also, Wegener ( the guy who invented the idea) was not even a geologist but a meteorologist. But later it had been backed up due to earthquakes being record consecutively in one area, and the graphs turning out differently.

A 1200 w microwave oven transforms 1.8x10(to the power of 5) J of energy while reheating some food. Calculate how long the food was in the microwave, in mins!? (Please show steps, thanks)

Answers


1200 watts = 1200 joules per second

(1.8 x 10⁵ joules) / (1,200 joules/sec) = 150 sec = 2.5 minutes


 
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