PHYSICS HIGH SCHOOL

Which type of wave carries the most energy?a. low frequency, long wavelength
b. high frequency, short wavelength
c. low frequency, short wavelength
d. high frequency, long wavelength

Answers

Answer 1
Answer: B. 
Fun fact: gamma rays have the shortest wavelength and highest frequency in the EM Spectrum. Their high energy levels causes abnormalities in cell division (which is basically known as cancer). Xrays and UV does too so there are safety stuff that goes on with regards to those (like lead shielding for xray scans and sunscreen from UV rays). 
Answer 2
Answer:

Answer: B: High frequency, short wavelength

Explanation: Well, if its a higher frequency it carries more than a low frequency, and when its a short wavelength, it doesn't take up as much energy for it to move, so it makes it larger amounts of energy, hope this helps!

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At what stage of a reaction do atoms have the highest energy?a. reactant stage
b. product stage
c. transition state stage
d. The stage of highest energy depends on the atom.

Answers

The correct answer for the question that is being presented above is this one: "c. transition state stage." During the transition state stage, the reaction of the atoms have the highest energy. It is also during the formation of the activated complex in the middle of the experiment.

You have a very old service manifold and the high-pressure gauge on this service manifold set has a continuous scale, calibrated to read from 0 to 500 psig. TRUE or FALSE.

Answers

That statement is FALSE

the scale that calibrated to read from 0 to 500 is usually the standard used by the new kind of service

the older one usually only take up to 340

hope this helps

A 0.5 kg object, initially at rest, is pulled to the right along a frictionless horizontal surface by a constant horizontal force of 25 N for adistance of 0.5m.
a. What is the work done by the force?
b. What is the change in the kinetic energy of the block?
c. What is the speed of the block after the force is removed?
Help asap plz

Answers

Answer:

A.) 12.5 J

B.) 12.5 J

C.) 7.1 m/s

Explanation:

Given that a 0.5 kg object, initially at rest, is pulled to the right along a frictionless horizontal surface by a constant horizontal force of 25 N for a distance of 0.5m.

a. What is the work done by the force?

Work done = force × distance

Work done = 25 × 0.5

Work done = 12.5 J

b. What is the change in the kinetic energy of the block?

Work done = energy

Change in Kinetic energy = work done

Change in kinetic energy = 12.5 J

c. What is the speed of the block after the force is removed?

Kinetic energy = 1/2mV^2

12.5 = 1/2 × 0.5 × V^2

25 = 0.5V^2

V^2 = 25/0.5

V^2 = 50

V = 7.1 m/s

what will be temperature on the kelvin scale if the indicated temperature on the Fahrenheit scale is 200degree Fahrenheit

Answers

We can use    Kelvin = 5/9 (Fahrenheit - 32) + 273.15

K = 5/9(168) + 273.15

K = (93 and 1/3) + 273.15

K = 366.48  (rounded)
kelvin=366.38(approximately)

You go to another forest and measure the shadow of a tree as being 6 meters long. The shadow of your meterstick is 2 meters long. How tall is the tree?

Answers

Well, 6/n=3/1, so n=2.

The air you breathe is made of 21% oxygen and 78% nitrogen. The oxygen in air is the _____ and the nitrogen is the _____. solution, solute solute, solvent solvent, solution

Answers

solute, solvent.

Solute is what is dissolved in the solvent. Since there is less oxygen and more nitrogen, the oxygen is the solute and the nitrogen the solvent. Solution is not included in the answer because the air is the solution (the combination of the solutes and solvent).
None of the choices is correct.
Air is a mixture, NOT a solution.
There are no solvents or solutes in a mixture.
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