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solniwko [45]
2 years ago
10

Which is an electromagnetic wave A. The waves that heat a cup of water in a microwave oven B. A flag waving in the wind C. Turni

ng on a flashlight D.The changes in the air that result from blowing a horn
Physics
1 answer:
viva [34]2 years ago
7 0

Answer:

The answer would be A. The waves that heat a cup of water in a microwave oven

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The distance from Abdullah's house to his school is 2.4km. Abdulla takes 0.6h to go to school on his cycle but takes only 0.4h t
vladimir1956 [14]

Answer:

The average speed can be calculated as the quotient between the distance travelled and the time needed to travel that distance.

To go to the school, he travels 2.4 km in 0.6 hours, then here the average speed is:

s = (2.4km)/(0.6 hours) = 4 km/h

To return to his home, he travels 2.4km again, this time in only 0.4 hours, then here the average speed is:

s' = (2.4 km)/(0.4 hours) = 6 km/h.

Now, if we want the total average speed (of going and returning) we have that the total distance traveled is two times the distance between his home and school, and the total time is 0.6 hours plus 0.4 hours, then the average speed is:

S = (2*2.4 km)/(0.6 hours + 0.4 hours)

S = (4.8km)/(1 h) = 4.8 km/h

5 0
2 years ago
If an equation is dimensionally correct is thar equation a right equation<br>​
Nady [450]

If an equation is dimensionally correct, it does not mean that the equation must be true. On the other hand, when the equation is dimensionally correct, the equation cannot be true. Dimensional analysis is a technique used to check whether a relationship is correct

8 0
3 years ago
Generation of electricity in coal-burning power plants and nuclear power plants both involve _______.
kolbaska11 [484]

Answer:

Heating water to produce steam which drives a turbine

Explanation:

Generation of electricity in coal-burning power plants and nuclear power plants both involve heating water to produce steam which drives a turbine.

5 0
3 years ago
Medicine A is an effective treatment for the common cold a study was conducted to test the effectiveness of medicine A which que
Xelga [282]
According to my research I found questions with the same info with option choices and they are:

A.) How many people in the study had the flu?
 B.)  How many people were included in the study?
 C.) What was the average age of the people in the study?
 D.)  What was the most common occupation of people in the study?

Among those options the answer would be the second choice B)
8 0
3 years ago
Read 2 more answers
John is a field researcher who studies social interaction within motorcycle groups. He is not an accomplished rider himself, but
uysha [10]
His role as a field research is that of a: Complete participant!
(Option D.)

~Good luck!
7 0
3 years ago
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