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arlik [135]
3 years ago
9

Write a short story (about three paragraphs) in which you use the principles of light ray reflection. Your story should include

the words "incident ray," "reflected ray," "angle of incident," and "angle of reflection." Your story could be about solving a mystery, spying by using light ray reflection, or anything else you like related to light ray reflection.
Physics
1 answer:
Ivan3 years ago
3 0
If you take mirrors, and set them up at precise locations and angles, you can see everywhere by looking in the starting mirror. It is AMAZING!
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: A honeybucket man is carrying his load. He has a pole 2 m long with a bucket hanging from each end. The buckets have a mass of
nasty-shy [4]

Answer:

Explanation:

Using the principle of moment, assuming the rod is uniform rod of mass 1 kg

the center of mass of the rod will be at 1 m

assuming the system is in equilibrium,

clockwise moment = anticlockwise moment

let the distance of the man shoulder be x from the center of gravity and also is the pivot point

total mass of bucket + mass of honey = 2kg + 3 kg =  5 kg for rear bucket and

2kg + 5 kg = 7 kg for front bucket

( 5kg × ( 1+x)) + ( 1 kg × x) = 7 kg × ( 1 - x)

5 + 5 x + x = 7 - 7x

5 + 6x = 7 - 7x

6x + 7x = 7 - 5

13x = 2

x = 2 / 13 = 0.154 m

the honeybucket man's shoulder is 0.154 m from the center of the pole ( forward ).    

8 0
3 years ago
Check the dimensional consistencies of s =vot+1/2at2​
Leni [432]

Answer:

s is distance so it's dimensions become L.

Nd other side we have ut+1\2at^2.

as 1\2 is a constant it will have dimensions and apply the dimensions to other quantities.

on solving u will get L there also i,e ur LHS = RHS.

thus the equation is dimensionally consistent.

Explanation:

3 0
3 years ago
30. How do you make a conclusion?
FromTheMoon [43]
B. You compare the data
6 0
2 years ago
A Roller Derby Exhibition recently came to town. They packed the gym for two
arlik [135]

Answer:

14.36m/s

Explanation:

From the law of conservation of linear momentum

m1u1 + m2u2 = v(m1 + m2)

68×17 + 76×12= v(68+76)

1156+912 = 144v

2068 = 144v

v = 2068/144

=14.36 m/s

7 0
3 years ago
Which of the following is a vector quantity (a)mass (b)speed (c)time (d)acceleration
rusak2 [61]

(d) Acceleration is a vector quantity

5 0
3 years ago
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