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2 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics

2 answers:

GarryVolchara [31]2 years ago

3 0

I'm in physics, but I think the answer is 22. The angle of reflection is reflecting whatever the angle was so, in this case, it must be 22

const2013 [10]2 years ago

3 0

Answer:The angle reflection will be 22 degrees.

Explanation:

Reflection: The bouncing back of light rays from the shiny surface is termed as reflection.

Laws of reflection:

Incident ray , reflected ray and normal drawn perpendicularly to the surface of the shiny surface all lie in the same plane.
Angle of incidence is equal to the angle of reflection.

So, if the angle of an incidence is 22 degrees than the angle of reflection will also be the same as 22 degrees.

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Norway, Sweden, and Finland (Scandinavia) have what kind of climates??

Romashka [77]

They have a mild climate.

3 0

3 years ago

Read 2 more answers

If the intensity level by 15 identical engines in a garage is 100 dB, what is the intensity level generated by each one of these

insens350 [35]

To develop this problem it is necessary to apply the concepts related to Sound Intensity.

By definition the intensity is given by the equation

$\beta = 10Log(\frac{I}{I_0})$

Where,

I = Intensity of Sound

$I_0$ = Intensity of Reference

At this case we have that 15 engines produces 15 times the reference intensity, that is

$I= 15I_0$

And the total mutual intensity is 100 dB, so we should

$\beta = 100-10*log(\frac{15I_0}{I_0})$

$\beta = 100-10*log(15)$

$\beta = 100-11.76$

$\beta = 88.23dB$

Therefore each one of these engines produce D. 88dB.

5 0

3 years ago

HELP ASAP!!!! WILL GIVE BRAINLIEST!

Pani-rosa [81]

Answer:

Vacculoes, vesicles

Explanation:

Organelles and other structures within the cells have vesicles collectively referred to as the endo-membrane system. The Lysosomes pack up the substances, and the vesicles go through the porsous membrame and secrete the substances.

6 0

2 years ago

A man is crossing a river of width 100 m on a motorboat. The velocity of the motor boat is 4 m/s eastward and the velocity of th

Airida [17]

By the Pythagorean theorem we get $3^2+4^2=5^2$ . Thus the resultant velocity will be 5 m/s.

However there is a typo in the choices. It should take 25 seconds to cross the river, not 20 seconds, since the boat actually travels 125 meters due to the water current, and 125/5 = 25 seconds.

Alternatively you can calculate the eastward component of travel and get 100 / 4 = 25 seconds.

5 0

2 years ago

Need help on physics/momentum

koban [17]

Answer:

vf=11.67m/s

Explanation:

vf:

Δp=m(vf-vi)

80=12(vf-5)

80=12vf-60

140=12vf

vf=11.67m/s

pf:

p=m*v

p=12*11.67

p=140.04 N*s

Hope this helps

5 0

3 years ago