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alekssr [168]
3 years ago
13

What is an electromagnetic wave?

Physics
1 answer:
satela [25.4K]3 years ago
6 0
I think it is B. Sorry if I’m wrong
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A boat moves with a speed of +2.5 m/s in a direction 25° north of east. If the mass of the boat is 15,000 kg, what is the moment
nadya68 [22]
Momentum - mass in motion
P=MV
P=(15,000 kg)(2.5 m/s)
P=37 500 kg x m/s to the north
Hope this helps
5 0
3 years ago
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 97 cm, which makes
Ivan

Answer:

f = 19,877 cm   and  P = 5D

Explanation:

This is a lens focal length exercise, which must be solved with the optical constructor equation

        1 / f = 1 / p + 1 / q

where f is the focal length, p is the distance to the object and q is the distance to the image.

In this case the object is placed p = 25 cm from the eye, to be able to see it clearly the image must be at q = 97 cm from the eye

let's calculate

        1 / f = 1/97 + 1/25

        1 / f = 0.05

        f = 19,877 cm

the power of a lens is defined by the inverse of the focal length in meters

         P = 1 / f

         P = 1 / 19,877 10-2

         P = 5D

5 0
3 years ago
Please help me this is important!
Mariulka [41]
145 Grams!
It asks for the “Total Mass” basically asking to add, If you add 20 to 125, you get 145! Correct me if im wrong
4 0
3 years ago
What can be contracted through contact with saliva?
m_a_m_a [10]
Tuberculosis mrsa are some things that are contracted by saliva where spores in the air from an infected person
sneezing as well
4 0
3 years ago
Hat is the approximate pressure of air at sea level?
Tanya [424]
c) 101kPa

Hope I helped! ( Smiles )
5 0
4 years ago
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