Tara's cell phone plan costs $39.00 a month, which includes 100 text messages. After she uses all of her text messages, it will
1 answer:
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Answer:
Explanation:
Given data:
Mass of the paper clip,
Kinetic energy,
Let the velocity of the paper clip when it is thrown be <em>v</em>.
Thus,
(rounding to nearest tenth)
Answer: f=150cm in water and f=60cm in air.
Explanation: Focal length is a measurement of how strong light is converged or diverged by a system. To find the variable, it can be used the formula:
= (nglass - ni)(
-
).
nglass is the index of refraction of the glass;
ni is the index of refraction of the medium you want, water in this case;
R1 is the curvature through which light enters the lens;
R2 is the curvature of the surface which it exits the lens;
Substituting and calculating for water (nwater = 1.3):
= (1.5 - 1.3)(
-
)
= 0.2(
)
f = = 150
For air (nair = 1):
= (1.5 - 1)(
-
)
f = = 60
In water, the focal length of the lens is f = 150cm.
In air, f = 60cm.
Answer:
The value is
Explanation:
From the question we are told that
The amount of power delivered is
The time taken is
The wavelength is
Generally the energy delivered is mathematically represented as
Where is the Planck's constant with value
c is the speed of light with value
So
=>