Answer:
Opposite charges attract each other.
Answer:
Refer to the attachment!~
Answer:
#_photon = 7 10²¹ photons
Explanation:
Let's look for the power that affects the panel of area of 1.5 m2
I = P / A
P = I A
P = 1.37 10³ 1.5
P = 2,055 10³ W
P = E / t
If we use t = 1 s
E = P t
E = 2,055 10³ J
This is the power that the panel receives, let's look for the energy of a photon
E = h f
c = λ f
f = c /λ
E = h c /λ
Let's calculate
E₀ = 6.63 10⁻³⁴ 3 10⁸/680 10⁻⁹
E₀ = 2.925 10⁻¹⁹ J
In one second the total energy is the number of photons for the energy of each one
E = #_photon E₀
#_photon = E / E₀
#_photon = 2,055 10³ / 2,925 10⁻¹⁹
#_photon = 7 10²¹ photons
Answer:
40 cm behind the lens
Explanation:
Please refer to the attached picture for the ray tracing, where
f is the focal length
p is the location of the object
q is the location of the image
Each tick in the picture corresponds to 20 cm, so we can observe that
p = 40 cm
f = 20 cm
q = 40 cm
Also, q is inverted, real and same size as the object.
The location of the image, q, can also be verified by using the lens equation:
Answer:
B. Field
Explanation:
Gravity and Magnetism are defined as non-contact forces, so that eliminates option A.
Tension is found in a rope or a spring, and is a force in itself, so that eliminates option B.
A normal force is one that is perpendicular to the direction of a slope, so that eliminates option D.
