Answer:
5.9 x 10⁻⁷m
Explanation:
Given parameters:
Frequency = 5.085 x 10¹⁴Hz
Speed of light = 3.0 x 10⁸m/s
Unknown:
Wavelength of the orange light = ?
Solution:
The wavelength can be derived using the expression below;
wavelength = 
v is the speed of light
f is the frequency
wavelength = 
= 5.9 x 10⁻⁷m
<span>The oven will transform electrical energy into heat energy</span>
Answer:
h = 0.1 m = 10 cm
u = 0.2 m = 20 cm
v = 0.06 m = 6 cm
m = h'/h = v/u
h'/10 = 6/20
h' = 60/20 = 3 cm
Therefore image height = 3 cm(0.03 m)
Hope this helps!
Answer:
P = 251, 3 W
Explanation:
The intensity is defined as the power emitted per unit area
I = P / A
Since sound is distributed in all directions spherical shape, the area of a sphere is
A = 4π r²
let's clear the power and replace
P = I A
P = I (4π r²)
let's calculate
P = 5.00 (4π 2²)
P = 251, 3 W
