Answer:
Explanation:
P = Power Output = 1000 W
r = Radius = 35000000 m
= Permittivity of free space =
c = Speed of light =
Intensity of Electric radiation
Intensity of Electric radiation
The amplitude of the electric field vector is
Kevin is standing outside a railway station. He can know whether a train is approaching the station or departing from the sound
1 answer:
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Answer:
Explanation:
The star is revolving the black hole like earth revolves around the sun .so time period of rotation T is given by the following relation
T² = , R is distance between black hole and star , M is mass of black hole
Given T = 4.8 hours
4.8² =
Using the same equation for earth sun system
24² = , Ms is mass of the sun and 50R is distance between the sun and the earth .
Dividing the equation
=
= 2x 10⁻⁴
Answer: It leads to a front. A front is.., I don't know how to explain it, so I'll add a picture. Fronts are made out of clouds and usually bring rain. So the answer is C: The formation of clouds and rain.
Explanation:
Answer:
a) System aceleration:
b) Direction of movement:
The block down the plane when the acceleration is negative. This occur when:
The block up the plane when the acceleration is positive. This occur when:
Explanation:
For the block the move direction is parallel (||) to the plane
(1)
For the block the move direction is vertical (y)
(2)
Both blocks are connected with the same cable, therefore, the tension on the cable and the acceleration is the same for both.
Solving the equation 2 for T:
(3)
replacing (3) in the equation (1)
(4)
solving (4) for a:
