Answer:
False
Explanation:
Tycho Brahe, who was a Dutch Astronomer of 16th Century AD, did not conclude the Earth revolves around the Sun which was the Heliocentric Model as stated by Copernicus. Tycho proposed a Geo-Heliocentric model in which the Sun and the Moon used to revolve around the Earth but other planets used to revolve around the Sun.
He also believed that the Heliocentric model was in violation with the Holy Scriptures.
Fitness assessment can help us to improve our fitness simply by setting goals to improve their healthy fitness
However, fitness testing is an effective strategy to monitor and assess our fitness levels in general as it helps us to understand how healthy they are by learning about the five components of fitness .
<h3>What is physical fitness?</h3>
This simply refers to a state of an individual being physically healthy.
In order words, it is a condition of being physically fit and healthy.
So therefore, fitness assessment can help you to improve our fitness simply by setting goals to improve their health-related fitness
Learn more about fitness:
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Answer:
Explanation:
Given that:
The conductivity of the material
= 5.0 s/m
; &
The electric field intensity of the material E = 250 sin(10¹⁰ t) V/m
(a) The conduction current density 


(b) Displacement current density 
Recall that:

∴



(c) The frequency at which
will have the same magnitude is:

By substitution


f = 90 GHz
Answer:
Approximately
.
(Assuming that
.)
Explanation:
The mechanical energy of an object is the sum of its potential energy and its kinetic energy. It will be shown that the exact mass of this object doesn't matter. For ease of calculation, let
represent the mass of the book.
The initial potential energy of the book is
.
The book was initially at rest when it was released. Hence, its initial kinetic energy would be zero. Hence, the initial mechanical energy of the book-Earth system would be
.
When the book was about to hit the ground, its speed is
. Its kinetic energy would be:
.
The question implies that the potential energy of the book near the ground is zero. Hence, the mechanical energy of the system would be
when the book was about to hit the ground.
The amount of mechanical energy lost in this process would be equal to:
.
Divide that with the initial mechanical energy of the system to find the percentage change. Note how the mass of the book,
, was eliminated in this process.
.