Answer:
higher, lower, external work, 100 %, work.
Explanation:
These paragraphs refer to the second law of thermodynamics. There are two statements for the second law of thermodynamics. They are as follows:
KELVIN STATEMENT:
All the heat from a source can never be transferred to the sink without the rejection of some heat.
CLAUSIUS STATEMENT:
Heat can not be transferred from a colder body to a hotter body without the application of som external work.
According to the statements the blanks can be filled as follows:
Heat naturally flows from an object that has a <u>higher</u> temperature to an object that has a <u>Lower</u> temperature. Heat can be made to flow in the reverse direction if <u>external work</u> is done. A machine can never have an efficiency of <u>100 %</u>. This means that heat energy can never be fully converted into <u>work</u> energy.
Answer:
South of West
Explanation:
We can assume that the cruising speed relative to the air is the same relative to the ground due west.
because the wind will exert a velocity due north, we have to modify our direction in order to avoid that velocity (Vw).
The angle is given by:
from the west, that is [tex]7.81^o[\tex] South of West
0.0003321 Newtons
Explanation
We are given the charge, its velocity, and the magnetic field strength and direction. We can thus use the equation to find the force
so
Step 1
Let
now, replace
so, the answer is
0.0003321 Newtons
I hope this helps you
Answer:
<em>To raise the mass to an altitude of 12,000 Km 2E joules are required.</em>
Explanation:
<u>Gravitational Potential Energy</u>
It's the energy stored in an object because of its vertical position or height in a gravitational field.
It can be calculated with the equation:
U=m.g.h
Where:
m = mass of the object
h = height with respect to a fixed reference
g = acceleration of gravity, or .
If a mass has a height h1, its potential energy is
If a mass has a height h2, its potential energy is
The ratio of both potential energies is:
Simplifying:
Solving for U2:
Since U1=E:
To raise the mass to an altitude of 12,000 Km 2E joules are required.