Answer:
Explanation:
The resistance of a wire is given by:
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
For the wire in this problem:
L = 7.0 m
r = d/2 = 0.07 cm = 0.0007 m, so the area is
Solving for R,
Magnetometers<span> are widely used for measuring the Earth's magnetic field and in geophysical surveys to detect magnetic anomalies of various types. </span>They<span> are also used in the military to detect submarines.</span>
Answer:
False
Explanation:
Anything that sits and does nothing will keep doing nothing until an outside force moves it.
B is the answer because a solid would not be able to hold its shape if it was able to move around
Answer:
Answered
Explanation:
impacts of the physics of matter on aviation operations.
Thrust, drag and lift.
Thrust:
It is the force developed by airplane engines that cause it to pull forward. With the help of huge propellers of course attached to the wings.
Drag:
It is the resistive force on the plane caused by the friction between air and plane. Its magnitude depends upon surface area, speed and viscosity of the air.
Lift:
The drag produced is utilized such that one of its component acts opposite to the weight. This causes the plane to take flight and stay in air. Lift can be deduced using Bernoulli's principle.
Bernoulli's principle is equivalent to law of conservation of energy. Meaning it tries to keep the energy of a system constant. In doing so, it produces low pressure zone above the wing. Which causes a net upward force, lift.
