The only function of the pulleys in the diagram is to change the direction
of the force applied to raise the bricks.
<h3>What is a Pulley?</h3>
A pulley is a wheel which has a flexible rope on its rim and helps to
transmit energy and motion.
In the diagram given, we can see that the pulley is used to raise a mass of
block by three people. They pull the rope horizontally in order to raise the
block vertically. This means that it was used to change the direction of the
applied force.
Read more about Pulley here brainly.com/question/177456
Answer:
Explanation:
Small grains are negatively charged by the wind while big grains is positively charged and remains at the ground . This process creates an electric field due to the presence of oppositely charged particles.
When ever electric field exists it is directed from a positive charge to a negative charge so the here electric field is towards an upwards direction.
KE = 1/2mv^2
KE = 1/2(1000)(20^2)
KE = 2.0 * 10^5
or
KE = 200,000
hope this helps :)
Answer:
0.001067 Wb
Explanation:
Parameters given:
Magnetic field, B = 0.77 T
Angle, θ = 30º
Width = 0.4cm = 0.04m
Length = 0.4cm = 0.04m
Magnetic flux, Φ(B) is given as:
Φ(B) = B * A * cosθ
Where A is Area
Area = length * width = 0.04 * 0.04 = 0.0016 m²
Φ(B) = 0.77 * 0.0016 * cos30
Φ(B) = 0.00167 Wb
