The most effective forces on the object are the backward force of air resistance relatively very small in magnitude, and the force of gravity. Because the spiral path of the satellite is not perpendicular to the gravitational force, one element of the gravitational force pulls forward. at the satellite to do fantastic work & make its speed increase.
<h3>What is called gravitational force?</h3>
Gravity, additionally referred to as gravitation, is a force that exists amongst all material gadgets withinside the universe. For any objects or particles having nonzero mass, the force of gravity tends to draw them in the direction of each other. Gravity operates on objects of all sizes, from subatomic particles to clusters of galaxies.
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Answer:
- z direction
Explanation:
To find the direction of the magnetic field, you take into account that the magnetic force over a charge, is given by the following cross product:
(1)
F_B: magnetic force
q: charge of the particle
v: velocity of the charge
B: magnetic field
In this case you have that the electron is moving along x-axis. You can consider this direction as the ^i direction. The electron experiences a magnetic deflection in the -y direction, that is, in the -^j direction.
By the cross products between unit vectors, you have that:
-^j = ^i X ^k
That is, the cross product between two vectors, one in the +x direction, and another one in the +z direction, generates a vector in the -y direction. However, it is necessary to take into account that the negative charge of the electron change the sign of the result of the cross product, which demands that the second vector is in the -z direction. That is:
-^i X -k^ = ^i X ^k = - ^j
Hence, the direction of the magnetic field is in the -z direction
F = ma
m = F/a
m = 20N / 5m/s^2
m = 4kg
Option C. Weight, Friction are the vertical forces that act on the leaf falling.
<h3>What are vertical forces?</h3>
These are forces that act in the vertical plane, which is perpendicular to the ground. There are at least two vertical forces acting. Gravitational force is provided by the earth and always acts downwards.
The weight, W (force) acting on the leaf is as a result of the product of the mass(m) of the leaf and the acceleration due to gravity (g).
Mathematically; W = mg
Friction in the form of air resistance also try to stop or reduce this acceleration due to gravity (g) on the falling leaf and it acts upwards.
In conclusion, Weight and Friction (air resistance) are the two vertical forces acting on a falling leaf.
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They connect with each other in the phosphate.
Hope this helped, have a great day! :D