The direction of the magnetic force is to the right.
<h3>What is the magnetic field?</h3>
The magnetic field is the region in space where the influence of the magnet is felt. The magnetic force is always in the direction of the magnetic field.
We can see from the image, that the direction of the magnetic force is to the right.
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Answer:
b. The speed of light is 2.99792458 x 10^8 meters/second.
Explanation:
Speed of light is a universal constant and its value is same throughout the universe . So alien living near Alpha Centauri will quickly understand about it . But other statements are not universal . Mass of electron can vary as per relativistic formula of Einstein . Similarly , mass of proton can also vary according to relativistic concept . It depends upon the velocity of particle . So, the ratio of mass of proton and mass of electron will also vary from one star to another .
The direction of force, when electric current and magnetic field direction given is at 90° to the plane containing current I and Magnetic field B.
<h3>What is magnetic force?</h3>
The force of attraction or repulsion experienced by a magnetic material when it enters the magnetic field.
When a wire with an electric current I is placed in a magnetic field of strength B it experiences a magnetic force F.
According to the Fleming's right hand rule, the direction can be determined by knowing any two parameter's direction.
Thus, The direction of force is at 90° to the plane containing current I and Magnetic field B.
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Answer:
<em>K =400000 J</em>
Explanation:
<u>Kinetic Energy</u>
Is the energy an object has due to its state of motion. It's proportional to the square of the speed.
The equation for the kinetic energy is:

Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
The car has a mass of m=2000 Kg and travels at v=20 m/s. Calculating the kinetic energy:

Calculating:
K =400000 J
Almost true but not quite.
That would give you the negative of the actual acceleration.
It should be the other way around:
(final v) minus (initial v), then divide by time.