Does electromagnetic waves move faster than mechanical

Ответ:

hogwartsalicia

20.10.2021

Physics

$2.33\ m/s^2$

Explanation:

Net Force

According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:

Fn = m.a

Where a is the acceleration of the object. The net force is the sum of the individual vector forces applied to the object.

The m=1500 Kg car has two horizontal forces applied: the forward force of 5000 N that causes the movement and the air resistance force of 1250 N that opposes motion.

The net force is Fn = 5000 N - 1500 N = 3500 N

To find the acceleration, we solve the equation for a:

$\displaystyle a=\frac{Fn}{m}$

$\displaystyle a=\frac{3500}{1500}$

$\boxed{a = 2.33\ m/s^2}$

The car's acceleration is $a = 2.33\ m/s^2$

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Does electromagnetic waves move faster than mechanical waves?

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