Which of the following statements are true regarding electromagnetic waves traveling through a vacuum? More than one statement may be correct.

(a) All waves have the same wavelength.
(b) All waves have the same frequency.
(c) All waves travel at 3.00 3 108 m/s.
(d) The electric and magnetic fields associated with the waves are perpendicular to each other and to the direction of wave propagation.
(e) The speed of the waves depends on their frequency.

option c and d.

Explanation:

Electromagnetic waves are those waves which do not need any material medium to transfer.

Speed of the electromagnetic waves is equal to 3 x 10⁸ m/s.

All electromagnetic wave have different frequency and wavelength.

Electromagnetic waves  is perpendicular to the direction of propagation.

Hence, the option which is true are option c and d.

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.