Which electromagnetic wave has wavelengths just longer than visible light? a. infrared radiation b. ultraviolet radiation c. microwaves d. radio waves

A). Infrared Radiation

Explanation:

As we know that all electromagnetic waves can propagate without any medium by inducing each other

So here we know that all the electromagnetic waves when arrange in increasing order of energy then

1) Radio Waves

2) Microwaves

3) Infrared radiations

4) Visible light

5) Ultraviolet radiation

6) X rays

7) Gamma Rays

So we will say that wavelength just more than visible light must have energy just less than visible light

So as per above energy order correct answer will be

A). Infrared Radiations

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be