On a sunny summer day, the intensity of sunlight at the earth's surface is about 1000 w/m2. what are the peak electric and magnetic fields in this sunlight?

peak value of magnetic field is

peak value of electric field is

Explanation:

As we know that the intensity of electromagnetic waves is given by the formula

here we have

now we have

now peak value of electric field is given as

So the peak value of electric field is given as

Now we have relation between electric field and magnetic field as

the bal will not change its velocity.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.