A heavy frog and a light frog jump straight up into the air. They push off in such away that theyboth have the same kinetic energy just as they leave the ground. Air resistance is negligible. Whichof the following statements about these frogs are correct? A)The heavier frog goes higher than the lighter frog. B)The lighter frog goes higher than the heavier frog. C) They both leave the ground with the same speed. D) Just as they leave the ground, the heavier frog is moving faster than the lighter frog. E)Just as they leave the ground, the lighter frog is moving faster than the heavier frog. F) Both frogs reach the same maximum height.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

where is the photo and the answer choices?

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

there are no contact forces mentioned on the list of choices that you've provided.