What can electromagnetic waves travel through?

if the resistance of a car headlight is 15 ohm and the current through it is 0.60, what is the voltage across the headlight?

Which lists the correct steps that occur when using a diffraction grating to bend light? diffracted wavelengths reach the eyes → different wavelengths of light bend at different angles → the eyes see different colors → light strikes the grooves

What is the weight of a clown triggerfish?

A 2.00 m wave has a frequency of 686 Hz. What is the speed of the wave?

What conditions, common to most stars including our sun, appear to be necessary in order for fusion reactions to take place?

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?

What two qauntities must be known to calculate the density of a sample of matter

An element's atomic number is 38. How many protons would an atom of this element have?

What's are some forms of chemical energy