How are ground-level ozone and smog related

A beam of light has a wavelength of 4.5 * 10^-7 meter in a vacuum. The frequency of this light is (1) 1.5 * 10^-15 Hz (3) 1.4 * 10^2 Hz (2) 4.5 * 10^-7 Hz (4) 6.7 * 10^14 Hz

How do the frequency and period of a wave relate together

How many neutrons does element x have if it's atomic number is 34 and it's mass number is 76

A student measured the density of gold to be 18.5g/cm3. the accepted value of the density of gold is 19.3g/cm3. what is the percent error of the students measurement

A boy pushes a box with a horizontal force across a rough surface. He then changes the direction of his force to be diagonal into the ground. He pushes with the same force as before.

What does it mean when a plane is perpendicular to the x-axis?

If the weight of an object that is submerged in a fluid is 10 N and the buoyant force on it is 20 N, what will happen to the object?|

A switch in an electric circuit controls the flow of electrons in the circuit. True O False

What are three common forms of work in science

A boat travels north across a river at a velocity of 22 meters/second with respect to the water. The river's velocity is 2.2 meters/second to the east. What is the resultant velocity of the boat, as measured from the land?