Can a flashlight cause skin cancer

Identify two factors that determine the intensity of sound

Which of the following is equal to the boyant force of a rock placed in a beaker of water? A) volume of the displaced fluid B) weight of the displaced fluid C) volume of the rock D) weight of the rock

Which two biomes have little precipitation?

What is its speed when it is very far away from the earth?

Calculate the current in a circuit when the voltage of the circuit is 5 V and the circuit has a total resistance of 5 Ω.

Determine the total mechanical energy of a 250 g baseball if it has a velocity of 30 m/s when it leaves the pitcher's hand 1.2m above the ground.

When distances were carefully measured from Earth to globular clusters above and below the Milky Way plane (where our view of them is not obscured by interstellar dust and gas), their distribution was found to be

Imagine you transfer heat into a gas. This heat splits up in two different ways: Additional thermal energy making the gas hotter and "fuel" for the gas to do work. Let's suppose, 64% of the transferred heat transforms into thermal energy.

How much heat is absorbed by a 61g iron skillet when its temperature rises from 5oC to 29oC?

Explain the relationship between motion and frame of reference.