A baseball is thrown 27.43 m from first base to second base appears to reach a maximum height of 5.02 m find the initial velocity of the ball

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

What are similarities and differences of reflection, refraction, diffraction and absorption?