.A 1.0 kg ball falls from rest a distance of 19.6 m. - What was its change in potential energy?
- What was its velocity after falling 19.6 m?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

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?

Which articulations allow for greatest range of motion?