1. Casey throws a stone horizontally at 20 m/s from a top of a cliff that is 40 m high, how long (t) will it take the stone to strike the ground? * 25 points 9.81 m/s^2 2.01 sec 2.85 sec 2.03 sec

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?

What is the major limitation to the light microscope?

Why is no-till farming more sustainable than many traditional methods of farming