How does recycling by humans affect the environment?

A) Less garbage will be produced, which leads to less pollution of the environment.
B) Less toxic wastes are produced, which increase the amount of fossil fuel needed.
C) More fossil fuels are used in factories, which increase the amount of toxic wastes
in the water.
D) More resources will be used, which destroy animal habitats and pollutes the air.

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?

Who was the first scientist to measure speed as distance over time?

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?