What unit is used to measure loudness and at what level can hearing loss happen?

Olga is given a pure substance that reflects light. she has a mallet and a heat source. she will know if she has a metal if she?

The Slowing Earth The Earth's rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2006 the Earth took about 0.840 longer to complete 365 revolutions than it did in the year 1906.

Nearly all conventional piston engines have flywheels on them to smooth out engine vibrations caused by the thrust of individual piston firings. Why does the flywheel have this effect

The primary organ of the digestive system that produces digestive enzymes is the:Small intestine Liver Gallbladder Pancreas

How can a cyclist minimize friction as he or she rides? A. by increasing the weight of the bike B. by increasing the trend on his or her tires C. by decreasing the air resistance D. by decreasing aerodynamic design

As a mercury atom absorbs a photon of energy, an electron in the atom changes from energy level d to energy level e. Determine the energy of the absorbed photon in electronvolts.

During an exothermic reaction, the energy given off comes from atoms being consumed mass being burned into energy the breaking and forming of bonds mass being created

Can electrostatic attract both pull and pull?

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball