How is radioactivity produced

U need to cut down 3 trees to get about 5 kilograms of bark. About how many trees u have to cut down each year to make enough paclitaxel for 60,000 patients

g 'A fire hose ejects a stream of water at an angle of 31.6o above the horizontal. The water leaves the nozzle with a speed of 29.3 m/s.

A 12-V battery is connected to a device and 24 mA (24 x 10' Amps) of current flows through it. If the device obeys Ohm's law, how much current will flow when a 24-V battery is used?

A cannon tilted up at a 30 angle fires a cannon ball at 80 m/s from atop a 10-m-high fortress wall. what is the ball's impact speed on the ground below?

The glow emitted by a substance exposed to external radiation is called

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