A volcano ejects a glowing chunk of lava straight up.
It travels 6.0 seconds before it stops and begins to fall back to earth.
Calculate the speed the lava had leaving the volcano.

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged.

When utilizing a transmission electron microscope, why is it necessary to stain the specimen with heavy metal salts?