ANSWER ASAP PLEASE When it is very hot in his room, Stuart tries to make it cooler by opening both the top and the bottom of his window. Cooler air comes in the bottom and warm air goes out through the top. Heat energy was transferred by which of the following processes

Question 21 options:

radiation

convection

conduction

evaporation

Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.