Which experimental result led to the inference that atoms contained electrons? a. most alpha particles passed straight through a thing sheet of gold foil. b. th beam is a cathode ray tube was moved by an electric force. c. electrons were found to have higher energy the farther they are from the nucleus. d. a few alpha particles bounced off a thin sheet of gold foil.

What is a possible result of higher air temperature caused by global warming

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2