Abox is being pushed along a horizontal surface. which answer lists the four main forces involved? a. compression, normal, friction, weight b. compression, tension, friction, weight c. compression, normal, tension, weight d. compression, normal, friction, tension

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor

Contains chemical energy. a. heat b. light c. natural gas