What is the inertial mass of a bus that accelerates at a rate of 0.5m/s/s when 5 people push it, each with a force of 750N.

How can you increase the strength of an electromagnet?

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

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?