When heat is added to a material, its thermal energy increases its thermal energy increases
its temperature increases
its molecules move faster
all of the above

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.