Solve the following problems using appropriate equation: W = Fd, F = W/d and d = W/F
1) How much work is done when 80N force is applied on a desk to move it
horizontally through 12m? I

What is magnetic flux? explain faraday's law of induction.

What are igneous intrusions and extrusions

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.