If 1 hectare land area of 20 cm soil depth has a bulk density of 1.6 g/cm', what is the average mass of the soil in 1 hectare in kg?​

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds