If Bobby Joe is 13, his sister Billy Jean is 8 and his brother Clevis is 16, describe how old Bobby Joe is relative to his siblings without using numbers? HELP QUICK PLS HURRY

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.

Which component of the earth’s atmosphere is decreased due to photosynthesis?

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?