A toddler rolls off of his bed and hits the floor with a thud 0.53m below. If he lands 0.2m away from the base of the bed, how long did he fall for? t = ?
dy = ?
dx = ?
ax = ?
ay = ?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

What is the temperature in degrees celsius of a substance with a tempature of 49k

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.