A father lifts a toddler 15 m up in the air. The child gains 187,5 J of energy in her gravitational potential energy
store as a result What is the mass of the toddler? Give your answer to 1 decimal place. (Assume that the
gravitational field strength is 10 N/kg)

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.