A60kg bush walker is suffering from hypothermia, having an average body temperature of 33.5 degrees celsius. when rescued, she was wrapped in a blanket and given two 310ml cups of warm tea eat at a temperature of 60 degrees celsius. calculate the maximum rise in the bushwalker's body temperature due to the heat of the tea

(human body =3.5 x 10^3 j/kg/k)

note: the answer is 0.3 degrees celsius but i can't figure how to work the wuestion out

When an object is heated it contracts. a. true b. false

The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.