Acalorimeter is made of metal x and weighs 250g. it contains 200g of liquid l at a temperature of 28oc. a piece of metal x of mass 500g at a temperature t is put in the calorimeter and 5g of l is boiled off as vapour. if the temperature of the calorimeter and its content is 45oc, calculate t. take specific latent heat of vaporization of l at a boiling point of 105oc to be 2. 1 × 10^6 jkg^-1, the specific heat capacity of l as 4200 jkg^-1, the specific heat capacity of l as 4200 jkg^-1 k^-1 and the specific heat capacity of x as 420 jkg^-1 k^-1.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s