An unknown metal alloy with a mass of 390 g is taken from boiling water and dropped into an insulated cup that contains 553 g of water at an initial temperature of 18.7°c. the final temperature of the system is 26.8°c. what is the metal's specific heat capacity?

so specific heat capacity of unknown metal is 656.8 J/degree C kg

Explanation:

Here by energy balance we can say that energy given by metal alloy at 100 degree = heat absorbed by water at 18.7 degree C

now we have

now we have

so specific heat capacity of unknown metal is 656.8 J/degree C kg

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true