Answer:
23.63 °C
Explanation:
= mass of water = 0.250 kg
= initial temperature of water = 20.0 °C
= Specific heat of water = 4186 J/(kg °C)
= mass of aluminum = 0.400 kg
= initial temperature of aluminum = 26.0 °C
= Specific heat of aluminum = 900 J/(kg °C)
= mass of copper = 0.100 kg
= initial temperature of copper = 100 °C
= Specific heat of copper = 386 J/(kg °C)
= Final temperature of mixture
Using conservation of heat
( - ) + ( - ) + ( - ) = 0
(0.250) (4186) ( - 20) + (0.400) (900) ( - 26) + (0.100) (386) ( - 100) = 0
= 23.63 °C
Among the choices the <span>statements that best explains why the size of the refracting telescope lens is kept small at the cost of reducing its capacity to gather radiations from space is "</span><span>Big lenses do not focus light properly to produce clear images. "</span>
<span> the answer is chloroplasts</span>
Answer:
5.68 x 10¹⁵ km
Explanation:
Recall that 1 lightyear = 9.461 x 10¹² km
hence
600 lightyears
= 600 x 9.461 x 10¹²
= 5.6766 x 10¹⁵
= 5.68 x 10¹⁵ km (rounded)