200.0N
173.2N
115.5N
86.6N
50.0N
Correct answer is E
x = 100 cos50o = 50N
The saturation vapour of a liquid depends on its
volume
temperature
mass
density
pressure
Correct answer is B
No explanation has been provided for this answer.
Melting ice cools an orange drink far better than the same mass of ice-cold water because
melting ice is lower temperature than ice-cold water
water has a higher specific heat than ice
ice floats and cools the air above the drink
ice absorbs latent heat during melting
ice makes better thermal contact than water
Correct answer is D
No explanation has been provided for this answer.
1:3
3:1
3:7
7:3
15:8
Correct answer is A
heat supplied by hot water = heat gained by cold water M1C(82 - 40) = M2C(40 - 26)
\(\frac{M_2}{M_1}\)= \(\frac{14}{42}\)
= 1: 3
stores the steam for future use
prevents the steam from escaping
ensures that only dry steam gets into the calorimeter
allows condensed steam to go into the calorimeter
determine the quantity of steam used
Correct answer is C
No explanation has been provided for this answer.