When evaporation occurs liquid absorbs heat from the surroundings to get converted to its vapour form as a result, there is an overall decrease in the heat leading to cooling of the liquid.

Hope that this was helpful :)

8 0

3 years ago

Ann successfully jumped over a 25.5 m-wideriver. Assuming that she started and landed at the same level and was airborne for 2.5

dolphi86 [110]

Answer:

Explanation:

t=Time airborne=2.54 s

R= horizontal range= 25.5 m

From the projectile motion equations we know that:

$H=\frac{g*t^{2}}{8}$

$H=\frac{9.8 \frac{m}{s^{2}} *(2.54s)^{2}}{8}$

H=7.9 m

7 0

3 years ago

Chiếu tia sáng vuông góc với bề mặt gương. Tính góc tới và góc phản xạ

frosja888 [35]

Vì khi chiếu tia tới vuông góc một mặt phẳng gương, tia tới trùng với pháp tuyển, góc tới bằng góc phản xạ bằng 0.

7 0

2 years ago