Answer:
Wd/wp =1
Explanation:
The work done in lifting the box directly, is the same as lifting the box using pulley.
Answer:
6 The earth come between the sun and moon
7 Full moon
8 entire night side of the earth.
9 The earth atmosphere acts as a prism and filter refracting longer wavelengths of sunlight enough to color the muted reflections from the moon.
Explanation:
Ventilation is very important because it helps remove the gas form people’s homes and schools and it redirects the random gas outside so it is less likely to hurt people
The force = 0.3 * 9.8 = 2.94
x = 0.13
k = 2.94/0.13
k = 22.6 N/m