Droughts are a real concern because although water is constant, water is not evenly distributed amongst every location on Earth. Many places experience a monsoon season or other extremely wet period, but many other places feature a more desert terrain and climate. In there locations, there is little to no water accessible.
Also, if a normally wet location is experiencing a drought, plants and agriculture that rely on an abundance of water could die, limiting food sources.
Answer:
inches and feet (or even centameters)
Explanation:
these are all common units used to measure height
Answer:
a) ω = 91.1 rad/s
b) KEr = 15.0 J
Explanation:
I = (2/3)mR²
ω = v/R
PE = KE
mgh = ½mv² + ½Iω²
mgh = ½mv² + ½(2/3)mR²(v/R)²
2gh = v² + (2/3)v²
2gh = 5/3v²
v² = 6gh/5
ω² = v²/R² = 6gh/5R²
a. At what rate was it rotating at the base of the hill?
ω = √(6(9.81)(9.00) / (5(0.226/2)²) = 91.1 rad/s
b. How much rotational kinetic energy did it then have?
KE = ½Iω² = ½(⅔)(0.426)(0.113)²(91.1²) = 15.044616
Answer:
Power, P = 307.31 W
Explanation:
It is given that,
Kasek climb at an angle of 6° with the horizontal at a steady speed of 4.0 m/s.
The total mass of bicycle and Kasek is 75 kg
We need to find the Kasek's power output to climb the same hill at the same speed. The angle is made with the horizontal. It means that,
F = F sinθ
So,
Power output is given by :
So, Kasek's power output to climb the same hill is 307.31 W.