Answer:
the answer is D. Convection Cells
Can you write the formula for kinetic energy ?
Here, let me help you:
Kinetic energy = (1/2) (mass) (speed)² .
Look at the (speed) in the formula. It's squared.
So if the speed gets multiplied by (something),
the kinetic energy gets multiplied by (something)² .
If the speed starts out at 1 m/s, but gets multiplied by 4,
then the kinetic energy gets multiplied by (4)² = 16 .
Answer:
The answer to your question is: W = 2063.4 J
Explanation:
Data
Force = 157 N
angle = 25°
distance = 14.5 m
W = ?
Process
- Find the horizontal force
cos Ф = adjacent side / hypotenuse
adjacent side = hypotenuse x cosФ
a.s. = 157 x cos 25
a. s. = 142.3 N
- Find the work
W = F x d
W = 142.3 x 14.5
W = 2063.4 J