Answer:
see below
Explanation:
let one direction be negative and the other direction be positive
so
right = positive
left = negative
up = positive
down = negative
thus
d) -80 + 100 = 20 N
e) 35 - 55 = -20 N
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Answer:
4 photovoltaic cells are required to meet monthly energy consumption of the cabin.
Explanation:
Let suppose that PV generation system produces energy at constant energy, the number of photovoltaic system to meet energy consumption of the cabin is:
(1)
Where:
- Energy consumption of the PV system, in kilowatt-hours.
- Power generation of the PV cell, in kilowatts.
- Working times, in hours.
If we know that , and , then the number of photovoltai cells is:
4 photovoltaic cells are required to meet monthly energy consumption of the cabin.
1. Because if in an accident, they will get hurt and dangerous.
3. I think the middle seat because it’s safer from damages from the left and right
Volume = mass / density = 45.6/10.5 = .... L
Answer:
42.99°
Explanation:
= Kinetic friction force
= Pulling force at angle
= Weight of the box = 150 N
Kinetic friction force
Pulling force at angle
N = Pulling force
According to question
Applying Newton's second law in the vertical direction we get
The angle is 42.99°