a. Distance moved by effort = 1 meter
b. Work done by effort = 80 Joules
c. Losses in energy = 18 Joules
<h3>How to determine the parameters</h3>
a. Note that velocity ratio is defined as the ratio of a distance through which any part of a machine moves to the distance moved by its parts
Velocity ratio = distance moved by the effort/distance moved by the body
Where velocity ratio = 5
vertical distance = 20cm
Distance moved by effort = 5 × 0. 20 = 1 meter
b. Formula for work done is given as ;
Work done = Effort × distance moved by effort
Work done = 80 × 1
Work done = 80 Newtons
c. First, let's find the work output
Work output = m g h
Work output = 50 × 9.8 × 0. 20
Work output = 98 Joules
Losses in energy = Work output - work done
Losses in energy = 98 - 80
Losses in energy = 18 Joules
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40/100=0.4 and 72/0.4=180
so the answer is 180
5.6mile
7 x
-- = --
80 64
7×64=80x
448=80x
x=5.6
There are two triangles in the figure(triangular prism) option third is correct.
<h3>What is a triangular prism?</h3>
When a triangle is, stretch it out to produce a stack of triangles, one on top of the other. A triangular prism is a name given to this novel 3D object.
The complete question is:
How many triangles are needed to draw the net of this object?
For the figure please refer to the attached picture.
As we can see in the figure we have given a triangular prism:
The triangular prism has two triangles.
A triangle for the base of the prism and a triangle for the top of the prism.
The lateral faces of the prism are rectangular.
Thus, there are two triangles in the figure(triangular prism) option third is correct.
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Answer:

Step-by-step explanation:
We need to write
as a single logarithm.
We know that

Therefore we have:

→ 
→ 
The solution is: 