Suppose we wanted to represent all of these objects on the 1-to-10-billion scale from Chapter 1, on which the Sun is about the s
1 answer:
Answer:
6.62 m
About 44.14 grapefruits lined in a single line would be the length of the diameter of star Aldebaran
Explanation:
First we know,
Diameter of the Sun - 1.39 million km (Ds)
Diameter of Aldbaran - 61.40 million km (Da)
Thus,
=
≈ 44.14
We know that in this scale the size of the sun is that of a grapefruit.
The average diameter of a grapefruit is about 15cm
Thus Ds in this scale is 15cm
Thus Da in this scale,
Da = Ds *44.14
Da = 0.15 * 44.14 ≈ 6.62 m
Thus the diameter of Aldebaran in this scale is 6.62 m
You might be interested in
One of the equations of gravity is this:
Where v = final velocity which is 7m/s
u = initial velocity which is 0 for objects falling from a height
g = acceleration due to gravity and it is approximately 10m/s^2. It's a constant so pretty much remember this number. It's positive since the work being done is caused by gravity (in other words, it's falling down). It can also be negative if the work being down is against gravity (in other words, it's going up)
h = height of object
Substitute for the values and you should have something like this
Where v = final velocity which is 7m/s
u = initial velocity which is 0 for objects falling from a height
g = acceleration due to gravity and it is approximately 10m/s^2. It's a constant so pretty much remember this number. It's positive since the work being done is caused by gravity (in other words, it's falling down). It can also be negative if the work being down is against gravity (in other words, it's going up)
h = height of object
Substitute for the values and you should have something like this
Answer: 4
The mechanical advantage is the ratio of the force exerted by the object to the force applied to do work on it.
Here, Jeff tried to lift a rock weighing 600 pounds by wedging board under the rock. Jeff who weighs 150 pounds uses all his weight to exert force on lever and lift rock.
Mechanical advantage,
Therefore, the mechanical advantage that lever provided to Jeff in lifting rock is 4.