16.42 seconds will elapse between passing B on the way up and coming back to B on the way down.
<h3>What is the definition of Angular Speed? </h3>The rate of change of angular displacement is defined as angular speed, and it is stated as follows:
ω = θ t
Where,
θ is the angle of rotation,
t is the time
ω is the angular velocity
Given data;
sin a = 2/5
a=sin(2/5)
a=23°
The linear velocity is the product of the angular velocity and the length.
The times between the two points are found as;
Hence, the time between passing B on the way up and returning to B on the way down will be 16.42 sec.
To learn more about the angular speed refer to the link;
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Answer:
a. Time=25seconds
b.distance=1041.67m
Explanation:
a.The equation for in terms of m/s is
after conversion.
To find when speed reaches 300km/hr=83.33m/s, we find and solve for
b. From a, above we already have our t=25seconds as the time it takes before the plane is airborne.
#To find distance travelled in that time , we substitute for in our distance equation:
Hence the distance of the plane before it gets airborne is 1041.67m
The density of the nugget is and is made of gold
Explanation:
The density of an object can be calculated as
where
d is the density
m is the mass
V is the volume of the object
We have to note that density of an object actually depends on the material the object is made of (therefore, two objects made of the same material can have different mass and different volume, but they have same density).
For the nugget in this problem, we have:
mass: m = 38 g
volume:
So, its density is
And by looking at the table, we see that this value corresponds approximately to the density of gold, so the nugget is made of gold.
Learn more about density:
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Explanation:
hope it's help you ok have a good day
