The portion of the visible electromagnetic spectrum (sunlight) having the shortest wavelength is:
1 answer:
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Answer:
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<u>Answer: </u>
Maximum height reached by the ball thrown up at 30m/s is 3.06 seconds and the height reached is 45.9 meters
<u>Explanation</u>:
Given:
Initial velocity
To find :
maximum height =?
time taken=?
Solution:
<em>Step 1:Finding the time taken to reach the highest point</em>:
The velocity of the ball at its highest ,final velocity v=0
Using the formula,
Where a is acceleration due to gravity.Its value is
Substituting the values:
<em>Step 2: finding the highest point </em>
Using the formula
where
s is the maximum highest.
Substituting values
Result:
Thus the maximum height reached is 45.9 meters in 3.06 seconds
Answer:
Orbital period of satellite is 5.83 x 10³ s
Explanation:
The orbital period of satellite revolving around Earth is given by the equation :
.....(1)
Here R is radius of Earth, h is height of satellite from the Earth's surface, M is mass of Earth and G is gravitational constant.
In this problem,
Height of satellite, h = 500 km = 500 x 10³ m
Substitute 6378.1 x 10³ m for R, 500 x 10³ m for h, 5.972 x 10²⁴ kg for M and 6.67 x 10⁻¹¹ m³ kg⁻¹ s⁻² for G in equation (1).
<em>T</em> = 5.83 x 10³ s