Chintu and raven build a roccket, which moved from the earth to about 86m into the shy. It tales 3.7 seconds to reach the rocket
1 answer:
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Answer:
The height reached by the material on Earth is 91 km.
Explanation:
Given that,
Mass
Radius = 1821 km
Height
Suppose we need to find that how high would this material go on earth if it were ejected with the same speed as on Io?
We need to calculate the acceleration due to gravity on Io
Using formula of gravity
Put the value into the formula
Let v be the speed at which the material is ejected.
We need to calculate the height
Using the formula of height
Using ratio of height of earth and height of Io
Put the value into the formula
Hence, The height reached by the material on Earth is 91 km.
Answer:
Explanation:
The frequency of a light is inversely proportional to its wavelength. It is given by:
The speed of the red light, v = 3.0 × 10⁸ m/s
The wavelength of the red light, λ = 690 nm = 690 ×10⁻⁹ m
Thus, the frequency of red light emitted by neon sign having wavelength 690 nm is