Answer:
minimum angle is 128.69°
Explanation:
given data
player velocity with respect ground v1 = 3.5 m/s
ball velocity with respect himself v2 = 5.6 m/s
to find out
smallest angle
solution
we know ball velocity with respect field will be
ball velocity = v1 +v2
ball velocity = 3.5 + 5.6 = 9.1m/s
we consider angle that player hit ball is θ
then by as per figure triangle
cosθ =
cosθ =
θ = 51.31
so minimum angle is 180 - 51.31 = 128.69°
Pearl Ash is an example of an Impure Potassium Carbonate
Answer:
-4.769x
Explanation:
In order to develop the problem it is necessary to bring up the concepts related to Eyepiece or Focal Length of an ocular lens, i. e, the distance from the principal plane of the eyepiece where parallel rays of light converges to a single point. The equation is given by,
Where,
N= Near point
Magnification
Focal length
By replacing the values we can obtain that:
It is then possible to find the magnification of the telescope with the previous data found through
Answer:
176ft/s
Explanation:
Speed of a wave is a function of the frequency and wavelength of the wave. It is expressed mathematically as:
V = fλ where:
V is the speed of the wave
f is the frequency
λ is the wavelength
Given f = 16Hz, λ = 11ft
V = 16×11
V = 176ft/s
Answer:
The contraction in the rod is 71 mm.
Explanation:
Given that,
original length L'= 2.99 m
Speed
We need to calculate the length
Using expression for length contraction
Where,
Where, v = speed of observer
c = speed of the light
Put the value into the formula
The expression for the contraction in the rod
Hence, The contraction in the rod is 71 mm.