A soccer player kicks a soccer ball at +10.0 m/s at an angle of 60°. What are the horizontal and vertical components of velocity
of the kick?
2 answers:
Answer:
Horizontal component:
Vertical component:
Explanation:
We have the launch speed and the angle of 60°, so the components of the speed
and
are those shown in the attached image.
which is the horizontal component of the velocity can be found by multiplying the cosine of the angle by the initial velocity:
which is the verticalcomponent of the velocity is found by multiplying the sine of angle by the initial velocity
In summary:
Horizontal component:
Vertical component:
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Answer:
(a) T = 2987.6 k
(b) T = 19986.2 k
Explanation:
The temperature of a star in terms of peak wavelength can be given by Wein's Displacement Law, which is as follows:
where,
T = Radiated surface temperature
= peak wavelength
(a)
here,
= 970 nm = 9.7 x 10⁻⁷ m
Therefore,
<u>T = 2987.6 k</u>
(b)
here,
= 145 nm = 1.45 x 10⁻⁷ m
Therefore,
<u>T = 19986.2 k</u>