The star'scolor is an important property of stars because it provides some information about the temperature of a star. The correct option is C.
A star'shue depends on its temperature; cooler stars seem red, while hotter stars appear blue or white.
This is due to the fact that although stars emitlight over the full spectrum, the predominant hue in the light that we perceive is the color that corresponds to the star's temperature.
The other stated characteristics, such as a star's name, distance from the star, and shape, have no direct bearing on a star's temperature.
However, these characteristics can also provide crucialdetails about the star, such as its size, brightness, and location in the sky.
Thus, the correct option is C.
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Answer:
The stars color
Explanation:
Scientists know how a Star is by their color like blue is hotter than red
Answer:
E.) None of the above
Explanation:
Draw a free body diagram. There are two forces acting on the car. Normal force perpendicular to the road, and weight downward.
Sum of the forces perpendicular to the road:
∑F = ma
N − mg cos θ = 0
N = mg cos θ
Sum of the forces towards the center of the circle:
∑F = ma
N sin θ = mv²/r
mg cos θ sin θ = mv²/r
g cos θ sin θ = v²/r
v = √(gr cos θ sin θ)
Given r = 50 m and θ = 5°:
v = √(9.8 m/s² × 50 m × cos 5° × sin 5°)
v = 6.52 m/s
v = 14.6 mph
Answer:
__________
Explanation:
T
F
Answer: 25 N
Explanation:
the fist hit by the black belt Alice in the Taekwondo has been given to have a mass of 0.5 kg which acquires a velocity of 5 m/s in a time of 0.1 sec, therefore, the average net force which is being applied to the fist can be calculated by the following method,
Given, mass m=0.5 kg, velocity v=5 m/s, time t=0.1 sec
As we know that, acceleration
Thereby,
Answer:
25N
Explanation:
Find acceleration first
A=v-u/t
acceleration = 5/0.1s =50m/s^2
then find net force using f=mass x acceleration, which iin this case is 25N
Answer:
√2
Explanation:
If the final kinetic energy is 2 times the initial kinetic energy:
KE = 2 KE₀
½ mv² = 2 (½ mv₀²)
v² = 2 v₀²
v = √2 v₀
Therefore, the ratio of the final momentum to the initial momentum is:
p / p₀
mv / (mv₀)
v / v₀
√2