In this question we have given
velocity of missile=1350m/s
angle at which missile is moving=25degree
distance between missile and targets=23500m
angle between target and missile=55degree
time=10.2s
To find the final velocity of missile we will first find the acceleration required
Let x be the horizontal component of distance
x - vertical component of distance
t-time
ax- horizontal component of acceleration
ay-Vertical component of acceleration
Vx-horizontal component of velocity
Vy-Vertical component of velocity
horizontally: x = Vx*t + ½*ax*t²
23500m * cos55.0º = 1350m/s * cos25.0º * 10.20s + ½ * ax * (10.20s)²
ax = 19.2 m/s²
V'x = Vx + ax*t = 1350m/s * cos25.0º + 19.2m/s² * 10.20s = 1419 m/s
similarly vertically:
y = Vy*t + ½*ay*t²
23500m * sin55.0º = 1350m/s * sin25.0º * 10.20s + ½ * ay * (10.20s)²
ay = 258 m/s²
V'y = Vy + ay*t = 1350m/s * sin25.0º + 258m/s² * 10.20s = 3204 m/s
Therefore
V = √(V'x² + V'y²) = 3504 m/s
therefore magnitude of final velocity of missile=3504m/s
Answer: 43 minutes and 14 seconds.
Explanation:
The speed of light in a vacuum is approximately 186,282 miles per second (299,792 kilometers per second). To find the time it takes for light to travel from the Sun to Jupiter, divide the distance by the speed of light:
Time = (Distance from Sun to Jupiter) / (Speed of Light)
Time = (5.2 AU * 93 million miles/AU) / (186,282 miles/second)
Now, you can calculate the time in seconds and convert it to minutes:
Time = [(5.2 * 93 million miles) / (186,282 miles/second)] * (1 minute / 60 seconds)
Time ≈ [(483.6 million miles) / (186,282 miles/second)] * (1 minute / 60 seconds)
Time ≈ (2594.16 seconds) * (1 minute / 60 seconds)
Time ≈ 43.236 minutes
So, it takes approximately 43.236 minutes for light from the Sun to reach Jupiter, which is about 43 minutes and 14 seconds.
The correct answer is
A concave lens diverges light and curves inward.
A picture of a concave lens and the ray diagram produced by it can be seen in attachment. As it can observed, the concave lens (also called diverging lens) is wider at the edges and narrow at the centre (so, it curves inward), and it can also be seen that the lens diverges the incoming light rays.
A concave lens diverges light and curves inward is the statement which
describes its characteristics.
This type of lens is used to treat short-sightedness and has at least one of
its surface curving inward. This helps it to spread out light rays so as to
ensure proper view.
It has a high degree of diffraction and is the reason why option A was
chosen as it's the most appropriate choice.
Read more about Concave lens here brainly.com/question/3140453
As you run toward a source of sound, you perceive the frequency of that sound to decrease.
Explanation:
Doppler's effect is a principle used to describe the frequency and the intensity of sound and wavelengths of a source and observer with the two possibilities.
(i) Stationary sound source and moving observer.
(ii) Moving sound source and a stationary observer. It is a relative motion.
Consider when the observer is moving towards a source, the frequency of the sound will be higher and when moving away from the source, the frequency will decrease.
frequency is the speed of vibration and this determines the pitch of the sound. it is only useful or meaningful for musical sounds. where there is a strongly regular waveform. frequency is measured as the number of wave cycles that occur in one second. the unit that is being measured is (hz)
Answer:
the acceleration is 2.5 MPH over 12 mins.
Explanation:
30 MPH in 12 minutes=
30/12=
2.5