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Katyanochek1 [597]
3 years ago
14

Dopo aver definito il seno e il coseno di un angolo acuto a partire da un triangolo rettangolo rettangolo generico, dimostrare (

descrivendo e motivando i vari passaggi) che sin 30° = 1/2 e sin 45° 2/2. ricavare infine la relazione trigonometrica fondamentale
Physics
1 answer:
Marrrta [24]3 years ago
8 0

do you know Explanation:

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Albert is on Earth and measures the speed of light from the sun as 3 E8 m/s. He then gets in a spaceship and speed toward the su
Flura [38]
Choice B, 3 E8 m/s because it will stay the same no matter where he is or how fast he's going
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3 years ago
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The speed of sound in air on a certain stormy day is about 1130 feet per second. you see a flash of lightning striking some dist
Anna35 [415]

Answer  4,520 feet   Explanation The light and the sound were produced at the same time but sound took long to reach since is speed is much lower than the speed of light. Speed is the rate of change of distance.  So; Distance = speed × time                 = 1130 × 4                  = 4,520 feet.

6 0
3 years ago
1: A car traveling at 10 m acceleration uniformly at 2 m. Calculate its velocity after5 s.
s344n2d4d5 [400]

Answer:

20 m/s

Explanation:

v = u + at

v: final velocity

u: initial velocity

a: acceleration

t: time

v = 10 + 2(5)

v = 10 + 10

v = 20 m/s

4 0
4 years ago
Which of these devices is a type of aerobic exercise machine?
Vsevolod [243]

Answer:

Aerobic exercise is an important component of a healthy lifestyle. Find out more about aerobic equipment that can help keep you fit.

Aerobic equipment simulates the movements of aerobic exercises such as walking, jogging, rowing, skiing, hiking, biking, and climbing. These activities rhythmically and continuously move your large muscles — the key to getting your heart beating fast enough and long enough for aerobic conditioning.

5 0
3 years ago
A(n) 69.8 kg astronaut becomes separated from the shuttle, while on a space walk. She finds herself 60.4 m away from the shuttle
alukav5142 [94]

Answer:

The time taken is 6.7  min

Explanation:

Using the linear momentum conservation theorem, we have:

m_1*v_{o1}+m_2*v_{o2}=m_1*v_{f1}+m_2*v_{f2}

when she was 60.4m from the shuttle, she has zero speed, so the initial velocity is zero.

m_1*0+m_2*0=m_1*v_{f1}+m_2*v_{f2}\\m_1*_{f1}=-m_2*v_{f2}\\v_{f1}=-\frac{m_2*v_{f2}}{m_1}\\\\v_{f1}=-\frac{0.886kg*12m/s}{69.8kg}\\\\V_{f1}=-0.15m/s

That is 0.15m/s in the opposite direction of the camera.

the time taken to get to the shuttle is given by:

t=\frac{d}{v_{f1}}\\\\t=\frac{60.4m}{0.15m/s}\\\\t=403s\\t_{min}=403s*\frac{1min}{60s}=6.7min

6 0
3 years ago
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