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Lelu [443]
3 years ago
11

A plane has a cruising speed of 250 miles per hour when there is no wind. at this speed, the plane flew 300 miles with the wind

in the same amount of time it flew 200 miles against the wind. find the speed of the wind.
Physics
1 answer:
kherson [118]3 years ago
4 0
The answer to your question is 50 miles per hour
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3 years ago
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If a moving object travels for a distance of 160 m. In 20 seconds what’s the average speed
Rus_ich [418]

Answer:

8.00

Explanation:

you have to divide

6 0
3 years ago
A 5.00 kg pendulum swings back and forth. At the top of its arc it reaches a height of 0.36 m. What is the velocity of the pendu
azamat

Answer:

Gravitational potential energy = (mass) x (gravity) x (height)

Kinetic energy (of a moving object) = (1/2) (mass) x (speed)²

When the pendulum is at the top of its swing, its potential energy is

(mass) x (gravity) x (height)

= (5 kg) x (9.8 m/s²) x (0.36 m)

= (5 x 9.8 x 0.36) joules

17.64 joules .

Energy is conserved ... it doesn't appear or disappear ... so that number is exactly the kinetic energy the pendulum has at the bottom of the swing, only now, it's kinetic energy:

17.64 joules = (1/2) x (mass) x (speed)²

17.64 joules = (1/2) x (5 kg) x (speed)²

Divide each side by 2.5 kg:

17.64 joules / 2.5 kg = speed²

Write out the units of joules:

17.64 kg-m²/s² / 2.5 kg = speed²

(17.64 / 2.5) (m²/s²) = speed²

7.056 m²/s² = speed²

Take the square root of each side: Speed = √(7.056 m²/s²) = 2.656 m/s.

Looking through the choices, we're overjoyed to see that one if them is ' 2.7 m/s '. Surely that's IT !

Hope this will help you ...

8 0
3 years ago
Convert the following: 52 miles/hour to meters/second
Komok [63]

Answer:

23.246 metres per second

Explanation:

divide the speed value by 2.237

5 0
3 years ago
what sense can people use to detect infrared radiation? we can see it as red light, we can feel it as heat, we can hear it as a
Ad libitum [116K]
We can feel it as heat, using the nerve endings in our skins.

7 0
3 years ago
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