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4 years ago

9

A __________ is a simplified version of a system.

1 answer:

Vladimir79 [104]4 years ago

3 0

Answer:

A model is a simplified version of a system

Explanation:

A model is the representation of a real object, or natural phenomenon that aims to show the real object or phenomenon looks like and the manner of operation, or how the a system or phenomenon works. A model can thus be used for testing and or research

The model of a real life object is generally smaller than the object and it is assumed that within given correctional factors, the property of a model and the real object are identical in the same environmental conditions.

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kap26 [50]

<h2>A is the correct answer!</h2><h3></h3><h3>I'm too lazy to explain :(</h3><h3></h3><h3><em>Please let me know if I am wrong.</em></h3>

6 0

3 years ago

What happens to myosin and actin as sarcomeres relax?

Leokris [45]

The myosin heads pull on the actin, bringing them closer together

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4 years ago

A proton experiences a force of 4 Newton when it enters perpendicular to the direction of the magnetic field with a speed 100 m/

____ [38]

Answer:

F = 0 N

Explanation:

Force on a moving charge in constant magnetic field is given by the formula

$F = q(\vec v\times \vec B)$

so here it depends on the speed of charge, magnetic field and the angle between velocity of charge and the magnetic field

here when charge is moving with speed 100 m/s in a given magnetic field then the force on the charge is given as

$F = 4 N$

now when charge is moving parallel to the magnetic field with different speed then in that case

$\vec v \time \vec B = 0$

so here we have

F = 0

7 0

3 years ago

If a wave travels 16 meters in 2 seconds, what is its wave speed?

GarryVolchara [31]

Wave speed is 8 m/s

Explanation:

Wave speed or speed of the wave is given by the formula

v = distance traveled by the wave/time

Here, distance traveled = 16 m and time = 2 s

⇒ Wave speed = 16/2 = 8 m/s

7 0

3 years ago

An airplane is flying in a horizontal circle at a speed of 480 km/h (). If its wings are tilted at angle =40° to the horizontal

german

Answer:

$R = 2162 m$

Explanation:

When wings of the airplane makes an angle of 40 degree with the horizontal so here we can say that force due to air is having two components

$F_y = mg$

$F_x = \frac{mv^2}{R}$

now we know that

$F_y = F cos40$

$F_x = F sin40$

also we know that

$v = 480 km/h$

$v = 133.3 m/s$

now plug in all data in above equations

$tan 40 = \frac{v^2}{Rg}$

$R = \frac{v^2}{g tan40}$

$R = \frac{133.3^2}{9.8 tan40}$

$R = 2162 m$

6 0

3 years ago