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3 years ago

What is the SI unit of pressure? A. g/cm3 B. the pascal C. the newton D. m/s2

Physics

2 answers:

sesenic [268]3 years ago

6 0

The basic definition of pressure is force/area and the scientific community defined that as the Pascal (Pa).

Mekhanik [1.2K]3 years ago

5 0

N/m2 ............. may also be the answer youre looking for

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A mechanic needs to replace the motor for a merry-go-round. The merry-go-round should accelerate from rest to 1.5 rad/s in 7.0 s

marta [7]

Answer

given,

initial speed of merry-go-round = 0 rad/s

final speed of merry-go-round = 1.5 rad/s

time = 7 s

Radius of the disk = 6 m

Mass of the merry-go-round = 25000 Kg

Moment of inertia of the disk

$I = \dfrac{1}{2}MR^2$

$I = \dfrac{1}{2}\times 25000\times 6^2$

I = 450000 kg.m²

angular acceleration

$\alpha = \dfrac{\omega_f-\omega_0}{t}$

$\alpha = \dfrac{1.5-0}{7}$

$\alpha =0.214\ rad/s^2$

we know,

$\tau= I \alpha$

$\tau= 450000\times 0.214$

$\tau=96300\ N.m$

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3 years ago

Tech A says motor action occurs through the interaction of the magnetic fields of the field coils and the armature, which causes

masha68 [24]

Answer:

Both A and B

Explanation:

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3 years ago

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Ostrovityanka [42]

I don’t know the answer but try khan academy it’s very helpful with all subjects and is free

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3 years ago

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Alenkasestr [34]

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3 years ago

HEY CAN ANYONE PLS ANSWER DIS RQ!!!!

Bezzdna [24]

Answer:

Negative

Explanation:

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Hope this helped!

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3 years ago