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2 years ago

The net external force on the propeller of a 3.8 kg model airplane is 8.2 N forward.

Physics

1 answer:

monitta2 years ago

8 0

Answer:

<h3>The answer is 2.16 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

f is the force

m is the mass

From the question we have

$a = \frac{8.2}{3.8} \\ = 2.157894736...$

We have the final answer as

Hope this helps you

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The primary coil of a transformer has N1 = 275 turns, and its secondary coil has N2 = 2,200 turns. If the input voltage across t

DedPeter [7]

Answer:

Secondary voltage of transformer is 905.23 volt

Explanation:

It is given number of turns in primary of transformer $N_1=275$

Number of turns in secondary $N_2=2200$

Input voltage equation of the transformer

$\Delta v=160sin\omega t$

Here $v_{max}=160volt$

$v_{rms}=\frac{160}{\sqrt{2}}=113.15volt$

For transformer we know that

$\frac{V_1}{V_2}=\frac{N_1}{N_2}$

$\frac{113.15}{V_2}=\frac{275}{2200}$

$V_2=905.23Volt$

Therefore secondary voltage of transformer is 905.23 volt

6 0

2 years ago

What force causes Earth's centripetal motion?

Nastasia [14]

Fam im just answering a question so i can get mine answered im sorry im no help but i think its gravity

5 0

3 years ago

Read 2 more answers

In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to pu

tatuchka [14]

Answer:

3.90 degrees

Explanation:

Let g= 9.81 m/s2. The gravity of the 30kg grocery cart is

W = mg = 30*9.81 = 294.3 N

This gravity is split into 2 components on the ramp, 1 parallel and the other perpendicular to the ramp.

We can calculate the parallel one since it's the one that affects the force required to push up

F = WsinΘ

Since customer would not complain if the force is no more than 20N

F = 20

$294.3sin\theta = 20$

$sin\theta = 20/294.3 = 0.068$

$\theta = sin^{-1}0.068 = 0.068 rad = 0.068*180/\pi \approx 3.90^0$

So the ramp cannot be larger than 3.9 degrees

6 0

3 years ago

Can someone tell me the acceleration?

maw [93]

Acceleration is the speed of an object speeding up
Whether it is velocity or just speed

5 0

2 years ago

A vector has a magnitude of 30m at an angle of 225 degrees with respect to the positive x-axis and has a magnitude of 13m.what a

Aneli [31]

Answer:

I'm pretty sure this is not a complete question. My guess is that you are trying to add/subtract vectors. Vectors have both magnitude and direction, so vector A is pretty clear, but a magnitude of 13 (i'm guessing a resultant) without a direction is weird.

IF 13 is the magnitude of the resultant, vector B added to vector A could have any magnitude 17 ≤ B ≤ 43

It could have any direction of

θ = (225 - 180) ± arcsin(13/30)

θ = 45 ± 25.679...

70.679 ≤ θ ≤ 19.321

components of vector B would be

Bx = |B|cosθ

By = |B|sinθ

3 0

2 years ago