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umka2103 [35]
3 years ago
12

When we add fractions we first check to make sure the ____are the same. Then we _____only the numerators

Physics
1 answer:
jenyasd209 [6]3 years ago
4 0

- denominators

- add


Be safe!

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In aircraft design, the pressure coefficient Cp is usually measured during wind tunnel testing of an aircraft component to predi
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Answer:

Check the explanation

Explanation:

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A sled that has a mass of 8 kg is pulled at a 50 degree angle with a force of 20 N. The force of friction acting on the sled is
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The acceleration of the sled will be 1.30 m/s². Force is defined as the product of mass and acceleration.

<h3>What is force?</h3>

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Given data;

m(mass of sled)=8 kg

Θ is the inclination of force= 50°

Force of friction,f=2.4 N.

The applied force at the given angle is resolved into the two-component as;

\rm F_h=F cos \theta \\\\ F_h= 20 cos 50 ^0 \\\\ F_h= 12.85 \ N

\rm F_v=F sin \theta \\\\  F_v=20 sin 50^0 \\\\   F_v=15.32 \ N

The net vertical force is zero;

\rm F_N=mg-Fsin50^0 \\\\ \rm F_N=8 \times 9.81 -15.32 \\\\ F_N=63.1 \ N \\\\

From Newton's second law the net force as;

\rm \sum F_{net}=ma \\\\ Fcos 60^0-f =ma \\\\ a=\frac{12.855-2.4}{8} \\\\a = 1.30 \ m/s^2

Hence, the acceleration of the sled will be 1.30 m/s².

To learn more about the force refer to the link;

brainly.com/question/26115859

#SPJ1

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2 years ago
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I hope this helps you
8 0
3 years ago
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Fuse should not be connected with neutral wire.Why? Write any two electric devices.​
Colt1911 [192]

Answer: Because the fuse can disconnect the circuit only when the excess current flows completely through the neutral. ... Since, neutral is not a live conductor coming from the source, disconnecting a neutral line can only open the current path through neutral. But, the live phase still carries the charge.

Explanation:

8 0
3 years ago
PLEASE HELP ASAP URGENT!!!!!
coldgirl [10]

Answer:

B

i am not fully sure but i believe its the most accurate its either A or B

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3 years ago
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