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drek231 [11]
3 years ago
14

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics
1 answer:
gayaneshka [121]3 years ago
4 0

Work = force x distance

So we are looking for something related to displacement.

The work done must also be done in the same direction, parallel to the displacement, and therefore in the same direction of the motion as well.


So:

In order to do work, the force vector must be in the same direction as the displacement vector and the motion.

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A 1kg pool ball travels to the right at 2m/s and hits another stopped pool ball bounces back to the left at 1m/s what is the vel
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A series RCL circuit contains a 65.2-Ω resistor, a 2.26-μF capacitor, and a 2.08-mH inductor. When the frequency is 2400 Hz, w
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Answer:

The power factor of the circuit is 0.99

Explanation:

Given;

resistance of the resistor, R = 65.2 ohms

capacitance of the capacitor, C = 2.26 μF = 2.26 x 10⁻⁶ F

inductance, L = 2.08 mH = 2.08 x 10⁻³ H

frequency of the AC, f = 2400 Hz

The angular frequency is given by;

ω = 2πf

ω = 2π(2400) = 15081.6 rad/s

The inductive reactance is given by;

XL = ωL

XL = (15081.6 x 2.08 x 10⁻³)

XL = 31.37 ohms

The capacitive reactance is given by;

X_c = \frac{1}{\omega C} \\\\X_c = \frac{1}{(15081.6)(2.26*10^{-6} )}\\\\X_c = 29.34 \ ohms

The phase difference is given by;

tan\phi = \frac{X_l - X_c}{R}\\\\ tan\phi =\frac{31.37-29.34}{65.2} \\\\tan\phi = 0.0311 \\\\\phi  = tan^{-1} (0.0311)\\\\\phi  = 1.78^0

The power factor is given by;

CosФ = Cos(1.78) = 0.99

Therefore, the power factor of the circuit is 0.99

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What is the momentum of an object whose velocity is zero? How does Newton’s first law of motion include the case of an object at
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Answer:

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Where, m is the mass and v be the velocity of the body.

it is a vector quantity and its unit is newton second.

When the velocity of the object is zero, the momentum is also zero.

Newtons' first law states that the body is at rest or in motion , it remains at rest or in motion until and unless an external force is not applied on the body.

So, When a body is at rest it remains at rest.

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s344n2d4d5 [400]

Answer:

The shapes of different lipids influence how much a membrane can curve (i.e. bend). The intrinsic molecular volume of the head-group and composition of the fatty acyl chains (i.e. saturated vs unsaturated) in lipids will determine strict steric dimensions and distinct shapes for each lipid species.

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