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2 years ago

20 pts !!!!

Physics

1 answer:

garri49 [273]2 years ago

4 0

Am not really sure but what i see is D

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Two forces F1 and F2 are applied at the same point of an object. F1 has a magnitude of 20 N and is directed at an angle of 120 d

butalik [34]

Answer:

The value is $\vec F_{n} = -5.67 i +14.82 j \ \ N$

Explanation:

From the question we are told that

The magnitude of the first force is $F_1 = 20 \ N$

The angle which it makes with the x-axis is $\theta_1 = 120 ^o$

The magnitude of the second force is $F_2 = 5 \ N$

The angle which it make with x-axis is $\theta_2 = -30 ^o$

Generally the x-component of the first force is

$F__{1x}} = 20 cos (120 )$ '

=> $F__{1x}} = -10 \ N$

Generally the y-component of the first force is

$F__{1y}} = 20 sin (120 )$

=> $F__{1y}} = 17.32 \ N$

Generally the vector representation of the first force is mathematically represented as

$\vec F_1 = [ -10 i + 17.32 j \ ] \ N$

Generally the x-component of the second force is

$F__{2x}} = 20 cos (-30 )$

=> $F__{2x}} = 4.33 \ N$

Generally the y-component of the second force is

$F__{2y}} = 20 sin (-30 )$

=> $F__{2y}} = -2.5 \ N$

Generally the vector representation of the first force is mathematically represented as

$\vec F_2 = [ 4.33 i - 2.5 j \ ] \ N$

Generally the net force acting that point is mathematically represented as

$\vec F_{n} = -10 i + 17.32 j + 4.33 i - 2.5 j$

=> $\vec F_{n} = -5.67 i +14.82 j \ \ N$

6 0

3 years ago

On Monday when you ask your friend if you should dump The person your day and she said yes now on Wednesday she says no since yo

emmainna [20.7K]

Answer:

Her answer is not reliable.

Explanation:

Reliability and validity are two major concepts that are used to assess the standard and quality of response/research.

While validity of an instrument is the idea that the instrument measures what it intends to measure, reliability is all about consistency and whether or not results could be replicated.

While your friend's answer may be valid, it can't reliable because of the differences in her response within a short time.

3 0

3 years ago

(D.) Define the following Moment (.) Moment of a force (.) couple of force (.) torque<br>

erik [133]

Moment of force. Hope this helped

4 0

2 years ago

a charge of 30. coulombs passes through a 24-ohm resistor in 6.0 seconds. what is the current through the resistor? (1) 1.3 a (3

DochEvi [55]

As I = Q/t (charge/time) the answer is 5a.

30/6 = 5

7 0

3 years ago

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Why does it take much longer time and distance to stop a moving ship in water than a moving car on the road

Naddik [55]

The force on the ship is more than a car

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3 years ago