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Pepsi [2]
3 years ago
12

Jason applies a force of 4.00 newtons to a sled at an angle 62.0 degrees from the ground. What is the component of force effecti

ve in pulling the sled horizontally along the ground?
Physics
1 answer:
creativ13 [48]3 years ago
6 0

Answer:

1.88 N

Explanation:

Given in the question,

force applied by Jason  = 4N

angle which it make with the ground = 62°

The angle made with the x-axis is cosine of the angle 62°

Thus, the horizontal component of the force is equal to

F = 4.00(cos62⁰) = 1.88 N

              /

            /

4N     /

       /

     / 62°

  Ф ------------------------

   

by using trigonometry identity

cosФ = adjacent / hypotenuse

horizontal force = hypotenuse (cos(Ф))

horizontal force = 4cos(62)

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Elodia [21]

Answer:

A

Explanation:

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3 years ago
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Discuss whether any work is being done by each of the following agents and, if so, whether the work is positive or negative: (a)
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Answer:

a) As the chicken is still, the displacement is zero, which implies that the work is zero.

b) as the person is still there is no displacement therefore the work is zero

c) Lagraua applies a vertical force and the displacement is vertical, therefore the Work is positive

d) the force of gravity is directed downwards and the displacement is upwards, therefore the angle between it is 180º and the 180º fly is -1. Consequently the lock is negative

e) when the person meticulously feels the upward force and the displacement is downward, therefore the work is negative

Explanation:

Work is defined by the expression

        W = F. r

bold letters indicate vectors, we can write this expression as a module

        W= F r cos θ

where is at the angle between force and displacement.

Let's apply this expression to the different cases

a) As the chicken is still, the displacement is zero, which implies that the work is zero.

b) as the person is still there is no displacement therefore the work is zero

c) Lagraua applies a vertical force and the displacement is vertical, therefore the Work is positive

d) the force of gravity is directed downwards and the displacement is upwards, therefore the angle between it is 180º and the 180º fly is -1. Consequently the lock is negative

e) when the person meticulously feels the upward force and the displacement is downward, therefore the work is negative

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3 years ago
What is four possible energy sources for a circuit
VashaNatasha [74]
<span>electric, solar, wind, and geothermal.</span>
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When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according to Φm=5.0t2−2.0t, where Φm
goldfiish [28.3K]

Answer:

A) ( - 200t + 40 ) volts

B)  b) anticlockwise ,  c) anticlockwise , d) clockwise ,  e) clockwise

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Given data:

magnetic flux (Φm) = 5.0t^2 − 2.0t

number of turns = 20

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E = - N \frac{d\beta }{dt}

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<u>b) Determine direction of induced current </u>

i) at t = 0

 E = - 0 + 40  ( anticlockwise direction )

ii) at t = 0.10

E = -20 + 40 =  20 ( anticlockwise direction )

iii) at t = 1

E = - 200 + 40 = - 160 ( clockwise direction)

iv) at t = 2

E = -400 + 40 =  - 360 ( clockwise direction )

8 0
3 years ago
If a basketball travels a distance of 4 meters in 5 seconds, what is its average speed?
aliya0001 [1]

Average speed = (distance covered) / (time to cover the distance)


Average speed = (4 meters) / (5 seconds)


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Average speed = 0.8 m/s

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