Question 7

BlackZzzverrR [31]

So, <u>the value of the work is approximately 84.65 J</u>.

<h2>Introduction</h2>

Hi ! Here I will help you to discuss the subject about work that caused by force in amount value of angle. Work is affected by the force and displacement.

If related to the magnitude of the force, the amount of work will be proportional to the magnitude of the applied force. Thats mean, if the value of the force that applied on it is greater, then the value of the work will be greater.
If related to the magnitude of shift, the amount of work will be proportional to the magnitude of shift of object. Thats mean, if the value of the shift on it is greater, then the value of the work will be greater.

<h3>Formula Used</h3>

The work done by a moving object can be expressed in the equation:

If the Angle Is Ignored

$\boxed{\sf{\bold{W = F \times s}}}$

If the Angle Effect on Work

$\boxed{\sf{\bold{W = F \times s \times \cos(\theta)}}}$

With the following condition:

W = work that done by object (J)
F = force that applied (N)
s = shift or distance (m)
$\sf{\theta}$ = angle of elevation (°)

<h3>Solution</h3>

We know that :

F = force that applied = $\sf{1.41 \times 10^4}$ N
s = shift or distance = 84.9 m
$\sf{\theta}$ = angle of elevation = 45°

What was asked ?

W = work that done by object = ... J

Step by step :

$\sf{W = F \times s \times \cos(\theta)}$

$\sf{W = (1.41 \cdot 10^4) \times 84.9 \times \cos(45^o)}$

$\sf{W = (1.41 \cdot 10^4) \times 84.9 \times \frac{\sqrt{2}}{2}}$

$\sf{W = 119.709 \times \frac{\sqrt{2}}{2}}$

$\sf{W = 59.8545 \sqrt{2}}$

$\boxed{\sf{W \approx 84.65 \: J}}$

<h3>Conclusion</h3>

So, the value of the work is approximately 84.65 J.

3 0

1 year ago

Why do we need to take care of the surface water/groundwater?

ANEK [815]

Answer:

sghskm

rohit zimheisbwhx

3 0

2 years ago

Read 2 more answers

When two different species compete for resources, it is______ competition.

Katen [24]

Answer:

it is a interspecific competition

Explanation:

i just took a test with this question

4 0

3 years ago

Light falls on two slits 0.0000716 m apart and produces an interference pattern in which

grigory [225]

Answer:

λ = 6.802 10⁻⁷ m, wavelength corresponds to orange almost red

Explanation:

The expression for constructive interference is

d sin θ = m λ

let's use trigonometry

tan θ = y / L

tan θ = sin θ / cos θ

interference experiments angles are very small

tan θ = sin θ = y / L

substituting

$d \ \frac{y}{L}$ = m λ

in this case they indicate the separation of the slits d = 7.16 10-5 m, the order of the interference is m = 4, the distance y = 3.8 10-2 m and the separation to the screen L = 1 m

A) they ask us for the wavelength

λ = $\frac{d y}{ m L}$

let's calculate

λ = 7.16 10⁻⁵ 3.8 10⁻² /(4 1)

λ = 6.802 10⁻⁷ m

B) Let's reduce the wavelength to nm

λ = 6.802 10⁻⁷ m (109 nm / 1m)

λ = 680.2 nm

this wavelength corresponds to orange almost red

5 0

3 years ago

PLEASE HELP, I don’t know how to do this

MrRa [10]

Explanation:

7) Given:

v₀ = 2.0 m/s

v = 0 m/s

t = 3.00 s

Find: Δx

Acceleration isn't included in the problem, so use a kinematic equation that doesn't involve a.

Δx = ½ (v + v₀) t

Δx = ½ (0 m/s + 2.0 m/s) (3.00 s)

Δx = 3.0 m

8) Given:

v₀ = 0 m/s

v = 5 m/s

t = 4 s

Find: a

Displacement isn't included in the problem, so use a kinematic equation that doesn't involve Δx.

v = at + v₀

5 m/s = a (4 s) + 0 m/s

a = 1.25 m/s²

9) Given:

v_avg = Δx / t

0.5 m/s = 8 m / t

t = 16 s

7 0

3 years ago