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Margarita [4]
3 years ago
12

Formulate your hypothesis​

Physics
1 answer:
inna [77]3 years ago
8 0

Explanation:

simple hypothesis null hypothesis and complex hypothesis

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What is the function of the lens of an eye?
VladimirAG [237]

Answer:

to see the beautiful world

to focus the light onto the retina

4 0
3 years ago
Read 2 more answers
A force of 250 N is applied to a hydraulic jack piston that is 0.02 m in diameter. If the piston that supports the load has a di
KATRIN_1 [288]

Answer:

C. 1400

Explanation:

The force exerted = f1 = 250

Diameter d1 = 0.02

r1 = d1/2 = 0.01

Diameter d2 = 0.15

r2 = d2/2 = 0.075

The mass of jack to lift

F1/A1 = f2/A2

250/r1² = f2/r2²

250/0.01² = f2/0.075²

When we cross multiply, we will have:

250x0.005625 = 0.0001f2

1.40625 = 0.0001f2

F2 = 1.40625/0.0001

F2 = 14062.5N

Force f = mg

g = 9.81

m = 14062.5/9.81

Mass = 1433Kg

Therefore option c is correct. A mass of 1400kg can be lifted by the jack

7 0
3 years ago
A 50.0 kg shell is fired from a cannon on Earth's
ANTONII [103]

ep = mgh

ep = (50.0)(9.81)(400)

ep = 196200 \: j

//

I also calculated it with 9.8 as the gravity and the answer was 196000 J

5 0
3 years ago
Pls help me with this question​
ryzh [129]

Answer:

16 ms2 is the answer for this question

8 0
4 years ago
Coherent light with wavelength 603 nm passes through two very narrow slits, and the interference pattern is observed on a screen
valina [46]

Answer:

λ  = 4.023 10⁻⁷ m

Explanation:

The double-slit interference phenomenon is described by

          d sin θ = (m + ½) λ          destructive interference

          d sin θ = m λ                  constructive interference

we can use trigonometry

         tan θ = y / L

how these experiments occur for small angles

         tan θ = sin θ/cos θ = sin θ

         sin θ = y / L

we substitute

        d y / L = (m + ½) λ        destructive interference

        d y / L = m λ                 constructive interference

with the expression for constructive interference we look for the separation of the slits

        d = m λ L / y

        d = 1 603 10⁻⁹ 3 /4.84 10⁻³

        d = 3.738 10⁻⁴ m

Now let's analyze the case where the distance for constructive and destructive interference occurs at the same point y = 4.84 mm = 4.84 10⁻³m

          d y / L = (m + ½)  λ

          λ = \frac{ d \ y}{L\  (m+ 1/2) }

the first strip is for m = 1  

let's calculate

         λ  = \frac{3.738 \ 10^{-4} 4.84 \ 10^{-3} }{ 3 \  ( 1 + 0.5) }

         λ  = 4.023 10⁻⁷ m

       

3 0
3 years ago
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