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3 years ago

Describe the velocity of the object shown by the graph .

Physics

2 answers:

mrs_skeptik [129]3 years ago

8 0

Answer:

parallel lines

Explanation:

because the line is going down

Elenna [48]3 years ago

5 0

It’s parlel lines not perbinduclar

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In a double-slit experiment, the third-order maximum for light of wavelength 510 nm is located 17 mm from the central bright spo

Marysya12 [62]

Answer:

14.9 mm

Explanation:

We know dsinθ = mλ where d = separating of slit, m = order of maximum = 3 and λ = wavelength = 510nm = 510 × 10⁻⁹ m

Also tanθ = L/D where L = distance of m order fringe from central bright spot = 17 mm = 0.017 m and D = distance of screen from slit = 1.6 m

So, sinθ = mλ/d

Since θ is small, sinθ ≅ tanθ

So,

mλ/d = L/D

d = mλD/L

Substituting the values of the variables into the equation, we have

d = 3 × 510 × 10⁻⁹ m × 1.6 m/0.017 m

d = 2448 × 10⁻⁹ m²/0.017 m

d = 144000 × 10⁻⁹ m

d = 1.44 × 10⁻⁴ m

d = 0.144 × 10⁻³ m

d = 0.144 mm

Now, for the second-order maximum, m' of the 670 nm wavelength of light,

m'λ'/d = L'/D where m' = order of maximum = 2, λ' = wavelength of light = 670 nm = 670 × 10⁻⁹ m, d = slit separation = 0.144 mm = 0.144 × 10⁻³ m, L' = distance of second order maximum from central bright spot and D = distance of screen from slit = 1.6m

So, L' = m'λ'D/d

So, substituting the values of the variables into the equation, we have

L' = 2 × 670 × 10⁻⁹ m × 1.6 m/0.144 × 10⁻³ m

L' = 2144 × 10⁻⁹ m²/0.144 × 10⁻³ m

L' = 14888.89 × 10⁻⁶ m

L' = 0.01488 m

L' ≅ 0.0149 m

L' = 14.9 mm

4 0

3 years ago

A flat, horizontal uniform plank is supported underneath by a triangular wedge which itself rests on flat, level ground. An obje

ser-zykov [4K]

Answer:C

Explanation:

Given

weight of object is equal to weight of object

Suppose weight of Planck is W

suppose weight is at distance of x cm from wedge

balancing Torque

$w\times x-w(\frac{L}{2}-x)=0$

$2x=\frac{L}{2}$

$x=\frac{L}{4}$

i.e. at a distance of 0.25L from the Left end

7 0

3 years ago

Read 2 more answers

A plate has an area of 1m square. It slide down an incline plane , having an angle of inclined 60° to horizontal, which a veloci

Solnce55 [7]

Answer:

$\mu =0.169704 Ns/m^2$

Explanation:

From the question we are told that

Area of plate $a=1m^2$

Angle of inclination $\theta=60 \textdegree$

Velocity $v=0.75m/s$

Thickness of oil $t=2mm$

Weight of plate $w=90N$

Generally the equation for shear force is mathematically given by

$F=mgsin45 \textdegree$

$F=90sin45 \textdegree$

$F=63.639N$

$F=\mu* \frac{v}{t}$

$F=\mu* \frac{0.75}{2*10^-^3}$

$\mu* \frac{0.75}{2*10^-^3}=63.639N$

$\mu =\frac{63.639}{375}$

Therefore viscosity is given by

$\mu =0.169704 Ns/m^2$

3 0

3 years ago

What is the definition of light of one year ?

Elodia [21]

Answer:

The definition of a light year is the distance a photon will travel in a year in a vaccume, like space.

8 0

3 years ago

Read 2 more answers

A hypothetical planet has a mass one-third of and a radius three times that of Earth. What is the acceleration due to gravity on

kap26 [50]

Answer:

F) The acceleration due to gravity is g/27

Explanation:

According to Newton gravitational law, the gravitational acceleration is directly proportional to the planet mass and inversely proportional to the square of distance.

Since our new planet has a mass of one-third of Earth's and radius 3 times of Earth's. This means the new planet is lighter and further away from the distance. This means g is first reduced by 3 due to smaller mass and then reduced by 9 due to square of 3 times the distance.

The gravitational acceleration on this new planet must be

$\frac{g/3}{3^2}$

$\frac{g}{27}$

So F) is the correct answer

6 0

3 years ago