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d1i1m1o1n [39]
3 years ago
8

PLEASE HELP ME

Physics
1 answer:
lesya [120]3 years ago
6 0

Answer:

football

Explanation:

it is played on zig-zay way/form

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For two different inertial frames of reference would acceleration and change in velocity be different? How would energy be affec
morpeh [17]

Answer and Explanation:

The inertial reference frame is one with constant velocity or non-accelerated frame of reference.

The value of acceleration and velocity change will vary in the two frames and will not be same.

As in case, we observe the acceleration and velocity of a moving train from the platform and the one observed in the train itself will be different.

In case of energy, it is dependent on the frame of reference but the energy change is independent of the frame of reference.

7 0
4 years ago
Calculate the gravitational potential energy of the interacting pair of the Earth and a 4 kg block sitting on the surface of the
STALIN [3.7K]

Answer:

- 2.425 x 10^5 J

Explanation:

The gravitational potential energy between earth and the bock is given by

U=-G\frac{Mm}{r}

Where, G is the universal gravitational constant = 6.67 x 10^-11 Nm^2/kg^2

M is the mass of earth = 5.8 x 10^24 kg

m is the mass of block = 4 kg

r be the radius of earth = 6380 km = 6380 x 10^3 m

by substituting the values in the above expression, we get

U=-6.67\times10^{-11}\frac{5.8\times 10^{24}\times 4}{6380\times 10^{3}}

U = - 2.425 x 10^5 J

5 0
3 years ago
Read 2 more answers
In 2006, there were 3,858 oil and gas platforms in the Gulf of Mexico. Oil platforms are used to extract oil and natural gas fro
VashaNatasha [74]

Answer:

Is a)

Explanation: i took the test so dw

5 0
4 years ago
Which part of Earth Is hotter ? Which part is colder ? Why ?
LekaFEV [45]

Explanation:

Dasht-e Loot, Iran is the hottest,, and the coldest is the East Antarctic Plateau. The reason that part of Iran is the hottest is because it's near the Arabian deserts, and as you know the deserts can be pretty hot. The coldest part of the Earth is that cold because it doesn't get as much sunlight, the reason for that is because they don't get any direct sunlight.

5 0
4 years ago
Three polarizing filters are stacked, with the polarizing axis ofthe second and third filters at angles of 22.2^\circ and 68.0^\
andreev551 [17]

Answer:

I₂ = 25.4 W

Explanation:

Polarization problems can be solved with the malus law

     I = I₀ cos² θ

Let's apply this formula to find the intendant intensity (Gone)

Second and third polarizer, at an angle between them is

    θ₂ = 68.0-22.2 = 45.8º

    I = I₂ cos² θ₂

    I₂ = I / cos₂ θ₂

    I₂ = 75.5 / cos² 45.8

    I₂ = 155.3 W

We repeat for First and second polarizer

   I₂ = I₁ cos² θ₁

   I₁ = I₂ / cos² θ₁

   I₁ = 155.3 / cos² 22.2

   I₁ = 181.2 W

Now we analyze the first polarizer with the incident light is not polarized only half of the light for the first polarized

    I₁ = I₀ / 2

   I₀ = 2 I₁

   I₀ = 2 181.2

   I₀ = 362.4 W

Now we remove the second polarizer the intensity that reaches the third polarizer is

    I₁ = 181.2 W

The intensity at the exit is

    I₂ = I₁ cos² θ₂

    I₂ = 181.2 cos² 68.0

   I₂ = 25.4 W

8 0
4 years ago
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