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3 years ago

What accepted idea was replaced by copernicus's new approach to the solar system?

Physics

1 answer:

Travka [436]3 years ago

4 0

Answer:

The geocentric model of Ptolemy in which the sun and other planets were believed to move round the Earth.

Explanation:

The Copernicus heliocentric model of the solar system was put forward by Nicolaus Copernicus and was published in 1543. The model proposed by Copernicus puts the Sun near the center of the Universe, motionless, with Earth and the other planets orbiting around the sun in circular paths, modified by epicycles, and at uniform speed. This is contrary to Ptolemy's geocentric solar system that puts the Earth at the center of the solar system, in which the sun and other planets were believed to move round the Earth.

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A machine that changes only the direction of a force has a mechanical advantage of

8090 [49]

Answer:

Explanation:

The word "only"= one!

5 0

3 years ago

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A water pipe is inclined 40.0° below the horizontal. The radius of the pipe at the upper end is 2.00 cm. If the gauge pressure a

aliya0001 [1]

Answer:

$P_2 = -1.9 \times 10^8 Pa$

Explanation:

As it is given that flow rate in the pipe is 20 cm^3/s

so we have

$Q = A_1v_1 = A_2v_2$

at the upper end the area is given as

$A_1 = \pi r_1^2$

$A_1 = \pi(0.02)^2 = 1.26 \times 10^{-3} cm^2$

Also at the other end

$A_2 = \pi r_2^2$

$A_2 = \pi(0.01)^2 = 0.314 \times 10^{-3} cm^2$

now the speed at two ends is given as

$v_1 = \frac{20}{1.26 \times 10^{-3}}$

$v_1 = 159.15 m/s$

$v_2 = \frac{20}{0.314 \times 10^{-3}}$

$v_2 = 637 m/s$

now by Bernoulli's theorem we have

$P_1 + \frac{1}{2}\rho v_1^2 + \rho g h_1 = P_2 + \frac{1}{2}\rho v_2^2 + \rho g h_2$

now we have

$0.112(1.013 \times 10^5) + \frac{1}{2}1000(159.15)^2 + 1000(9.81)(2.65sin40) = P_2 + \frac{1}{2}(1000)(637)^2 + 0$

Now we have

$P_2 = -1.9 \times 10^8 Pa$

4 0

3 years ago

Technician A says the parking brake cable adjustment should be performed before adjusting the rear brakes. Technician B says the

Firlakuza [10]

Answer:

Neither both are correct

Explanation:

The question involves the removal and installation procedure of cable for parking break. The answer for this could be found through the manual procedure for repairing parking break

Technician A is wrong because rear brakes should be adjusted before the parking cable adjustment is being made.

Technician B is wrong because the parking brake lever should be intact and secure at all clicks to allow maximum security. 15 clicks in this case should be the maximum number of clicks for the lever.

7 0

3 years ago

Suppose we replace both hover pucks with pucks that are the same size as the originals but twice as massive. Otherwise, we keep

andrey2020 [161]

Answer:

w = w₀ / 2 the angular velocity is half the initial value.

Explanation:

We can analyze this exercise as if we added another disk to obtain a disk with twice the mass, for which if the system is two disks, the angular tidal wave is conserved

initial instant.

L₀ = I₀ w₀

final moment

L_f = I w

the moment is preserved

L₀ = L_f

I₀ w₀ = I w

the moment of inertia of a disk is

I = ½ m R²

we substitute

½ m R² w₀ = ½ (2m) R² w

w = w₀ / 2

for the case of a disk with twice the mass, the angular velocity is half the initial value.

4 0

3 years ago

PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

skad [1K]

A & C

Explanation:

The combination of the earth's weak gravity and its closeness to the sun does not allow it to hold hydrogen and helium gases in its atmosphere. Its relative closeness to the sun means it is hot enough such that the helium and hydrogen molecules would have high kinetic energy. Remember that gravity acts strongly on larger masses, therefore it would require very strong gravity to have an influence on lighter gas molecules like hydrogen and helium let alone when they have a high kinetic energy. This means these molecules can easily escape the earth’s atmosphere into space.

Planets that are larger (meaning they have a stronger gravity) and farther from the sun (meaning these molecules won't have a very high kinetic energy) are able to hold these lighter gases in their atmosphere. Examples of such planets are Jupiter.

Learn More:

For more on gravity check out;

brainly.com/question/8844454

#LearnWithBraily

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3 years ago

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