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Fantom [35]
3 years ago
13

How does the Milky Way galaxy compare to most others, according to Shapely and Oort? (

Physics
2 answers:
Mandarinka [93]3 years ago
8 0
The Milky Way is a spiral and most smaller galaxies are large clouds. We also have a supermassive black hole in our core, most spiral galaxies have one.
KATRIN_1 [288]3 years ago
8 0

Shapley and Oort put the final indignation to the Earth centered theory, by saying that we lived in a fairly typical galaxy amongst hundreds of millions of other.

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What is the correct definition of amplitude
Brut [27]

Answer:

maximum extent of a vibration or oscillation, measured from the position of equilibrium.

7 0
3 years ago
Read 2 more answers
Derive an expression for the de Broglie wavelength of a thermal neutron and calculate its value at the temperature T = 290 K. Th
Vladimir [108]

Answer:

1.479 A

Explanation:

Expression for de Broglie wave length

λ = \frac{h}{\left ( 2mKE \right )^{.5}}

Where m is mass of neutron ,h is plank constant and KE is kinetic energy of

proton.

Kinetic Energy ( KE) = 3 / 2 kT

=1.5 X 1.38 X 10⁻²³ X 290 = 600.3 X 10⁻²³ J

\sqrt{2mKE} = \sqrt{2\times1.67\times10^{-27}\times600.3\times10^{-23}}

44.777 x 10⁻²⁵

λ = \frac{6.626\times10^{-34}}{44.777\times10^{-25}}

=1.479 A.

7 0
3 years ago
If it takes 35J to lift up an object to some height, then how much gravitational potential energy will that object have?
uysha [10]
35j because if it takes so much to lift it’s that much pullin down
8 0
3 years ago
The current in the wires of a circuit is 120.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled (
skad [1K]

Answer:

Its new current will be 240.0milliAmps

Explanation:

According to ohms law,

V = IR

V is the supply voltage in a circuit

I is the current

R is the resistance

If the current in the wires of a circuit is 120.0 milliAmps, the voltage will be:

V1 = 120R1

R1 = V1/120...(1)

If the voltage impressed across the ends of the circuit were doubled (with no change in its resistance),

V2 = 2V1

V2 = IR2

2V1 = IR2

R2 = 2V1/I ... (2)

Since there are no changes in resistance

R1 = R2

Equating 1 and 2, we have:

V1/120 = 2V1/I

1/120 = 2/I

Cross multiplying

I = 2×120

I = 240milliAmps

7 0
3 years ago
Hour, a bicyclist travels 10 km north and then 6 km south. What is the average
liberstina [14]

Answer:

16km/hr

Explanation:

Total distance travelled= 10km+6km

Time taken= 1 hour

As we know that,

Velocity = distance/time

So,

Velocity= 16km/hr

8 0
4 years ago
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