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Svetllana [295]
3 years ago
5

Advantages of hubble law

Physics
1 answer:
Tatiana [17]3 years ago
7 0
The first huge advantage of the Hubble law is the ability to see objects without the obscuration of the atmosphere, the atmosphere distorts and obscures a great deal of light from distant and dim objects. By placing the telescope outside the atmosphere this problem is eliminated, also the Hubble being space based can observe phenomena that might be completely missed by land based telescopes because they occur during daylight hours at the land based location. There is no daytime obscuration of the stars from space.
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Differenciate between fundamentals quantities and derived quantities
REY [17]

Answer:

Fundamental quantities are the base quantities of a unit system, and they are defined independent of the other...

• Derived quantities are based on fundamental quantities, and they can be given in terms of fundamental quantities.

• In SI units, derived units are often given names of people such as Newton and Joule.

Explanation:

3 0
3 years ago
Read 2 more answers
A copper wire of length 16 cm is in a magnetic field of 0.19 T. If it has a mass of 9.0 g, what is the minimum current through t
Sergeeva-Olga [200]

Answer:

2.9 A

Explanation:

L = 16 cm = 0.16 m

B = 0.19 T

m = 9 g = 0.009 kg

Let the minimum current be i.

Magnetic force is balanced by the gravitational force

B x i x L = m x g

0.19 x i x 0.16 = 0.009 x 9.8

i = 2.9 A

7 0
3 years ago
Why the watt is called derived unit ?​
Yuri [45]

Answer:

It is because it is a unit of Power(which is a derived quantity)

4 0
3 years ago
A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater's acceleration?
lutik1710 [3]

Answer:

Explanation:

mass (m) = 50 kg

Force (F) = 200 N

Acceleration (a)= ?

WE know

F = m * a

200 = 50 * a

a = 200 / 50

a = 4 m/s²

Hope it will help :)

3 0
2 years ago
If the speed is c=3.00•80 m/s and the frequency is 1030kHz=1030•30 Hz what’s the wavelength
Nana76 [90]

Answer:0.3meters

Explanation:

wavelength=velocity ➗ frequency

wavelength=300.80 ➗ 1030.80

Wavelength=0.3m

8 0
3 years ago
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