Ask question

Ask question

All categories

3 years ago

14

Do i become a professional astrophysicist after getting PhD in Astrophysics ? Or will i be a postdoc research student i mean wil

l i be practicing under another researcher ? Will i get the correct salary just after finishing PhD ?

1 answer:

DaniilM [7]3 years ago

4 0

Most jobs in Astrophysics require a PhD. That's why that's what I'll be going for when I start my degree in it.

You might be interested in

OLga [1]

Answer:

Doppler Theory

Explanation:

it's a theory regarding the change in wave frequency during the relative motion between a wave source and its observer.

6 0

2 years ago

two clear, colorless liquids are poured together. A bright yellow solid forms. What physical properties have changed?

jek_recluse [69]

Change in state(from liquid to solid) and change in colour I believe.

3 0

3 years ago

11. Will the cube in#10 float in water? Will it float in benzene?

densk [106]

Where is the cube I don't see any picture?

5 0

3 years ago

An ac generator with Em = 223 V and operating at 399 Hz causes oscillations in a series RLC circuit having R = 222 Ω, L = 147 mH

Doss [256]

Answer:

Xc= 17.267 Ω, Z= 415.5 Ω, I= 0.537 A

Explanation:

Em = 223 V

f= 300 Hz, R = 222 Ω, L = 147 mH, C = 23.1 μF

a)

Capacitive reactance = Xc=?

Xc= $\frac{1}{2\pi fC}$

Xc=1/2pi *399*23.1*10^-6

Xc= 17.267 Ω

b).

Z= $\sqrt{ R^2 + (Xl - Xc)^2}$

Xl= 2π * f * L

Xl= 2π * 399 * 147 * $10^{-3}$

Xl= 368.5 Ω

Z= $\sqrt{ R^2 + (Xl - Xc)^2}$ = $\sqrt{222^2 + (368.5 - 17.267)^2}$

Z= 415.5 Ω

c).

Current:

I= V / Z= Em / Z

I= 223/415.5

I= 0.537 A

3 0

3 years ago

If the force on a spring is 2 N and it stretched 0.5 m, what is the spring constant?

andriy [413]

<h2>It solved by the Hooke's law states F=kx</h2>

answer is

<h2>0.4n/m</h2>

6 0

3 years ago