physics Flashcards

1
Q

Amount of fuel consumed by a typical rocket

A

10000 kg/s

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2
Q

Amount of burnt gases ejected by a typical rocket

A

4000ms
-1

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3
Q

Moon

A

2.4

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4
Q

earth

A

11.2

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5
Q

Radius of the earth

A

6400

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6
Q

Orbital velocity to put a satellite into orbit around earth

A

7.9

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7
Q

Height of a geostationary satellite above the equator

A

36000

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8
Q

potentiometer

A

comparing voltages

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9
Q

water waves

A

progressive
transverse
longitudinal

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10
Q

magnetic flux

A

scalar quantity

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11
Q

power loss in real transformers

A

due to eddy currents

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12
Q

ac generator

A

similar to motor

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13
Q

IE of hydrogen

A

13.6 eV

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14
Q

after beta transmission thorium is transformed

A

protactinium

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15
Q

Na-24

A

for study of blood

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16
Q

Tuning a radio

A

example of electrical resonance

17
Q

helium

A

active/lasing medium in laser tube

18
Q

mechanical waves are not generated by

A

electric and magnetic feilds

19
Q

stopping potential

20
Q

potential divider

A

gives continuously varying voltage

21
Q

terminal p.d>emf

A

battery is being charged

22
Q

magnetic flux

A

MFL passing through a surface

23
Q

lasers

A

by stimulated emission

24
Q

angle 45 degrees

A

Ek=minimun
Ek=cos”2Q

25
C-14 decays a beta particle
and becomes N-14
26
gamma photon enter nucleus
excites nucleas
27
sensitivity of potentiometer will be increased by
increasing the length of potentiometer wire
28
emf=vBL
29
if proton, electron, neutron have same v
alpha shortest wavelengh
30
stopping potential
potential that causes electron to vanish
31
speed of e in first bohrs orbit
2.19x10'6
32
ripple factor of full wave rectifier
0.482
33
adiabatic expansion
change in internal energy: negative
34
isochoric
w.d is zero
35
bound state e has
dual nature