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What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.41015Hz Express your answer in joules to three significant figures.?
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What is the unit used to express frequency?
Hertz
What unit is used to express the frequency of a wave?
hertz
How centripetal acceleration express in terms of time period and frequency?
Here are two commonly used formulae for centripetal acceleration: a = v2/r a = omega2r The second seems closest to what you are looking for. Omega (lower case omega) is the angular speed, in radians/second. It is equal to the frequency (revolutions/second) times (2 x pi). Thus, you can replace: a = (2 x pi x f)2 x r = 4pi2f2r
What is the unit used to express electric current called?
A, Amps or amperes. an ampere is equal to one coulomb/second (basically a LARGE set number of electrons flowing through a cross section per second) the cross section could be anything, a wire, an arm... akin to the cross section of a watermain.
Is the kelvin used to express length in SI?
No
What is the unit used to express frequency?
Hertz
What unit is used to express the frequency of a wave?
hertz
What word is used to express frequency?
kHZ or HZ or MHZ
How to express 27000000 using 1 significant figure?
2 significant figures.
Express 49 to 1 Significant figure?
50
How do you express 323 in 2 significant figures?
320
How many protons and electrons are in oxygen 2- express answer in integers?
O2- ion has a total of 10 electrons.
How do you Express 6.21 using 1 significant figure?
6.21 with one significant figure is just 6
How do you express 1600 mL as two significant figures?
1600
How would you express 3.0107305 to 3 significant figures?
It is 3.01
How do you express 12345000 with three significant figures?
It is 12300000
What was the most significant invention of 1558 - 1603?
The print express.
