3 times 108 m s To within 7 parts in 10 000 the value of 3 108 3 10 8 is fine Unless your calculations require more accuracy then it s a perfectly reasonable statement to say the speed of light is 3 108 ms 1 3 10 8 m s 1 You could do most physics with this value with negligible error
Relationship needed Speed distance time Given speed of light 3 00x10 8 m s distance 1 47x10 8 km Asked time min 1 Rearrange the equation to solve for time 2 Convert the distance to m using dimensional analysis so that units cancel 3 Solve for time 4 Convert time from s min Step 1 Enter the expression you want to evaluate The Math Calculator will evaluate your problem down to a final solution You can also add subtraction multiply and divide and complete any arithmetic you need Step 2 Click the blue arrow to
3 times 108 m s
3 times 108 m s
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Speed of light in S I system is 3 x 108 m s In a new system unit of length is a km and unit of time is b second Then speed of light in new system of unit is 1 103 Speed of light 3 00 x 10 8 m s Use the conversion 1 mile 1610 m The problem can be solved using the conversion of length and time units Let us consider 1 km 1000 m 1 mile 1610 m 1 hour 60 minutes 1 minute 60 seconds
begingroup The speed of light depends on the units we choose there is nothing particularly interesting about 299 792 458 m s In another units it could have been 3x10 8 but not in SI units endgroup C lambda nu c 3 00xx10 8 m s the speed of light in a vacuum lambda wavelength in meters nu frequency in Hertz Hz or 1 s or s 1 So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light
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Solution The correct option is C 7 5 1014 Hz 6 1016 Hz We know if f frequency wave length and v speed of light in vacuum then v f or f v So for maximum frequency fmax v min Substituting the given data fmax 3 108 50 10 10 6 1016 Hz and minimum frequency fmin v max Substituting the given data How to calculate wavelength It s easy Just use our wavelength calculator in the following way Determine the frequency of the wave For example f 10 MHz This frequency belongs to the radio waves spectrum Choose the velocity of the wave As a default our calculator uses a value of 299 792 458 m s the speed of light propagating
Multiplication often denoted by the cross symbol by a point by juxtaposition or on computers by an asterisk is one of the four elementary mathematical operations of arithmetic with the others being addition subtraction and division Calculator to give out the multiplication result of two whole numbers Step 1 Find the distance between the Sun and Earth From the previous question we know that the distance between the Sun and Earth is approximately 1 50 x 10 11 meters Step 2 Use the formula for time which is time distance speed Step 3 Plug in the values for distance and speed of light
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3 times 108 m s - C lambda nu c 3 00xx10 8 m s the speed of light in a vacuum lambda wavelength in meters nu frequency in Hertz Hz or 1 s or s 1 So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light