Three significant digits.
3 of them.
503
Yes - zeros in-between significant digits are significant.
503
One.
It has 4 significant digits but only one value.
3. trailing zeros give scale but are not significant as values of accuracy
wht is the significant of RMS VALUES OF A PARTICULAR WAVE/
There are 10 millimetres in one centimetre. Therefore, 503 millimetres is equal to 503/10 = 50.3 centimetres.
i knot in mph is 0.868976242 knots so 503 mph is 437,095049726 knots
503 kilos is 1,109 pounds.
Transmitted
503