Question

Express the following quantities in scientific notation:
700m __________
0.00054kg _______
4500000m _________
How many seconds are in 6.5 hours?(show T-chart)

Answer 1

To express numbers in scientific notation, place the decimal point after the first digit, then add 10^x as appropriate (or as E notation)
700 m = 7.00 x 10² m or 7.00E2 m.
0.00054 kg = 5.4E-4 kg

Answer 2

thanks what about how many seconds in 6.5 hrs

Answer 3

I have no idea what a T chart is.
But you know there are 60 min in an hour and 60 sec in a minute. That's all you need to convert.