Im stuck on a couple of questions for maths. Heres the questions.
1. A cyclotron produces high speed particles. A particle moving inside cyclotron takes 9.5 x 10 to the power of negative 10. seconds to travel 2.1 10 to the power of negative 1 meters. Calculate the speed of the particle in meters per second (m/s)
2. A planet takes 88 days to travel round the sun. The path of the planet is a cycle is a circle with a diameter of 3.4 x 10 to the power of 8 kilometers. Find the speed of the planet as it travels round the sun. Give your answer in km per hour (km/hr), correct to 2 sig figs.
3. The mass of water on the earth's surface is 1.54 x 10 (to the power of 19) tonnes. The total mass of the earth is 5.84 x 10(to the power of 22) tonnes. Express the mass of water as a percentage of the total mass of the earth giving your answer in scientific notation correct to 2 sig figs.
I dont just want you to tell me the answer, that would be kind of cheating and I wouldnt learn anything from it. Could you please tell me how to do this? I asked my teacher and he said I could do the work :( he said do what you can but I cant do any of this. So any help will be most useful.
thanks.
Recent Questions Education & School
1. 4.50 m/s
2. 505492.42 km/h
3. 8.99x10 5
im doing scientic mnotation at the moment im not sure what this question would be classified under in the chapter but we have this question: 2 to the power of 2 over 3 to the power of of 2. we have to write it as a fraction or a whole number. can you give me all the different methods you can think of please!!!xxx
What is the answer to this scientifical math problem?1. 4.50 m/s
working:
T= 0.00000000095 s
D= 0.02110 m
S= D

T
S= 0.02110

0.00000000095
S= 4.50 m/s
2. 505492.42 km/h
working: T= 2112 hours
D= 3.14x 340000000
= 1067600000km
S= D
_
T
S= 1067600000
___
2112
S= 505492.42
3. 8.99x 10 (5)%
working:
mass of earth= 58400000000000000000000
mass of water= 15400000000000000000
% mass of water= 584000
___ x154 = 899360
100 = 8.99x 10 (5)%