He diagram shows the Earth rotating on it's axis. The two stars show different locations on the surface... How long does it take for the locations to rotate completely around the Earth and get back to the same spots? * About 60 minutes (1 hour)
About 24 hours (1 day)
About 1 month (28 days).
About 365 days (1 year)
About 10 years (1 decade)

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

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answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.