Amotorcyclist goes around a curve of 400-ft radius at a speed of 60.0 mph (note: stay
in b. e. to ft/s) (ignore the fact that a motorcyclist would lean
him/her upright for simplicity). what must the coefficient of friction between the tires and
the road be to make it through the turn? (reminder g= -32 ft/s) (ans. u= 0.605) think
about what rain or snow on the road would do to the coefficient of friction.

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.

frequency or wavelenth of em radiation in a vacuum

a. are