A horizontal spring has a mass attached that can move with negligible friction. You stretch the spring and release the mass from rest. For the resulting motion, which of the following statements are true?A) When the spring is (momentarily) fully compressed, K has its largest value. B) When the spring (momentarily) has its relaxed length, U has its largest value. C) When the spring (momentarily) has its relaxed length, K has its smallest value. D) When K is large, U is small, and vice versa. E) When K is large, U is large, and vice versa.

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.

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !

momentum of soft ball three times less than baskey ball