Solar panels convert light energy from sunlight into electrical energy. what material is most likely used in solar panels, and why?
a.) a nonmetal is used because it is a semiconductor and can become more conductive when more light shines on it.
b.) a metalloid is used because it is a good conductor but can become less conductive when more light shines on it.
c.) a metalloid is used because it is a semiconductor and can become more conductive when more light shines on it.
d.) a nonmetal is used because it is a poor conductor but can become more conductive when more light shines on it.

which properties are characteristic of metalloids?
a.) high electrical conductivity and a high melting point
b.) low electrical conductivity and a low melting point
c.) intermediate conductivity and a high melting point
d.) intermediate conductivity and a low melting point

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.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.