Camels require very little water because they are able to tolerate relatively large changes in their body temperature. while humans keep their body temperatures constant to within one or two celsius degrees, a dehydrated camel permits its body temperature to drop to 34.0°c overnight and rise to 40.0°c during the day. to see how effective this mechanism is for saving water, calculate how many liters of water a 400 kg camel would have to drink if it attempted to keep its body temperature at a constant 34.0°c by evaporation of sweat during the day (12 hours) instead of letting it rise to 40.0 °c. (note: the specific heat of a camel or other mammal is about the same as that of a typical human, 3480 j/(kg⋅k). the heat of vaporization of water at 34°c is 2.42 × 106 j/

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.

probably not if net force is zero