Physics, 22.06.2019 21:30, Inrimid3619

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.

Answers: 1

Show answers

Answers

Cold temperature can't "flow" into a warmer object, in this case, the person's hand. The heat energy of the hand gets transferred to the colder object, the ice.

answered: SkinnestXOXO

In this case ice is not transferring cold to the person but person is transferring heat to the ice.

Explanation:

A person touches a large chunk of ice with his hand at that time their is difference of temperature between person's hand and chunk of ice. Person's hand has higher temperature than chunk of ice.

We know that heat transfer from higher temperature to lower temperature. In this case also heat is transferred from person's hand to chunk of ice. In this way chunk of ice will start melting and man's hand start getting cold due to transfer of heat.

In this case ice is not transferring cold to the person but person is transferring heat to the ice.

answered: Guest

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.

$_a^z\textrm{x}\rightarrow _{a-2}^{z-4}+_2^4\alpha$

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.

$_a^z\textrm{x}+_{-1}^0\textrm{e}\rightarrow _{z-1}^a\textrm{y}$

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 $\gamma -radiations$ . this process does not change the mass number.

$_a^z\textrm{x}^*\rightarrow _a^z\textrm{x}+_0^0\gamma$

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 $\beta ^+$ -decay. in this the mass number remains same.

$_a^z\textrm{x}\rightarrow _{z-1}^a\textrm{y}+_{+1}^0e$

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

answered: Guest

Ithink the answers is b i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

Other questions on the subject: Physics

Physics, 22.06.2019 11:10, alexisbarry7495

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Answers: 3

continue

Physics, 22.06.2019 11:40, johanperezpere51

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?

Answers: 3

continue

Physics, 22.06.2019 14:30, shwubblz

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

Answers: 3

continue

Physics, 22.06.2019 15:00, tinagibbs98

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

Answers: 3

continue

Do you know the correct answer?

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain...