An object is moving with a constant acceleration on a straight road. The equation between velocity and time is found to be v=2 +5t, where v is the velocity in metres per second and t is time . a. Plot the graph between v and t.
b. Find acceleration at
i. t=1 second
ii. t= 2 seconds

are you like autistic or something?

xd

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.

real, smaller and upside-down.   so the answer should be b.

multiply 2kg by latent heat of vap