A sinusoidally oscillating current I ( t ) I(t) with an amplitude of 2.55 A 2.55 A and a frequency of 255 cycles per second 255 cycles per second is carried by a long, straight wire. A rectangular loop of copper wire with dimensions b = 72.2 cm b=72.2 cm by c = 32.5 cm c=32.5 cm is located a = 80.2 cm a=80.2 cm from the straight wire, and is coplanar with it. Calculate the average power P avg Pavg dissipated by the loop if its resistance is 44.3 Ω .

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Explanation:

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.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19