What is the wavelength of the wave if its frequency is 12.0 hertz and its speed is 1.2 meters per second

Wavelength = (speed) / (frequency)

Wavelength = (1.2 m/s) / (12.0 /s)

Wavelength = 0.1 meter

0.1 m

Explanation:

Wave speed is equal to the product of frequency and wavelength

Solution:

v= f x lambda

Derive the equation to find wavelength

lambda = v/ f

= 1.2 m/s / 12 Hz

= 0.1 m

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 force on the thing and the distance the force moves the thing