Apump is driven by a 2-kw motor with water at 150 kpa, 10 cesius entering. find the maximum water flow rate you can get with an exit pressure of 1 mpa and negligible kinetic energies. the exit flow goes through a small hole in a spray nozzle out to the atmosphere at 100 kpa. find the spray velocity.

42.4m/s

Explanation:

To develop the problem it is necessary to apply the concepts related to thermodynamic work and Bernoulli's principle in which the behavior is described of a liquid moving along a stream.

The work of an incomprehensible liquid is given by the equation,

Where,

= Mass flow

= Specific Volumen

P = Pressure

Our values are given by,

= 2kW

Table 1 for saturated water in 10°C

We need to find the mass flow, then re-arrange for

To find the Spray velocity, we apply Bernoulli equation, because at the Nozzle there is not Work or Heat transfer related. Then,

Therefore the spray velocity is 42.4m/s

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

hope this : )

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.