Amachine uses 1000 j of electric energy to raise a heavy mass, increasing its potential energy by 300 j. what is the efficiency of this process?

Efficiency of this process is 30 %.

Explanation:

It is given that,

Electric energy used by the machine,

The potential energy of the machine is increased,  

The efficiency of this machine is given by :

So, the efficiency of this process is 30 %. Hence, this is the required solution.                

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.