Answer:
Explanation:
As we know by energy conservation that change in gravitational potential energy of the system = change in kinetic energy of the two ball
So here we can say
Also since there is no external force on the system of two masses so here total momentum of the two balls will remains conserved
now we have
Answer:
its b
Explanation:
cause im in 7th grade ive been asked the same question
Answer:
I don't know the exact answer but I think this is it.
The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable. The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.
Answer:
Wrapping the bar with a coil of wire that has an electric current.
Explanation:
To cause an iron bar to start generating a magnetic field, wrap the bar with a coil that has an electric current.
- This process is known as making magnetics using an electric current.
- There is an interaction between electric and magnetic fields.
- Electrical current can be induced by magnetic fields and magnetism can be induced by electric currents.
Wrapping the bar with a coil of wire that has electric current can cause an iron bar to start producing magnetic fields. This way, the iron bar becomes a magnet.
