¿A qué rapidez deberá acercarse una fuente sonora, cuya frecuencia de emisión en reposo es de 420 Hz, para que un

receptor escuche una frecuencia de 500 Hz?

i need my girl back keith uses i need my girl back

explanation:

my daughter rae

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

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.