A typical wall outlet voltage in the United States is 120 volts. Personal MP3 players require much smaller voltages, typically 487.0 mV 487.0 mV . If the number of turns in the primary coil is 2464 2464 , calculate the number of turns on the secondary coil of the adapter transformer.

Number of turns on the secondary coil of the adapter transformer is 10.

Explanation:

For a transformer,

where is the voltage induced in the secondary coil

            is the voltage in the primary coil

          is the number of turns of secondary coil

          is the number of turns of primary coil

From the given question,

    =

⇒     =

            = 9.999733

  ∴   = 10 turns

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

the assestment will probley apele with cause and effect