Question

QUESTION 1 A cell phone has an output for the transmitted microwaves of 2.14 watts. What will be the intensity in watts/m² of the cell phone microwaves at a distance of 172 m from the phone? (Enter answer using scientific notation with two digits right of decimal; for example, 1.23e+5. Do not include unit in answer.) QUESTION 2 A cell phone has an output for the transmitted microwaves of 1.86 watts. What will be the electric field amplitude (Emax) in volts/m from the microwaves at your ear if you hold the cell phone 5.45 cm from your ear? (Enter answer as an integer. Do not include unit in answer.)

          QUESTION 1
A cell phone has an output for the transmitted microwaves of 2.14 watts. What will be the intensity in watts/m² of the cell
phone microwaves at a distance of 172 m from the phone? (Enter answer using scientific notation with two digits right of
decimal; for example, 1.23e+5. Do not include unit in answer.)
QUESTION 2
A cell phone has an output for the transmitted microwaves of 1.86 watts. What will be the electric field amplitude (Emax)
in volts/m from the microwaves at your ear if you hold the cell phone 5.45 cm from your ear? (Enter answer as an integer.
Do not include unit in answer.)

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QUESTION 1
A cell phone has an output for the transmitted microwaves of 2.14 watts. What will be the intensity in watts/m² of the cell
phone microwaves at a distance of 172 m from the phone? (Enter answer using scientific notation with two digits right of
decimal; for example, 1.23e+5. Do not include unit in answer.)
QUESTION 2
A cell phone has an output for the transmitted microwaves of 1.86 watts. What will be the electric field amplitude (Emax)
in volts/m from the microwaves at your ear if you hold the cell phone 5.45 cm from your ear? (Enter answer as an integer.
Do not include unit in answer.)

Added by Inmaculada G.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Kirsty Gledhill

Step 1

14 watts, we need to find the area at a distance of 172 m from the phone. The area of a sphere is given by the formula: Area = 4πr^2 Substituting the values, we have: Area = 4π(172)^2 Calculating this, we find: Area ≈ 371,019.7 m^2 Now we can calculate the Show more…

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A cell phone has an output for the transmitted microwaves of 2.14 watts. What will be the intensity in watts/m^2 of the cell phone microwaves at a distance of 172 m from the phone? (Enter answer using scientific notation with two digits right of decimal: for example, 1.23e+5. Do not include unit in answer.) QUESTION2: A cell phone has an output for the transmitted microwaves of 1.86 watts. What will be the electric field amplitude (Emax) in volts/m from the microwaves at your ear if you hold the cell phone 5.45 cm from your ear? (Enter answer as an integer. Do not include unit in answer.)

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