Questioncora lies in a tanning bed getting a tan suppose

Assignment Help Physics

Reference no: EM13349671

Question

Cora lies in a tanning bed getting a tan. Suppose that AS = 0.79 m2 of her skin is exposed to the light from the ultraviolet (UV) lamps. The UV lamps produce light with an average energy density of uT = 5 x 10-6 J / m3. She lies in the bed for tT = 30 minutes.

Randomized Variables
AS = 0.79 m2
UT = 5 x 10-6 J / m3
tT = 30 minutes

Part (a) compute the average intensity ST in W / m2 of the UV light.

Part (b) supposes that Cora’s skin absorbs 100% of the energy of the UV light. Calculate how much energy UT in J her skin absorbs during time she lies in the bed.

Part (c) computes the rms electric field ET in N/C of UV light.

Part (d) computes the rms magnetic field BT in T of the UV light.

An antenna with power P = 1.4 x 103 W is radiating spherical electromagnetic waves. Consider a place which is d = 190 m away from the antenna.

Randomized Variables
P = 1.4 x 103 W
d = 190 m

1. Express I in terms of the electric field magnitude Emax, and the speed of light c.

2. Find Emax2 in terms of P, d, and c.

3. Solve for numerical value of Emax in V/m.

Reference no: EM13349671

Questions Cloud

Question 1united products was formed 46 years ago by the : question 1united products was formed 46 years ago by the merger of two large commercial organizations bulk foods and

Question 1the experience of many tourism areas in the world : question 1the experience of many tourism areas in the world has established that on a long term basis the planned

Questiona person bending forward to lift a load with his : questiona person bending forward to lift a load with his back rather than with his knees can be injured by large forces

Question1drop solid sphere of aluminium into a bucket of : question1drop solid sphere of aluminium into a bucket of water sitting on ground. the buoyant force equals weight of

Questioncora lies in a tanning bed getting a tan suppose : questioncora lies in a tanning bed getting a tan. suppose that as 0.79 m2 of her skin is exposed to the light from the

Question 1tourism gives rise to different advantages and : question 1tourism gives rise to different advantages and costs and the nature and scope of economic impacts tend to

Questionin an x-ray machine electrons are accelerated and : questionin an x-ray machine electrons are accelerated and then fired so that they are incident on a metal target. which

Question1a hiker makes four straight-line walks a 20 km at : question1a hiker makes four straight-line walks a 20 km at 274o b 12km at 48onbspc 33 km at 150onbspd 30km at 20onbspin

Question1in a ldquorotor-riderdquo at a carnival people : question1in a ldquorotor-riderdquo at a carnival people rotate in a vertical cylindrically wallednbspldquoroom.rdquo if

User Account

All Pages