subject
Physics, 20.10.2019 06:00 hanjonez

A. s.a. will be marked as ! 14 !
dave and kirk are learning about electromagnetic waves in class. dave says that gamma rays are the most dangerous because they come from outer space. kirk disagrees. kirk says that gamma rays are not as dangerous as ultraviolet waves since they cause sunburn. who is right and why?
question 12 options:

neither are right because x-rays have radiation and are the most dangerous. that is why you have to wear a lead vest when you get dental x-rays.

dave is partly right in his answer that gamma rays are the most dangerous, but it is because of their frequency and wavelength, not where they come from.

neither are right. microwaves are the most dangerous because they have the longest wavelength and the biggest frequency. microwave kill all living things.

kirk is right. ultraviolet waves cause sunburn and that can be very dangerous. too much sun can cause skin cancer.

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 22.06.2019 16:00, kalbaugh
Which composition of water moves to begin a deepwater current?
Answers: 2
image
Physics, 22.06.2019 17:00, StupidFatChipmunk
What equation is used to calculate the weight of an object on a plant ?
Answers: 1
image
Physics, 22.06.2019 18:20, shongmadi77
Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?
Answers: 1
image
Physics, 22.06.2019 18:50, rurbanok12
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
You know the right answer?
A. s.a. will be marked as ! 14 !
dave and kirk are learning about electromagnetic waves in...

Questions in other subjects:

Konu
Chemistry, 15.12.2019 06:31
Konu
Mathematics, 15.12.2019 06:31