will be If an operator 10 m from a small source is exposed to 1.4 units...
5) An individual is 50 cm away from a radiation source and is exposed to 1000 Roentgens of radiation (not good). Assuming exposure to 111.1 Roentgens is the maximum dose that an individual may be exposed to without major adverse effects, what is the minimum safe distance from the radiation source? (4
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 51.0 dB. a) What is the intensity of the sound at A? I got I = 1.26×10−7 W/m2 and it is correct. b)How far from the source must you go so that the intensity is one-fourth of what it was at A? I got R1 R1 = 6.40 m and it is correct. c) How far must you...
The intensity of sound radiated from a small source is measured at a point 50meters from the source and found to be 2.0u W/m^2. What will the intensity at a point that is 200m further from the source?
Question 7 At 10 cm, a nuclear worker has been exposed to a Cs-gamma source. The activity of the source is 1Сi and the conversion factor is Ce3.7 pSv.cm-/%, (1pSv=10-12Sv). do your calculation and circle the correct answer from the list below for: The worker's dose equivalent rate H in milliSievert and, The worker's total dose equivalent H, in millisievert, if he was exposed to the source for 10 minutes are 1. H = 1.09 mSv/second, H = 653.9 mSv...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
The intensity from a point source of waves at a distance of 1 m from the source is 10 W/m^2. At a distance of 10 m the intensity is 1000 W/m^2 100 W/m^2 1 W/m^2 0.1 W/m^2 0.01 W/m^2
The intensity of an unshielded I-131 source is 32mR/hr. If the source is put into a lead shield 30mm thick what would be the intensity on the outside of the shield? Assume your distance from the source has not changed. The HVL of lead for I-131 is 0.178cm. A technician is in an area for 10 minutes and the reading on an exposure meter is 5mR/hr. Determine the actual radiation dose received by the technician. The technician should not receive...
Someone plans to float a small, totally absorbing sphere 0.532 m above an isotropic point source of light, so that the upward radiation force from the light matches the downward gravitational force on the sphere. The sphere's density is 20.8 g/cm3, and its radius is 2.34 mm. (a) What power would be required of the light source? (b) Even if such a source were made, would the support of the sphere be unstable? Assume that the speed of light is...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 W (a) Find the intensity 10.7 m from the source. 0.76 Your response differs from the correct answer by more than 100%, w/m? (b) Find the intensity level in decibels at that distance. 118.8 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation Cary out all inter to...
The intensity of a light source at a distance is directly
proportional to the strength of the source and inversely
proportional to the square of the distance from the source. Two
light sources, one five times as strong as the other, are 9 m
apart. At what point on the line segment joining the sources is the
intensity the weakest? Write an equation representing the
intensity, I, at a distance, x, from the weaker lightbulb, and with
k as the...