While using a digital radiography system, suppose a radiographer uses exposure factors of 10 mas and 70 kvp with an 8: 1 grid for an ap shoulder radiograph with acceptable anatomical part penetration and detector element (del) exposure. if the radiographer desires to increase scatter absorption using a 12: 1 grid, what new exposure factors should be used to maintain the same del exposure?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

What is the relationship between the direction of motion of the balloon and the wind currents