Describe in words the direction of the compass needle as you
moved it around the bar...
Describe in words the direction of the compass needle as you
moved it around the bar magnet. How did the needle point behave at
opposite ends of the magnet? How did the distance of the compass to
magnet affect the compass needle’s behavior?
Recall the behavior of the compass needle as you explored the
magnetic field created by the coil. Indicate which two of the
following five statements are true. Select one or more: a. It is
not possible to decide which end of the coil is a magnetic North
when current is flowing through the coil. b. If I always move in
the direction indicated by the compass needle, thus following a
given field line, my path will trace a loop going...
A “friend” borrows your favorite compass and paints the entire
needle red. You discover this when you are lost in a cave and have
with you two flashlights, a few meters of wire, and (of course)
your physics textbook. How might you discover which end of your
compass needle is the north-seeking end?
A negative charge is moved in the direction of an E⃗E→
field line. Which of the following statements are true? The system
is the charge.
A negative charge is moved in the direction of an field line.
Which of the following statements are true? The system is the
charge.
The E⃗E→ field does positive work on the charge.
The E⃗E→ field does not do any work on the
charge.
The E⃗E→ field does negative work on the charge.
The amount...
Imagine a bar magnet, with North and South poles, moving in the
direction perpendicular to a single loop of wire on the horizontal
plane, as shown below. Show the directions of current
induced in the coil using arrows and explain why.
a. Magnet moving toward the coil.
b. Magnet moving away from the coil.
Describe the consequences of using a needle with a large gauge
number.
Explain the advantages of using a butterfly needle or winged
infusion set in blood collection.
What are the possible problems that a phlebotomist may encounter
when using a butterfly needle for blood collection?
Consider the apparatus shown below in which a conducting bar can be moved along two rails connected to a lightbulb. The whole system is immersed in a magnetic field of 0.480 T perpendicularly into the page. The vertical distance between the horizontal rails is 0.800 m. The resistance of the lightbulb is 41.2 Ω, assumed to beconstant. The bar and rails have negligible resistance. The bar is moved toward the right by a constant force of magnitude 0.600 N.(a) What...
SITUATION A: You just gave an injection to a patient,
and after withdrawing the needle, you notice that there is no
sharps container in the room. Action: Recap the needle using a
one-handed recapping technique. Why?
Situation B: You are getting ready to apply gloves and
notice that you have a cut on your finger.
Situation C: You accidentally get some blood on your
bare hands while removing your gloves.
Situation D: A part-time clinical medical assistant
was just hired....
A 0.63-m aluminum bar is held with its length parallel to the
east-west direction and dropped from a bridge. Just before the bar
hits the river below, its speed is 27 m/s, and the emf induced
across its length is 5.5 x 10-4 V. Assuming the
horizontal component of the Earth's magnetic field at the location
of the bar points directly north, (a)determine the
magnitude of the horizontal component of the Earth's magnetic
field, and (b) state whether the east...