Question
In: Physics
A person is wearing a thin bracelet on a wrist that has a diameter of the...
A person is wearing a thin bracelet on a wrist that has a diameter of the bracelet, 6.2cm, and the diameter of the wire is 2.0mm. The person moves the position of the hand whilst the bracelet is attached on the wrist from a position of very low magnetic field strength into the MRI scanner's 2.00T field with the hand pointing towards in the direction of the magnetic field.
a) Find the average emf induced in the gold bracelet, assuming it takes 0.250s to move it into the field.
b) Would the temperature of the bracelet change? Explain with calculations.
Assume the resistivity of Gold is 2.4x10^-8 Ωm, density 19.3 gcm-3 and specific heat as 0.13 kJkg^-1 K^-1
Solutions
genius_generous answered 2 years agoRelated Solutions
A compound thin cyclinder has a common diameter of 100 mm and the inner cylinder has...
A compound thin cyclinder has a common diameter of 100 mm and
the inner cylinder has a thickness of 2.5 mm. The radial pressure
between the two cylinders is 200 kPa and the difference between the
two common diameters before shrinkage was 4.305×10-3 mm. Determine
(a) the thickness of the outer cylinder (b) the resultant hoop
stresses in both cylinders if the compound cylinder is subjected to
an internal pressure of 180 kPa. (E = 200 GPa)
You notice a person is wearing a violet shirt. Answer the following questions. A) What is...
You notice a person is wearing a violet shirt. Answer the
following questions.
A) What is the frequency of the light your eyes are observing
assuming the prominent wavelength you are observing is 400 nm?
B) What is the frequency range of the light being absorbed by
the clothing material?
C) What is the color associated with the light absorbed by the
clothing?
D) If the intensity of light absorbed by the clothing is 1,399
lumens, and the light observed...
A thin circular sheet of glass with a diameter 5 meters is rubbed with a cloth...
A thin circular sheet of glass with a diameter 5 meters is
rubbed with a cloth on one surface and becomes charged uniformly. A
chloride ion (a chlorine atom which has gained one extra electron)
passes near the glass sheet. When the chloride ion is near the
center of the sheet, at a location 0.8 mm from the sheet, it
experiences an electric force of 8e-15 N, toward the glass sheet.
In this problem, use the value ε0 = 8.85e-12...
Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of wrist...
Medical research has shown that repeated wrist extension beyond
20 degrees increases the risk of wrist and hand injuries. Each of
24 students at a university used a proposed new computer mouse
design. While using the mouse, each student's wrist extension was
recorded. Data consistent with summary values given in a paper are
given. Use these data to test the hypothesis that the mean wrist
extension for people using this new mouse design is greater than 20
degrees. (Use α...
Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of wrist...
Medical research has shown that repeated wrist extension beyond
20 degrees increases the risk of wrist and hand injuries. Each of
24 students at a university used a proposed new computer mouse
design. While using the mouse, each student's wrist extension was
recorded. Data consistent with summary values given in a paper are
given. Use these data to test the hypothesis that the mean wrist
extension for people using this new mouse design is greater than 20
degrees. (Use
α...
A metallic wire of length L and diameter d is covered with a very thin isolating...
A metallic wire of length L and diameter d is covered with a
very thin isolating layer. The resistivity of the metal is ρ (rho)
and the wire has resistance R. When a battery with voltage V is
connected to the ends of the wire a current I flows through it.
a)Find an equation for the resistivity ρ (rho) in terms of the
variables provided.
b)For a wire of length 24.5 m and diameter 0.5 mm, calculate the
resistivity (in...
A thin-walled tube with a diameter of 6 mm and length of 20 m is used...
A thin-walled tube with a diameter of 6 mm and length of 20 m is
used to carry exhaust gas from a smoke stack to the laboratory in a
nearby building for analysis. The gas enters the tube at 200°C and
with a mass flow rate of 0.001 kg/s. Autumn winds at a temperature
of 15°C blow directly across the tube at a velocity of 7 m/s.
Assume the thermophysical properties of the exhaust gas are those
of air.
(a)...
A thin-walled tube with a diameter of 6 mm and length of 20 m is used...
A thin-walled tube with a diameter of 6 mm and length of 20 m is
used to carry exhaust gas from a smoke stack to the laboratory in a
nearby building for analysis. The gas enters the tube at 200°C and
with a mass flow rate of 0.005 kg/s. Autumn winds at a temperature
of 15°C blow directly across the tube at a velocity of 5 m/s.
Assume the thermophysical properties of the exhaust gas are those
of air. (a)...
Methane gas enters a horizontal pipe with a thin wall of 25 cm diameter at a...
Methane gas enters a horizontal pipe with a thin wall of 25 cm diameter at a temperature of 309 C with 4.5 tons of mass flow per hour and exits at 289 C. The pipe is smooth and its length is 10 m and the ambient and environmental temperature is 25 C. Since the smear coefficient of the pipe surface is given as 0.8;
a-) Indoor and outdoor convection coefficients (W / m2K),
b-) Heat loss from the pipe to...
Direct Materials Variances Silicone Engine Inc. produces wrist-worn tablet computers. The company uses Thin Film Crystal...
Direct Materials Variances
Silicone Engine Inc. produces wrist-worn tablet computers. The
company uses Thin Film Crystal (TFC) LCD displays for its products.
Each tablet uses one display. The company produced 450 tablets
during December. However, due to LCD defects, the company actually
used 500 LCD displays during December. Each display has a standard
cost of $6.40. LCD displays were purchased for December production
at a cost of $3,150.
Determine the price variance, quantity variance, and total
direct materials cost variance...
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