Q: Estimate the number of H2O molecules in a human body of mass
Estimate the number of H2O molecules in a human body of mass 80.2 kg. Assume that, on average, water makes up about 62% of the mass of a human body.
See AnswerQ: When a tuning fork is held over the open end of a
When a tuning fork is held over the open end of a very thin tube, as in Fig. 12.7, the smallest value of L that produces resonance is found to be 30.0 cm. (a) What is the wavelength of the sound? [Hi...
See AnswerQ: Explain how the period of a mass-spring system can be
Explain how the period of a mass-spring system can be independent of amplitude, even though the distance traveled during each cycle is proportional to the amplitude.
See AnswerQ: The trajectory of a charged particle in a uniform magnetic field is
The trajectory of a charged particle in a uniform magnetic field is a helix if / has components both parallel to and perpendicular to the field. Explain how the two other cases (circular motion for v...
See AnswerQ: Because iodine accumulates in the thyroid, radioactive iodine-131 can
Because iodine accumulates in the thyroid, radioactive iodine-131 can be used to kill cancerous thyroid tissue with minimal damage to other tissue. Sometimes the dose is administered in an outpatient...
See AnswerQ: A 2.0 kg toy locomotive is pulling a 1.
A 2.0 kg toy locomotive is pulling a 1.0 kg caboose. The frictional force of the track on the caboose is 0.50 N backward along the track. If the train’s acceleration forward is 3.0 m/s2, what is the m...
See AnswerQ: An ultraviolet microscope locates an electron in an atom to within a
An ultraviolet microscope locates an electron in an atom to within a distance of 0.5 nm. What is the order of magnitude of the minimum uncertainty in the momentum of the electron located in this way?...
See AnswerQ: A series circuit with a resistor and a capacitor has a time
A series circuit with a resistor and a capacitor has a time constant of 0.25 ms. The circuit has an impedance of 350 Ω at a frequency of 1250 Hz. What are the capacitance and the resistance?
See AnswerQ: A barge of mass 5.0 × 104 kg is pulled
A barge of mass 5.0 × 104 kg is pulled along the Erie Canal by two mules, walking along towpaths parallel to the canal on either side of it. The ropes harnessed to the mules make angles of 45° to the...
See AnswerQ: What is the wavelength of the microwaves transmitted by a cell phone
What is the wavelength of the microwaves transmitted by a cell phone at 900 MHz? (Microwaves travel at 3.0 × 108 m/s.)
See Answer
