Questions from College Physics

Q: In the diagram, the positive terminal of the 12 V battery

In the diagram, the positive terminal of the 12 V battery is grounded —it is at zero potential. At what potential is point X?

Q: A cord of length 1.5 m is fixed at both

A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.2 g/m and the tension is 12 N. (a) What is the frequency of the fundamental oscillation? (b) What tension is required to mak...

Q: For the train in Fig. 3.2 and Example 3

For the train in Fig. 3.2 and Example 3.3, find the average velocity between 3:14 P.M. when the train is at 3 km east of the origin and 3:28 P.M. when it is 10 km east of the origin.

Q: How much work are the batteries in the circuit doing in every

How much work are the batteries in the circuit doing in every 10.0 s time interval?

Q: Show that A2 × Ω = W (amperes squared times ohms

Show that A2 × Ω = W (amperes squared times ohms = watts).

Q: Six sources emit sound equally in all directions with average power P

Six sources emit sound equally in all directions with average power P. A microphone is placed at a distance d from each source. Rank the situations in order of the intensity at the location of the mic...

Q: Why is the number of electron neutrinos reaching Earth from the Sun

Why is the number of electron neutrinos reaching Earth from the Sun smaller than had originally been predicted?

Q: Explain why the pitch of a bassoon is more sensitive to a

Explain why the pitch of a bassoon is more sensitive to a change in air temperature than the pitch of a cello. (That's why wind players keep blowing air through the instrument to keep it in tune.)

Q: A 1.6 m long string fixed at both ends vibrates

A 1.6 m long string fixed at both ends vibrates at resonant frequencies of 780 Hz and 1040 Hz, with no other resonant frequency between these values. The tension in the string is 1200 N. (a) What is...

Q: In a carbon-dating experiment, a particular type of mass

In a carbon-dating experiment, a particular type of mass spectrometer is used to separate 14C from 12C. Carbon ions from a sample are first accelerated through a potential difference ΔV1 b...