Questions from College Physics

Q: The average adult has about 5 L of blood, and a

The average adult has about 5 L of blood, and a healthy adult heart pumps blood at a rate of about 80 cm3/s. Estimate how long it takes for medicine delivered intravenously to travel throughout a pers...

Q: The orbital speed of Earth about the Sun is 3.0

The orbital speed of Earth about the Sun is 3.0 × 104 m/s and its distance from the Sun is 1.5 × 1011 m. The mass of Earth is approximately 6.0 × 1024 kg and that of the Sun is 2.0 × 1030 kg. What is...

Q: (a) A proton moves with uniform circular motion in a

(a) A proton moves with uniform circular motion in a magnetic field of magnitude 0.80 T. At what frequency f does it circulate? (b) Repeat for an electron.

Q: Rank these nuclides in decreasing order of the number of neutrons:

Rank these nuclides in decreasing order of the number of neutrons: (a) (b) (c) (d) (e) (f)

Q: Charges of +2.0 nC and −1.0

Charges of +2.0 nC and −1.0 nC are located at opposite corners, A and C, respectively, of a square which is 1.0 m on a side. What is the electric potential at a third corner, B, of t...

Q: One day when your friend from Problem 43 is picking up a

One day when your friend from Problem 43 is picking up a package, you notice that he bends at the waist to pick it up rather than keeping his back straight and bending his knees. You suspect that the...

Q: The FM radio band is broadcast between 88 MHz and 108 MHz

The FM radio band is broadcast between 88 MHz and 108 MHz. What range of capacitors must be used to tune in these signals if an inductor of 3.00 µH is used?

Q: The flux through a closed surface is zero. Is the electric

The flux through a closed surface is zero. Is the electric field necessarily zero? Is the net charge inside the surface necessarily zero? Explain your answers.

Q: Suppose d = 3.25λ. (a) In

Suppose d = 3.25λ. (a) In terms of λ, what is the difference in the path lengths traveled by the waves that arrive at the detector at θ = 0? (b) What is the di...

Q: Ultraviolet light of wavelength 220 nm illuminates a tungsten surface, and

Ultraviolet light of wavelength 220 nm illuminates a tungsten surface, and electrons are ejected. A stopping potential of 1.1 V is able to just prevent any of the ejected electrons from reaching the o...