BackA particle has rest mass kg and momentum kgm/s.
(a) What is the total energy (kinetic plus rest energy) of the particle?
(b) What is the kinetic energy of the particle?
(c) What is the ratio of the kinetic energy to the rest energy of the particle?
The atomic mass of is u. Show that the decay of is energetically possible, and calculate the energy released in the decay.
The earth's circumference is approximately 40.1 Mm (megameters). What is this circumference in kilometers?
Astronomers often detect radio waves with wavelengths of 3,000,000,000 nm. What is this wavelength expressed in decameters (dam)?
Rewrite 0.00016 kg in scientific notation.
Rewrite 299,800,000 m/s in scientific notation.
Rewrite 3.41 × 10−4 in standard form:
Rewrite 9.98 × 107 in standard form.
The position of an object is given by 𝓍 = At + Bt², where 𝓍 is in meters and t is in seconds. What are the units of A and B?
Write the following numbers in powers of 10 notation: 0.219.
Write out the following numbers in full with the correct number of zeros: 2.5 x 10⁻¹
Time intervals measured with a physical stopwatch typically have an uncertainty of about 0.2 s, due to human reaction time at the start and stop moments. What is the percent uncertainty of a hand-timed measurement of 4.5 min?
A watch manufacturer claims that its watches gain or lose no more than 9 seconds in a year. How accurate are these watches, expressed as a percentage?
Write the following as full (decimal) numbers without prefixes on the units: 22.5 nm.