A ventilation fan has blades 0.25 m long rotating at 20 rpm. What is the centripetal acceleration of a point on the outer tip of a blade?
a. 1.1 m/s2
b. 0.87 m/s2
c. 0.55 m/s2
d. 0.23 m/s2
a
You might also like to view...
What energy transformation occurs during photosynthesis?
A) radiant E ? chemical E B) chemical E ? thermal E C) radiant E ? kinetic E D) thermal E ? chemical E E) chemical E ? kinetic E
A square plate has an area of 29.00 cm2 at 20.0°C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2 . What area must be removed from the plate at 20.0°C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 × 10^?6 (°C)?1.)
a. 0.079 3 cm2 b. 0.159 cm2 c. 0.238 cm2 d. 0.836 cm2 e. 0.921 cm2
A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x = 4 cm when t = 0), what is the speed of the mass when t = 5 s?
a. zero c. 0.016 m/s b. 0.0065 m/s d. 0.024 m/s
Lead that comes from radioactive decay is called ______________ lead
Fill in the blank(s) with correct word