A Molecule of Roughly Spherical Shape Has a Mass of 6.10

question 13

Multiple Choice

A molecule of roughly spherical shape has a mass of 6.10 × 10^-25 kg and a diameter of 0.70 nm.The uncertainty in the measured position of the molecule is equal to the molecular diameter.What is the minimum uncertainty in the speed of this molecule? (h = 6.626 × 10^-34 J ∙ s)

• A)0.78 m/s
• B)7.8 m/s
• C)78 m/s
• D)0.078 m/s
• E)0.0078 m/s

---

Definitions:

Crankshaft Rotation

The movement of an engine's crankshaft, converting linear motion from pistons into rotational motion for power.

Volumetric Efficiency

The ratio of air drawn into a cylinder compared to the maximum air that could enter the cylinder. Most gas engines are about 80 to 90 percent volumetrically efficient.

Air Drawn

The process of pulling air into a system, such as an engine or ventilation system, from the surroundings.

Cylinder

A fundamental part of an engine's block that houses the pistons, where fuel combustion occurs to generate power.