A Toy Cork Gun Contains a Spring Whose Spring Constant

question 28

Multiple Choice

A toy cork gun contains a spring whose spring constant is 10.0 N/m. The spring is compressed 5.00 cm and then used to propel a 6.00-g cork. The cork, however, sticks to the spring for 1.00 cm beyond its unstretched length before separation occurs. The muzzle velocity of this cork is:

• A) 1.02 m/s
• B) 1.41 m/s
• C) 2.00 m/s
• D) 2.04 m/s
• E) 4.00 m/s

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Definitions:

Placebo Effect

A beneficial effect produced by a placebo drug or treatment, which cannot be attributed to the properties of the placebo itself, and must therefore be due to the patient's belief in that treatment.

Halo Effect

A cognitive bias where the perception of one positive trait (like attractiveness) in a person influences the observer's judgment to also perceive other unrelated positive traits.

Placebo Control Group

A group in experimental research that receives a sham or inert treatment, used to compare against the real treatment's effects.

Active Component

The element in a system or product that is responsible for its primary function or effect.