If an electron is determined to be at x = 2.000 cm ± 0.0010 cm, what is the minimum uncertainty in the x component of its velocity? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)

What will be an ideal response?


5.8 m/s

Physics & Space Science

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A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete were to bicycle to the summit of a 500-m high mountain while expending power at this rate, she would have used at least ____ J of energy

a. 746 b. 3.43 × 105 c. 3.73 × 105 d. 7.46 × 105 e. 2.61 × 107

Physics & Space Science

Venus is 95 percent the diameter of Earth

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

Chondritic meteorites provide important clues because they are believed to

A. contain grains from the first material that condensed out of the Solar nebula. B. be the only source of the necessary amino acids required for life. C. be the source of all coal found on Earth. D. contain many rare metals.

Physics & Space Science

Two moles of nitrogen gas are contained in an enclosed cylinder with a movable piston. If the molecular mass of nitrogen is 28.0, how many grams of nitrogen are present?

a. 0.140 b. 56.0 c. 42.0 d. 112

Physics & Space Science