A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is _________
Fill in the blank(s) with correct word
5 m/s2
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The speed of sound at 0°C is 331 m/s. What is the speed of sound at 10.0°C? (0°C = 273 K)
a. 337 m/s b. 325 m/s c. 324 m/s d. 329 m/s e. 343 m/s
In a telescopic observation of a field of stars, you see an irregularly-shaped dark patch. This is most likely
A. an area where there are no stars. B. a dark nebula. C. a black hole. D. the dusty center of a globular cluster.
The coefficient of linear expansion of aluminum is 24 × 10-6K-1 and the coefficient of volume expansion of olive oil is 0.68 × 10-3K-1
A novice cook, in preparation for deep-frying some potatoes fills a 1.00-liter aluminum pot to the brim and heats the oil and the pot from an initial temperature of 15°C to 190°C. To his consternation some olive oil spills over the top. How much? A) 0.11 liters B) 0.12 liters C) 0.13 liters D) 0.14 liters E) 0.15 liters
For a body oscillating at the end of a spring, the energy is only elastic potential energy
a. True b. False Indicate whether the statement is true or false