When a ball thrown straight upwards reaches the very top of its path, its acceleration is
A) zero.
B) 5 m/s2.
C) 10 m/s2.
D) none of the above
Answer: C
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Carnot Engine: An ideal Carnot engine has an efficiency of 83.0% and performs 4500 J of work every cycle. How much energy is discharged to the lower temperature reservoir every cycle?
A. 920 J B. 830 J C. 740 J D. 3700 J E. 5400 J
Food in a pressure cooker is cooked faster due to
A) higher temperature. B) greater rate of bubble formation in the water. C) energy transfer in the water. D) all of the above E) none of the above
If a K0 meson at rest decays in 0.89 × 10^?10 s, how far will a K0 meson moving at 0.96 c travel through a bubble chamber?
a. 17 cm b. 1.1 cm c. 53 cm d. 42 mm e. 9.2 cm
The time interval during which a nucleus has a 50% probability of decaying is its half life
Indicate whether the statement is true or false