Some young star clusters contain large numbers of T Tauri stars
Indicate whether the statement is true or false
T
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Radiation pressure: If the average intensity of the sunlight in Miami, Florida, is 1040 W/m2, what is the average value of the radiation pressure due to this sunlight on a black totally absorbing asphalt surface in Miami? (c = 3.00 × 108 m/s)
A. 2.28 × 10-6 N/m2 B. 1.63 × 10-6 N/m2 C. 7.83 × 10-6 N D. 3.47 × 10-6 N/m2 E. 9.78 × 10-6 N/m2
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Answer the following statement true (T) or false (F)
Two blocks hang from strings wound around different parts of a double pulley as shown. Assuming the system is not in equilibrium, what happens to the system's potential energy when it is released from rest?
A certain speed boat weighs 4,900 N. It can accelerate from 0 to 20 m/s in 5 seconds. (a) What is the mass of the boat? (b) What is the acceleration? (c) How large is the net force acting on the boat?