Some young star clusters contain large numbers of T Tauri stars
a. True
b. False
Indicate whether the statement is true or false
True
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Meters: A galvanometer that gives a full-scale deflection when 150 µA runs through it is used to make an ammeter that reads a maximum of 1.00 A. To do this, a 3.3-m? shunt was required. What is the resistance of just the galvanometer?
Fill in the blank(s) with the appropriate word(s).
A shear force of 400 N is applied to one face of an aluminum cube with sides of 30 cm. What is the resulting relative displacement? (The shear modulus for aluminum is 2.5 × 1010 N/m2)
A) 1.9 × 10-8 m B) 2.6 × 10-8 m C) 4.4 × 10-8 m D) 5.3 × 10-8 m E) 8.2 × 10-8 m
A 13.4-g bullet is fired into a 1.60-kg block of wood which is suspended as a ballistic pendulum. The combined mass swings up to a height of 8.50 cm. What was the kinetic energy of the combined mass immediately after the collision?
a. 1.32 J b. 1.33 J c. 0.0112 J d. 1.34 J e. 0.137 J
You want to swim straight across a river that is 76 m wide. You find that you can do this if you swim at an angle of ? = 28° from the upstream direction at a constant rate of 1.5 m/s relative to the water
At what rate does the river flow? The angle ? is measured from the river bank (directly upstream is ? = 0° while directly across the river is ? = 90°). A) 1.3 m/s B) 0.70 m/s C) 1.6 m/s D) 1.8 m/s