A 50 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0
is 331 m/s. What is the wavelength of the second mode?
A. 50 cm
B. 75 cm
C. 90 cm
D. 40 cm
E. 63 cm
A. 50 cm
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A rectangular loop of wire carrying a 4.0-A current and with certain dimensions is placed in a magnetic field of 0.60 T. The magnitude of the torque acting on this wire when it makes a 60° angle with the field is 1.1 Nm
What is the area of this wire? A) 0.20 m2 B) 0.40 m2 C) 0.26 m2 D) 0.80 m2 E) 0.53 m2
A person looks horizontally at the edge of a swimming pool. If its length is 5 m, and the pool is filled to the surface, to what depth (in m) could the observer see? (n for water is 1.33.)
A. 3.2 B. 4.4 C. 2.1 D. 1.0 E. 0.3
Concerning our solar nebula theory, the presence of so many "hot Jupiters" gives us problems with how they can form that close to their star
Indicate whether the statement is true or false
A 0.28-kg stone you throw rises 34.3 m in the air. The magnitude of the impulse the stone received from your hand while being thrown is
A.
s.B.
s.C.
s.D.
s.E.
s.