If a flea can jump up to 45 cm above its initial resting point, with what speed is it able to leave the ground when jumping?
A. 2.1 m/s
B. 3.0 m/s
C. 8.8 m/s
D. 4.2 m/s
B. 3.0 m/s
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Kepler's 3rd law says T2 /r3 = K. What does the constant K depend upon?
A) period B) frequency C) size D) mass E) temperature
The period from about one to 100 seconds after the Big Bang is called the:
A) pair-production era. B) atomic epoch. C) nuclear epoch. D) quark epoch. E) lepton epoch.
On a Hertzsprung-Russell diagram, where would you find white dwarfs?
A) upper right B) lower right C) upper left D) lower left
Magnetic Moment: A flat coil containing 25 identical loops carries 6.4 A of current. When it is placed in a uniform magnetic field of 0.22 T that is oriented parallel to the plane of the coil, the magnetic torque on it is 3.7 N ? m.(a) What is the magnetic moment of the coil?(b) What is the area of each loop?
What will be an ideal response?