The peak voltage of an AC source is 400 V. What is the rms voltage?
a. 100 V
c. 141 V
b. 200 V
d. 283 V
D
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Which dwarf planet did the NASA Dawn spacecraft enter into orbit around in 2015?
A) Pluto B) Eris C) Ceres D) Haumea
The focal lengths of the objective lens and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. An object is placed at 0
30 cm from the objective lens and the image of this object is viewed with the eyepiece adjusted for minimum eyestrain for persons with a near point of 25 cm. The magnitude of the final overall magnification of the microscope is closest to A) 200 B) 500 C) 100 D) 410 E) 300
A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle of 60° with the plane of the coil. If the magnitude of this field increases by 6.0 mT every 10 ms, what is the magnitude of the emf induced in the coil?
A. 55 mV B. 46 mV C. 50 mV D. 60 mV E. 35 mV
A light aircraft that weighs 1,600 N is accelerated at 8 m/s/s for 15 seconds. The work done on the aircraft is _________
Fill in the blank(s) with correct word