When the northern hemisphere is experiencing winter
What will be an ideal response?
Earth is closer to the Sun than it is during northern summer
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From a fracture mechanics viewpoint, small-diameter brittle filaments have a higher strength than bulk material does, because the smaller-diameter material has a smaller _________.
Fill in the blank(s) with the appropriate word(s).
Current: How much charge must pass by a point in a wire in 10 s for the current in the wire to be 0.50 A?
A. 20 C B. 2.0 C C. 5.0 C D. 0.050 C
A free electron has a wave function ? = A cos (2.0 x 108 x). (a) What is the electron's wavelength? (b) What is the electron's kinetic energy?
What will be an ideal response?
An electron moving perpendicular to a magnetic field of 3.2 × 10-2 T moves in a circle of radius 0.40 cm. How fast is this electron moving?
A) 2.3 × 107 m/s B) 1.9 × 10-53 m/s C) 1.9 × 10-30 m/s D) 3.0 × 109 m/s E) 0.80 × 107 m/s