Matter Waves: How "slow" must a 200-g ball move to have a de Broglie wavelength of 1.0 mm? (h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
3.3 × 10-30 m/s
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The first pulsar was discovered by __________ in November of 1967
a. Jocelyn Bell b. Isaac Newton c. Albert Einstein d. Walter Baade e. Edwin Hubble
Series/Parallel Circuits: Four resistors are connected across an ideal dc source of V = 8.0 V, as shown in the figure. Assume all resistances shown are accurate to two significant figures. What is the current through the 9.0-? resistor?
A. 1.0 A B. 0.67 A C. 0.50 A D. 0.90 A E. 2.0 A
A thick-walled metal pipe of length 20 cm has an inside diameter of 2.0 cm and an outside diameter of 2.4 cm. What is the total surface area of the pipe, counting the ends?
What will be an ideal response?
Does a high-speed bullet's path bend more than a light beam bends as it passes near Earth?
A) Yes, because the bullet is heavier than the light beam. B) Yes, because the light beam has a greater acceleration that the bullet. C) Yes, because the bullet moves slower than the light beam. D) No, because all falling objects accelerate at the same rate. E) No, because of Einstein's equivalence principle.