How many significant figures are in 576,000?
A) 3
B) 4
C) 5
D) 6
E) ambiguous
E
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A sinusoidal electromagnetic wave is propagating in vacuum. At a given point P and at a particular time, the electric field is in the +x direction and the magnetic field is in the -y direction
(a) What is the direction of propagation of the wave? (b) If the intensity of the wave at point P is 0.36 W/m2, what is the electric field amplitude at that point? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T • m/A, ?0 = 8.85 × 10-12 C2/N • m2)
What is the net force inward acting on a spherical bathysphere of diameter 2.00 m at an ocean depth of 1000 m? (The pressure inside the bathysphere is, hopefully, 1 atm.) ?sea water = 1.02 × 10^3 kg/m3
a. 1.26 × 10^4 N b. 1.26 × 10^6 N c. 1.26 × 10^8 N d. 1.26 × 10^10 N e. 1.26 × 10^2 N
What is the approximate nuclear radius of an isotope of sodium with 11 protons and 12 neutrons?
What will be an ideal response?
A uniform rod of length L, mass M, is suspended by two thin strings. Which of the following statements is true regarding the tensions in the strings?
1.T2 = T1
2.T2 = 2.5 T1
3.T2 = 0.6 T1
4.T2 = 0.8 T1
5.None of the above
6.Not enough information to determine