The Doppler technique for planet detection has found Earth-like planets around nearby Sun-like stars
Indicate whether the statement is true or false
FALSE
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A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?5.5 N/C, Ey = Ez = 0 . If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz = 0, what is the distance from the origin to the particle at t = 2.0 s?
a. 60 m b. 28 m c. 44 m d. 12 m e. 88 m
The principle of equivalence states that
A) the laws of physics are the same in all inertial frames of reference. B) the speed of light is the same in any frame of reference. C) clocks that move relative to one another keep time at different rates. D) the length of an object depends on its speed relative to a given observer. E) all physical experiments conducted in a uniform gravitational field and in an accelerated frame of reference give identical results.
Significant Figures: What is the sum of 1.53 + 2.786 + 3.3 expressed to the correct number of significant figures?
A. 7 B. 7.6 C. 7.62 D. 7.616 E. 7.6160
The transit method searches for extrasolar planets by
A) monitoring stars for slight dimming that might occur as unseen planets pass in front of them. B) obtaining high-resolution photographs of other star systems. C) observing Doppler shifts in a star's spectrum caused by an unseen planet. D) looking for slight back and forth shifts in a star's position in our sky.