How many tidal bulges "move" around Earth daily?
a. Two
b. Six
c. One
d. Four
a
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A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the Sun to push this solar sail. If a huge sail of area 6.00 × 10^5 m2 and mass 6000 kg were placed into orbit and turned toward the Sun, what would be the force exerted on the sail? (Assume a solar intensity of 1380 W/m2.)
The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?
A. 16 s B. 21 s C. 24 s D. 14 s E. 19 s
Fig. 22-1 shows four Gaussian surfaces surrounding a distribution of charges. Which Gaussian surfaces have no electric flux through them?
A) a. B) b. C) c. D) b and d. E) b and c.
Leptons are the fundamental particles that are the building blocks of hadrons
a. True b. False Indicate whether the statement is true or false