Choose the best description of the transit method of locating exoplanets. By aiming powerful telescopes directly at star systems astronomers are able to detect larger planets.

Using satellite based telescopes in different locations astronomers are able use parallax calculations to determine if there are planets in orbit around a star.

When a planet passes between a star and an observer the luminosity of the star is reduced by a small amount.

Using a telescope, wobble can be detected from the effect that the planet's gravity has on the star.

What is the magnitude of the resultant vector round your answer to the nearest tenth

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j

A10-kg isto a of 10 m at aa0.9 kg/m.30 kg of ,at aas10-m .. ( 9.8 m/s2 g.)