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An underwater scuba diver sees the Sun at an apparent angle of 48.0° above the horizon. What is the real elevation angle of the Sun above the horizon?
A bright object and a viewing screen are separated by a distance of 80 cm. At what locations among the object and the screen must a lens of focal length 14 cm be placed in order to produce a crisp image on the screen?
A planet with a mass of 4.47E21 kg is in a circular orbit around a star with a mass of 4.83·1030 kg. The planet has an orbital radius of 1.31E10 m. What is the linear orbital velocity of the planet
Sheena pulls a sled along a snowy path on level ground with a maple syrup barrel, 26 kg, on the sled. find the tension between the barrel and Sheena's hand.
If momentum were conserved in each collision, what would you expect the ratio of the total momentum before the collision to the total momentum after the collision to be?
A 60 kg skier is in a tuck and moving straight down a 30 degree slope. What is the resultant of the external forces that act on the skier
consider a small raindrop and a large raindrop falling through the atmosphere. compare their terminal speeds. what are
A simple harmonic oscillator consists of a block of mass 4.10 kg attached to a spring of spring constant 195 N/m. When t = 2.00 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s. (a) What is the amplitude of the oscilla..
A 6.70-µC particle moves through a region of space where an electric field of magnitude 1250 N/C points in the positive x direction, find the magnitude and direction of the particle's velocity
Two stars are 2.1 Ã- 1011 m apart and are equally distant from the earth. Find the maximum distance that these stars could be from the earth
A war-wolf or trebuchet is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A simple trebuchet.
A paperweight, when weighed in air, has a weight of W = 6.9N.When completely immersed in water, however, it has a weight of Win water = 4.3 N. Find the volume of the paper weight
If the average velocity of an object is nonzero in some finite time interval, which of the following must be true during this interval? (Select all that apply.)
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