1) which of the following is not a dwarf planet? a) eris b) pluto c) ceres d) io 2) what are the three types of galaxies? a) circular, elongated, spiral b) irregular, centered, barred c) spiral, elliptical, irregular d) regular, spherical, sprial 3) experiments show that light behaved like as it travels through space a) sound b) gravity c) charged particles d) waves and particles 4) which stars are located in the lower left of the h-r diagram because they are hot but not very bright? a) red giant b) neutron stars c) white dwarfs d) main sequence 5) how can astronomers locate objects in the sky? a) by using altitude and zenith b) by using latitude and longitude c) by using distance and compass directions d) by using the celestial sphere and constellations

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n