How can a charged object attract an uncharged object made of non-conducting material?
a. The charges in the uncharged object can become polarized. b. The uncharged object must somehow gain a like charge.
c. Attraction of an insulator is not possible.
d. The uncharged object must somehow gain an unlike charge.
A
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Which of the following is true of the orbits of all the planets in our solar system?
a. They all orbit at the same speed. b. They are all made out of gas. c. They all orbit the Sun in the same direction. d. They have many different orbital inclinations.
Two spaceships approach each other along a straight line at a constant relative velocity of 0.9880c as measured by the captain of one of the ships. An observer on Earth is able to measure the speed of only one of the ships as 0.9000c
From the point of view of the observer on Earth, what is the speed of the other ship in terms of the speed of light?
A bird, accelerating from rest at a constant rate, experiences a displacement of 25 m in 12 s. What is its acceleration?
a. 0.18 m/s2 b. 0.35 m/s2 c. 0.44 m/s2 d. 0.26 m/s2 e. 0.53 m/s2
Because of the ______________ zones formed by S and P waves as they travel through Earth, the outer core is thought to be a viscous liquid
Fill in the blank(s) with correct word