Does the universe look the same in the directions of the HDFN and HDFN (fractions of galaxy types statistically similar)?
A: Yes.
B: No.
Ans: A: Yes.
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Spherical Mirrors: A plant that is 4.0 cm tall is placed 15 cm from a concave spherical mirror having a focal length of magnitude 20 cm. Where is the image located?
A. 12 cm behind the mirror B. 12 cm in front of the mirror C. 60 cm behind the mirror D. 60 cm in front of the mirror
An Earth satellite in close orbit circles Earth in about an hour and a half. How long would a satellite located as far away as the Moon take to orbit Earth?
A) the same hour and a half B) less than an hour and a half C) about 28 days D) need more information E) none of the above
Why is gasification being pursued as an option for coal use?
What will be an ideal response?
The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is
a. 0 d. 5 m/s2 b. 2 m/s2 e. 7.5 m/s2 c. 4 m/s2