A mirror must be ________ in shape to reflect the light back to a focus
Fill in the blank(s) with correct word
curved, concave, or parabolic
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Astronaut Brian leaves Earth in a spaceship at a speed of 0.280c relative to an observer on Earth. Brian is holding a pencil at an angle of 30.0° with the direction of travel, as seen by Brian
What angle does the pencil make with the direction of travel, as seen in the frame of reference of the observer? A) 29.0° B) 30.0° C) 31.0° D) 32.0° E) 33.0°
Which of the following formed elements has a nucleus?
a) Platelet b) Red blood cell c) White blood cell d) A and B e) All of the above
The term ______________ refers to the way in which a mineral breaks into splinters, irregularly shaped pieces, or shell-shaped surfaces
Fill in the blank(s) with correct word
An object starts from rest and undergoes uniform acceleration. During the first second it travels 5.0 m. How far will it travel during the third second?
A) 25 m B) 15 m C) 5.0 m D) 45 m