Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration, x is distance, and t is time)
a. v/t2 b. vx2
c. v2/t d. at
d
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In which general direction should you look to see the Moon rise?
A) north B) south C) east D) west E) It depends on the phase of the Moon.
Massive, more luminous stars have shorter lives than their smaller, dimmer counterparts
Indicate whether the statement is true or false
As a particle moves along the x axis it is acted upon by a single conservative force given by Fx = (20 ? 4.0x) N where x is in m. The potential energy associated with this force has the value +30 J at the origin (x = 0). What is the value of the potential energy at x = 4.0 m?
a. ?48 J b. +78 J c. ?18 J d. +48 J e. +80 J
Thin Lenses: A 4.0-cm tall apple is 20 cm in front of a plano-convex lens of focal length 75 cm.(a) Find the location of the image of the apple. Is it a real or a virtual image?(b) How tall is the image of the apple? Is it upright or inverted?
What will be an ideal response?