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?
(a) 27 cm in front of the lens, virtual (b) 5.5 cm, upright
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Answer the following statement(s) true (T) or false (F)
1. The electric field created by a dipole at an arbitrary point in space around that dipole is always parallel to the dipole’s dipole moment vector. 2. The dipole moment of an electrically polarized atom always points in the same direction as the external field that has polarized it.
Evaluate the Prandtl number from the data below
GIVEN
FIND
The Prandtl number (Pr)
Through radar observations it was found that Venus':
A) orbit around the Sun is speeding up. B) atmosphere is changing rapidly. C) rotation on its axis is retrograde. D) orbit around the Sun is in the clockwise sense. E) orbital period is 243 days.
The only force acting on a 2.0-kg body moving along the x axis is given by Fx = (2.0x) N, where x is in m. If the velocity of the object at x = 0 is +3.0 m/s, how fast is it moving at x = 2.0 m?
a. 4.2 m/s b. 3.6 m/s c. 5.0 m/s d. 5.8 m/s e. 2.8 m/s