The distance between the object and the eyepiece of a compound microscope is 18.0 cm
The focal length of its objective lens is 0.80 cm and the eyepiece has a focal length of 2.3 cm. The near-point distance of the person using the microscope is 25.0 cm. What is the total overall magnification of the microscope?
A) -360 x B) -200 x C) -480 x D) -184 x E) -120 x
B
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Kinetic Energy: How much work must be done to accelerate a particle of mass 3.5 × 10-14 kg from a speed of 1.2 × 108 m/s to a speed of 1.9 × 108 m/s? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
Describe the motion of an object that possesses kinetic energy yet undergoes no net displacement.
a) The object must be rolling b) The object must be sliding c) The object must be at rest d) The object must be spinning e) The object must be falling
Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 8 and 9 cm, how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions?
a. 0 b. 2 c. 3 d. 4 e. more than 4
What is the equivalent resistance between points a and b when R = 12 ??
a.
20 ?
b.
16 ?
c.
24 ?
d.
28 ?
e.
6.0 ?