Resistors in Combination: Two resistors in series are equivalent to 9.0 ?, and in parallel they are equivalent to 2.0 ?. What are the resistances of these two resistors?
Fill in the blank(s) with the appropriate word(s).
3.0 ? and 6.0 ?
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A 6.0-?F air capacitor is connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5)
How much additional charge flows from the battery, which remained connected during the process? A) 1.2 mC B) 1.5 mC C) 1.7 mC D) 2.1 mC E) 2.5 mC
Three individuals stand with all of their weight on the heel of one foot: a man of weight 600 N and a heel area of 100 cm2, a child of weight 200 N and a heel area of 25 cm2, and woman of weight 450 N and a heel area of 2 cm2. The one exerting the least pressure on the ground is
A. the child. B. the woman. C. the man. D. All of these choices exert the same
The distance between the object and the eyepiece of a compound microscope is 25.0 cm. The focal length of its objective lens is 0.200 cm and the eyepiece has a focal length of 2.60 cm
A person with a near point of 25.0 cm and a far point at infinity is using the microscope. (a) What is the angular magnification obtainable using the eyepiece alone as a magnifying lens if the final image is at the person's far point? (b) What is the total magnification of the microscope when used by the person of normal eyesight?
What is the kinetic energy of an electron that passes undeviated through perpendicular electric and magnetic fields if E = 4.0 kV/m and B = 8.0 mT?
a. 0.65 eV b. 0.71 eV c. 0.84 eV d. 0.54 eV e. 1.4 eV