The focal lengths of the objective and eyepiece in a compound microscope are 0.80 cm and 2.5 cm, respectively. The image formed by the objective is 16 cm from it and the final image is 25 cm from the eye
What is the total overall magnification of the microscope? A) -19 x
B) -11 x
C) -2.0 x
D) -100 x
E) -200 x
E
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The quantum mechanical model of the hydrogen atom requires that if the principal quantum number = 6, there will be how many permitted orbital quantum numbers?
a. 3 c. 6 b. 16 d. 5
High-speed stroboscopic photographs show that the head of a golf club of mass 200 grams is traveling at 55.0 m/s just before it strikes a 46.0-gram golf ball at rest on a tee. After the collision, the clubhead travels (in the same direction) at 40.0 m/s. Find the speed of the golf ball just after impact
Paleozoic sedimentary rocks derived from marine deposits are widely distributed in all of the continents. What does this indicate about the height of the continents relative to sea level during the Paleozoic?
What will be an ideal response?
The rms current is equal to the direct current that:
a. produces the same average voltage across a resistor as in an AC circuit. b. dissipates an equal amount of energy in a resistor at the same rate as in an AC circuit. c. provides the same average current in a resistor as in an AC circuit. d. results in the same peak power in a resistor as in an AC circuit.