Reaction forces are given in the figure below for beam ABCDE. The bending moment at C (in kN?m) is:
(A) 0.84 kN?m
(B) 0.96 kN?m
(C) 1.04 kN?m
(D) 1.36 kN?m
(C) 1.04 kN?m
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Impedance: A 25.0-mH inductor, a 2.00-?F capacitor, and a certain resistor are connected in series across an ac voltage source at 1.00 kHz. If the impedance of this circuit is 200 ?, what is the value of the resistor?
A. 100 ? B. 184 ? C. 552 ? D. 579 ? E. 200 ?
A small gas laser of the type used in classrooms may radiate light at a power level of 2.0 mW. If the wavelength of the emitted light is 642. nm, how many photons are emitted per second?
What will be an ideal response?
A person running in place on an exercise machine for 10 minutes uses up 17 Calories. Another person exercises by repeatedly lifting two 2.5-kg weights a distance of 50 cm
How many repetitions of this exercise are equivalent to 10 minutes of running? A) 730 B) 1450 C) 1500 D) 2200 E) 2900
The physical disintegration or fracturing of rock is called
a. mechanical weathering. b. gradation. c. chemical weathering. d. none of these.