Lifting a 100-N load with 50 N of force lifts it
A) half as high.
B) as high.
C) twice as high.
Answer: A
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A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower end
It starts out vertically from rest and falls, pivoting about the hinge. Just as it has rotated through an angle of 55.0°, what is the downward acceleration of the end farthest from the hinge? A) 5.02 m/s2 B) 8.03 m/s2 C) 9.80 m/s2 D) 12.0 m/s2 E) 19.6 m/s2
Conversion of Units: A jogger has a mass of 50 kg. Express her mass in grams and micrograms (µg).
A. 50,000 g; 5 × 106 µg B. 500,000 g; 500 × 106 µg C. 500,000 g; 5000 µg D. 50,000 g; 5 × 1010 µg E. 50,000 g; 50,000 µg
The determination of the composition of a material by bombarding it with neutrons and monitoring the emitted radiation is __________
Fill in the blank(s) with correct word
What are the shortest wavelength X-rays produced by a 50,000-V X-ray tube?
What will be an ideal response?