The SI unit of pressure is __________
Fill in the blank(s) with correct word
N/m2 or pascal
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Uniform Circular Motion: A Ferris wheel has radius 5.0 m and makes one revolution every 8.0 s with uniform rotation. A person who normally weighs 670 N is sitting on one of the benches attached at the rim of the wheel. What is the apparent weight (the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion?
Fill in the blank(s) with the appropriate word(s).
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
When radiation from an object passes through the interstellar medium:
a. the object appears dimmer; b. the object appears bluer; c. the object appears bluer and dimmer; d. the object appears redder and dimmer.
Radioactive Decay: Fermium-253 has a half-life of 3.00 days. If a sample of fermium originally has 7.37 × 107 nuclei, how long will it take for there to be only 3.36 × 106 fermium-253 nuclei left in this sample?
A. 2.75 days B. 9.80 days C. 13.4 days D. 15.7 days E. 58.6 days