An object has a volume of 4.0 m3 and weighs 40,000 N. What will its apparent weight be in water of density 1000 kg/m3?
A) 40,000 N
B) 39,200 N
C) 9,800 N
D) 800 N
D
Physics & Space Science
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A marble has a radius of 16 mm. Approximately how many marbles will fit in a cube-shaped container with each side equal to 36 cm?
a. 20 b. 510 c. 1 420 d. 80
Physics & Space Science
What electric charge is characteristic for an ion of S?
a. 6+ b. 0 c. 2– d. 2+
Physics & Space Science
An element will decay to an element with higher atomic number in the periodic table if it emits
A) a beta particle. B) a gamma ray. C) a proton. D) an alpha particle. E) none of the above
Physics & Space Science
In a velocity selector for ions, when the electric field is increased 50%, what change in the magnetic field is necessary to select the same speed as before?
A. a 50% decrease B. a 25% decrease C. no change D. a 25% increase E. a 50% increase
Physics & Space Science