Question

1. If the buoyant force of an object is 300 N, and it displaces a volume of 14 m³, find the density

of the fluid.

a) 21.43 kg/m³

b) 30.61 kg/m³

c)2.18 kg/m³

d) 5.16 kg/m³

2. Find the frequency of an object that gives of an energy of 3.2x10^-33J.

a) 2.12x10^-66 Hz

b) 6.2x10⁷ Hz

c) 4.8 Hz

d) 1.07x10^-41 Hz

3. You observe a blue star that emits a wavelength of λ = 483 nm. Find the temperature of the star.

a) 12,500 K

b) 6004 K

c) 13,000 K

d) 5800 K

Answer 1