The engine of a boat (m = 1580 kg) exerts a 2200 N force northward, while the current
pushes it 1350 N eastward.
In what direction does the boat accelerate?
[?]°

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

The dominant wavelength of energy emitted by the sun is