Pls I need answer asap 19. A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. at what angle should he fire the bullet to achieve this.

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Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine