A pellet is fired from a toy gun with a spring initially compressed by a distance x. The pellet's initial velocity is at an angle θ (θ < 90o ) above the horizontal. Assume no friction anywhere and assume that the acceleration of gravity g is constant. When the projectile is at its maximum height h above the initial height, what is the speed v of the projectile?

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same