Mark each statement as to whether it pertains to electromagnetic waves, mechanical waves, all waves, or no waves (false). Group of answer choices Can be Doppler shifted, reflected, refracted, diffracted, and can undergo constructive and destructive interference. [ Choose ] Consist of oscillating electric and magnetic fields. [ Choose ] Examples are sound, water, and vibrating guitar strings. [ Choose ] Wavelength is called pitch. [ Choose ] The frequency determines how energetic the photons are.

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader

What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?