Two sinusoidal electromagnetic waves of the same angular frequency, ω = 110 rad/s, and oscillating in the same direction are emitted from the same location. the waves are emitted starting at times t1 and t2, respectively, with t2 later than t1 by t2 - t1 = 0.22 s. they are emitted with the same initial phase, φ = 2.1 rad, but have different amplitudes, a1 = 2.4 v/m and a2 = 5.5 v/m, respectively. the time dependence of the waves at their source has the form ei = ai cos(ωt+φ), where t denotes the elapsed time since the start of emission for each wave.

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?