We begin by investigating whether the lengths are the same. find the length of the vector, c, starting with the components given in equations 3 and 4.express your answer in terms of a, b, and θ.equation 3: \evec{c}_x = a + b\cos(\theta) andequation 4: \evec{c}_y = b\sin(\theta).c = somehow do not understand how to get the problem right on mastering engineering. i square each equation, add them, and use the pythagorean theorem.

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is