3. In tackling a running back from an opposing team, a defensive lineman exerts a force of 500 N at 180°, while a linebacker simultaneously applies a force of 650 N at 270º. What
is the resultant force on the ball carrier?
Soon al 180°
bson at 2ho
4. Kim pushes a lawn mower across a lawn by applying a force of 95 N along the handle
that makes an angle of 60° to the horizontal.
a. What are the horizontal and vertical components of this force?

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

Sarah and michelle work at a tech company that designs exercise apps. sarah tells michelle she has heard that james, their supervisor, interviewed with a competitor and may be leaving the company, which would open up a management position. what kind of power is sarah exerting?