Tyrrell throws his 0.20-kg football in the living room and knocks over his mother's 0.80-kg antique vase. After the collision, the football bounces straight
back with a speed of 3.9 m/s, while the vase is moving at 2.6 m/s in the
opposite direction. a) How fast did Tyrrell throw the football? b) If the football
continued to travel at 3.9 m/s in the same direction it was thrown, would the
vase have to be more or less massive than 0.80 kg?​

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Select the three ways that the parallel-plate capacitor differs from a car battery.

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element