What is an expression representing a chemical reaction; the formula of the reactants are connected by an arrow with the formulas for the products

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.

A10 kg shark swimming at 5m/s swallows an absent-minded 0.5 kg fish that is originally at rest. what is the speed of the large fish after eating the smaller fish?