1. A single cylinder horizontal engine runs at 120 r. p.m. The length of stroke is 400 mm. Themass of the revolving parts assumed concentrated at the crank pin is 100 kg and mass of thereciprocating parts is 150 kg. Determine the magnitude of the balancing mass required to beplaced opposite to the crank at a radius of 150mm which is equivalent to all the revolving and 2/3 * r * d of the reciprocating masses. If the crank turns 30° from the inner dead centre, find themagnitude of the unbalanced force due to the balancing mass. ​

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].