Gabbi

K3Fe(SCN)6 + Na2Cr2O7 + H2SO4 = Fe(NO3)3 + Cr2(SO4)3 + (Na2SO)4 + KNO3 + CO2 + H2O

A 1000 kg car traveling at 50 km/hr crashes into a concrete abutment causing the front end to collapse 0.7 m. Assume an inelastic collision and estimate the average impulsive force of the abutment on the car in kN.

An elevator mass of 1000 kg falls from a height of 12 m after a sudden failure in the hoisting cable. The mass is stopped by a spring at the bottom of the shaft having a spring constant of 80 kN/m. Determine the spring's compression distance in m that brings the falling elevator momentarily to rest.

The force F = (6.8i + 4.6j + 6.2k) kN moves a small object a displacment of d = (8.2i + 2.3j -7.2k) m. Find the work done by the force in kJ

What is the force in N exerted on a 3870 kg spaceship a distance of 8700 km above the surface of a planet having a radius of 2175 km and average density of 4.2 g/cu.cm.

At the instant shown, the 1200 kg car is travelling in a circular path of radius R = 110 m on a 'banked' track of theta = 12 deg. If the COF between track surface and tires is zero, determine the constant speed in m/s necessary to keep the car travelling on the circular path radius R = 110 m.

here is the problem

At the instant shown the car is travelling at a constant speed of 85 km/hr at the crest of a hill having a circular arc profile of radius R = 190 m. Assume the driver's mass of 90 kg is entirely supported by a bathroom scale (yes, the driver is sitting on a bathroom scale!?!?). Determine the force in N exerted on the bathroom scale at the instant shown.

Hard braking 'locks' all wheels of the car in P9 above at the crest of the hill at the instant shown. Determine the absolute value of the acceleration in m/s/s if the COF between pavement and tires is 0.82; the speed at braking is 85 km/hr; and the circular arc radius R = 190 m.