Why is knowing a combination of four pairs of equal sides or angles harantees one of the congruence relationships

A 55.0 kg crate is being pulled down a 20.0 $^{\circ}$^?  incline by a rope(acting parallel with the incline surface). If it is accelerating downwards at 1.50m/s $^2$²  and the force of the kinetic friction is 152 N then what is the tension of the rope?

A quadratic function has zeros at -3/2 and 6. The graph of the function passes through the points (1,-12.5). What is the equation of the function, in standard form?

france has claimed the worlds fastest train. A modified TGV can accelerate to a maximum speed of 575 km/h. If the train started from rest and reached its maximum velocity of 575 km/h at 8.00 km, what would the magnitude of the acceleration of the train be?

a lightning strike transfers 210 C of charge to the ground within 1.5x10^-3 s (1.5 ms). The current during the lightning strike is?

a canopy tour co. designs a zip line . one line takes the passenger through a waterfall  the max height which is 167 ft. the zip line starts at 130 ft and goes to ground at 100 ft out. the water fall starts at 167 ft and hits ground at 75 ft our. what are th system of equations to model these

How would the net cell potential for the following cell be affected if the reduction of tin(II) ions had been selected as the reference half-cell?       Mg(s) | Mg(NO3)2(aq) || Cd(NO3)2(aq) | Cd(s)  

1.find a possible cathode that can be used in an electrochemical cell using a copper anode and having an E0cell value > 1.00 V.

explain how you determined a possible cathode using calulations

The safe stopping distance, d, in metres, of a Harold Dobson motorcycle on wet pavement is given by the function d s 0 0. 2 3s s 20 2 ^ h = ^ + h, where s is the speed of the motocycle in metres per second. Find the speed at which the safe stopping distance is 50 metres.

which of the following are spontaneous reactions? 

Consider the following combination of reactants.

Sn(NO3)2(aq) and Cr(NO3)2(aq)

Co(s) and HCl(aq)

Fe(NO3)2(aq) and KMnO4(aq)

CuSO4(aq) and Cd(s)

ZnCl2(aq) and Pb(s)