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The equation dQ = mcdT tells us how the temperature of an object changes when heat energy dQ is added. In this case the specific heat capacity c is the same for the contents of both beakers since...

Begin by calculating the current force and moment of the bar.Force: 8+4-7=5 (or vice versa)Moment: 72= 14 Nm anticlockwise 81= 8 Nm clockwise 4*1= 4 Nm anticlockwiseSum calculated moments: 14+4-8...

First, you would resolve the initial velocity into horizontal and vertical velocity. Then, using the correct suvat equation, s=ut, you can calculate for t. In this case, t=4.0s to 2 significan figures.

70kg x 9.8 = 686N x 2 = 1372 Nm, as 2m away again, divide by 2 = 868 Newtons

Begin by explain that pressure is described by the amount of force exerted on a given area (N/m²). The force in this equation is given by the weight of everything directly above the point you a...