The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N

Find the effective resistance in the diagram above

The diagram above is the heating curve for a solid QR is the

14 N + 4 He → 17 O + X 7 2 8 In the equation above, the particles X is

The diagram above shows a plank RS pivoted its center of gravity O and is in equilibrium with the weight P and Q. If a weight 2P is added to P the plank will...

If electron are accelerated from rest through a potential difference of 10kv, what is the wavelength of the associated electron [m = 9.1 x 10-31kg, e = 1.6 x...

The above figure shows the motion of a progressive wave along a string. The particle motion of the medium is in direction

Given the inductor of inductance 5mH, 10mH and 20mH connected in series, the effective inductance is

If a convex lens of focal length 12cm is used to produce a real image four times the size of the object, how far from the lens must the object be placed?