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a 54 newton horizontal force pushes a 5.0 kg mass sitting on a horizontal surface. Additionally , the horizontal surface exerts a 30 newton frictional force on the mass. What is the acceleration of the mass?
An airplane must reach a speed of 322 km/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
A molecule has r.m.s speed of 550m/s at temperature of 20°c.what is its r.m.s speed at 80°c
The question are in the file below :
Figure 5 shows two conducting rails 0.500 m apart with a 50.0 g conducting bar that slides on top of two rails. A magnetic field of 0.750 T is directed perpendicular to the plane of the rails and points upward. An external dry cell is connected to the rails supplying a voltage, V and a constant current of 1.00 A to the rail-bar system.