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A 1,576-kg car is moving down a road with a slope (grade) of 11% while slowing down at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force?
A moving body undergoes uniform acceleration while travelling in a straight line between points X, Y and Z. The distances XY and YZ are both 40m. The time to travel from X to Y is 12s and from Y to Z is 6s.
Sources A and B emit long-range radio waves of wavelength 440 m, What is the magnitude of the phase difference at the detector
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury and does 4.0 J of work during each cycle. What is the temperature of the colder reservo..
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
A hollow aluminium cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2 percent of the outside diameter of the piston. To what common temperature must the two pieces be heated in order that the cylinder ju..
A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over..
FInd the quantities and volume of liquid in each tank and predicting the damage or danger caused in the process.
A single loop of wire of radius 3 cm carries a current of 2.9 A. What is the magnitude of B on the axis of the loop at the following the center of the loop
What is wavelength in meters of an electron
What would be the equilibrium temperature when a 270 g block of copper at 300°C is placed in a 150 g aluminum calorimeter cup containing 820 g of water at 12.0°C.
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you find in part (a). Illustrate what should be the maximum speed of the car so it can round the curve safely?
What approximations or simplifying assumptions must you make in the calculations? (Note: Some of these choices are false because they are wrong physics!)
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