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A 71.0 kg skier is pulled up a frictionless ski slope that makes an angle of 15.0 deg. with respect to the horizontal by holding onto a tow rope parallel to the slope. Determine the magnitude of the force exerted by the rope on the skier if the skier is moving with a constant speed of 2.0 m/s?
A 4kg mass rests on a tabletop and is attached to a spring with the spring constant 100N/m. find the equation of motion for the oscillator
A conducting rod AB sliding with constant speed v=2m/s on conducting rails in a uniform magnetic field with B= 0.15T. What is the current in the rod
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
In a single slit diffraction experiment, a beam of monochromatic light of wavelength 640 nm is incident on a slit of width 0.400 mm. what are the positions of the first dark fringes
suppose you have a heat engine operating between 230 C and 100.0 c. it achieves 20.0% of the maximum possible efficiency(carnot Efficiency). what energy input will enable the engine to perform 12.0 kJ of work?
In a 280-turn automobile alternator, the magnetic flux in each turn is ?B = 2.50 multiply.gif 10-4 cos ?t, where ?B is in webers, ? is the angular speed of the alternator, Determine the maximum emf in the alternator
An electron is accelerated by a constant electric field of magnitude 325 N/C. (a) Find the acceleration of the electron. m/s2 (b) Use the equations of motion with constant acceleration to find the electron's speed after 9.00 10-9 s, assuming it st..
A projectile of mass 0.702 kg is shot straight up with an initial speed of 16.1 m/s. How high would it go if there were no air resistance
A 426 kg bear grasping a vertical tree slides down at constant velocity. The acceleration of gravity is 10m/s2. What is the friction force that acts on the bear? Answer in units of N.
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 9.20 cm. how long does it take a ripple passing the cork to reach the shore
Consider an electron moving with a speed of 8.60 106 m/s at right angles to a constant magnetic field, with B = 1.9 T
An object has a total energy of 5.0 x 10^15 J and a kinetic energy of 2.0 x 10^15 J. What is the magnitude of the object's relativistic momentum
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