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A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal.
(a) How much work is done by this force as the object moves 6.0 m?
(b) If the frictional coefficient between the object and the surface is 0.2 how much of the work is "lost" to friction during these 6.0 m.
(c) What is the velocity of the object after 6.0 m if the object starts at rest?
(d) How much work is done by the gravitational force?
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 183 MeV, How many nuclei are in the beam
A spring with 58 hangs vertically next to a ruler. The end of the spring is next to the 11- mark on the ruler. If a 2.5- mass is now attached to the end of the spring, illustrate where will the end of the spring line up with the ruler marks?
The bob of a simple pendulum that is 1.00m long is held so the sting is horizontal and just taut. How fast is the bob moving when the string makes a 30.0degree angle with the vertical
find the following for the time at which the cart is at position P2, with one-third of the loop in the magnetic field.
At our distance from the Sun, the intensity of solar radiation is 1370 W/m2. Compute its steady-state temperature
A thin rectangular plate of uniform area density ?1 = 1.14 kg/m2 has a length a = 0.540 m and a width b = 0.230 m. find the distance from the origin of the resulting plate's center of mass
An auto goes from 0 to 30 m/s in 5 s, at a uniform rate of acceleration. The radius of the auto's tires is .33 m. How many revolutions per second are the tires making
A small metal particle passes downward through a fluid medium while being subjected to the attraction of a magnetic field such that its position is observed to be s = (15t3 - 3t) mm, where t is measured in seconds. Determine (a) the particle's dis..
An electric dipole consisting of charges of magnitude 1.90 nC separated by 7.00 µm is in an electric field of strength 1190 N/C, find the difference between the potential energies for dipole orientations parallel
A simple pendulum consists of a ball connected to one end of a thin brass wire. find the change in the period of the heated pendulum
A Klingon spacecraft moves away from Earth at a speed of -.8c. With what speed is the Klingon craft moving as measured by the crew of the Enterprise
A mountain climber wears a goose down jacket 3.3cm thick with total surface area 1.2m^2 . The temperature at the surface of the clothing is -20C and at the skin is 34 C. Determine the rate of heat flow by conduction through the jacket
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