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A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coefficient of kinetic friction between the sled and the trail?
A double prism is made by joining two thin glass prisms of different refractive index such as crown glass and flint glass, Determine the prism angle of the crown prism
A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..
The lens and mirror are separated by d = 1.00 m and have focal lengths of +80 cm and -50 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.
An electron on from the sun enters the earth's magnetic field high above its surface and undergoes a cicular motion. Calculate the raduis of the circle
A rod is 0.5100 m long at 25C. At 225C the rod is loaded with a stress of 2 76 MPa and its length is found to be 0.5358 m, calculate the coefficient of thermal expansion for this material
At the edge of town, the driver again accelerates. the driver would usually maintain a constant acceleration that is less than the maximum
Two identical speakers are driven by the same oscillator @ 200Hz. They are located on a vertical pole & 4.00 m apart. A man walks straight towards the lower speaker perpendicular to the pole.
A computer is reading data from a rotating CD-ROM. At a point that is 0.030m from the center of the disk, centripetal acceleration is 120m/s2. What is the centripetal acceleration at a point that is 0.05 m from the center of disc.
Each plate of a parallel-plate capacitor is a square of side 3.89 cm and the plates are separated by 0.539 mm. Find the electric field strength inside the capacitor
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
Your Industry has just developed a new sports drink that is in a container which will keep it cool for up to 6 hours. Develop a marketing plan for this product and then write a 3 page paper describing how you would market the product.
The pressure exerted by a phonograph needle on a record is surprisingly large. what pressure is exerted on the record in N/m2
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