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A dock worker applies a constant horizontal force of 78.0 to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 11.0 in the first 4.00 .
What is the mass of the block of ice in kg?
Two small beads having positive charges 18q and q are fixed at the opposite ends of a horizontal insulating rod, extending from the origin (the location of the larger charge) to the point x = d. As, a third small charged bead is free to slide on t..
When an object moves through a fluid, the fluid exerts a viscous force on the object that tends to slow it down. What is the viscous force on a sphere of radius R = 4.90 10-4 m that is falling through water
A 72 kg man stands on a spring scale in an elevator. Starting from rest, elevator ascends, attaining its maximum speed of 1.20 m/s in 0.80 s.
A performer seated on a trapeze is swinging back and forth with a period of 9.28 s. what will be the new period of the system
light from a helium - neon laser is shinedon a slit of width 0.02mm. Describe qualitatively the pattern of light seen on ascreen 1.0 meter away. and how would the pattern be different if the slit were 0.06mmwide instead of 0.02mm?
A 226 kg beam 2.0 m in length slides broadside down the ice with a speed of 30 m/s, How fast does the center of mass of the system move after the collision
The period of the earth around the sun is 1 year and its distance is 150 million km from the sun. An asteroid in a circular orbit around the sun is at a distance 461 million km from the sun. What is the period of the asteroid’s orbit?
A vector has an x component of -23.0 units and a y component of 50.5 units. Find the magnitude and direction of the vector
A 71.0 kg skier is pulled up a frictionless ski slope that makes an angle of 15.0 deg. Determine the magnitude of the force exerted by the rope on the skier
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. what is the new acceleration of the box
An explosive charge breaks an object into two splinters, with respective masses m1 = 1.9 kg and m2 = 5.7 kg. What is the ratio of the separation speeds v2/v1
what are the ax and by components of the vector that must be added to the following three vectors so that the sum of
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