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Q. A dragonfly flies from point A to point B along the path 1.30s y1=1.0,x1=2 and y2=6,x2=10.
Find the x and y components of its position vector at point A.
Q. Two cars travel westward along a straight highway, one at a constant velocity of 77 km/h, and the other at a constant velocity of 116 km/h.
(a) Assuming that both cars start at the same point, how much sooner does the faster car arrive at a destination 35 km away?
(b) How far must the cars travel for the faster car to arrive 10 min before the slower car?
How much work is required to stretch the spring. A satellite is in a low circular orbit about the Eart.
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
Suppose a hanging 1 kg lab mass is attached to a 4.0 kg block on the table. If the coefficient of kinectic friction, mu is 0.20, what is the acceleration of the block.
A parallel-plate air capacitor with a capacitance of 245 has the charge of magnitude 0.1502 on each plate. The plates have the separation of 0.323.
A professor's office door is 0.9 wide, 2.2 high, 4.2 thick; has a mass of 23 , and pivots on frictionless hinges. A "door closer" is attached to door and the top of the door frame. while the door is open and at rest, the door closer exerts a torqu..
Two crates, of mass 75.0 kg and 109 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.0 kg crate. What is the force the each crate exerts on the other.
A woman is reported to have fallen 139 ft from a building, landing on a metal ventilator box, which she crushed to a depth of 30 in. She suffered only minor injuries.
What is the speed of the 2 cars as they move together after the collision.
Discover new angles with respect to the x-axis
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
Find out the magnitude of angular acceleration of the wheel
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