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A river has a steady speed of 0.490 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point.
(a) If the student can swim at a speed of 1.10 m/s in still water, how long does the trip take?___s
(b) How much time is required in still water for the same length swim?___s
What is the radius r of the iron ball?
A 10 ball of clay traveling east at 9 collides and sticks together with a 40 ball of clay traveling north at 6.5. What is the speed of the ball of clay.
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90cm, what was the speed of the bullet at impact with the block.
This problem introduces the concept of tension. The instance is a rope, oriented vertically, that is being pulled from both ends. Let and (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope..
How much current is contained within the width of a thin ring concentric with the wire if the ring has the radial width of 12.0 µm and is at a radial distance of 1.2 mm.
An 80 driver gets into an empty taptap to start the day's work. The springs compress 1.8×10-2. What is the effective spring constant of spring system in the taptap.
How various people can the raft hold before they start getting their feet wet, assuming the average person has a mass of 64? Do not avoid the weight of the logs. Assume the specific gravity of wood is 0.70.
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute .
What is the current in the wire.
Uniform rate of acceleration
The spheres are touched together and are then returned to their original separation d. Illustrate what is the force between them.
At the same time, car 2 is 1.2 east of mile marker 0 travelling at 30 due wests. Car 1 is speeding up with an acceleration of magnitude 0.20, and car 2 is slowing down with an acceleration of magnitude 0.60.
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