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A sled after a final push moves at velocity of 5.0i m/s. However, after 8.0 s later the sled comes to rest. If the mass of the sled is 40 kg, determine the magnitude of the average friction force acting on the sled during this interval?
tennis ball A is dropped from a height of 15 m. Tennis ball B is thrown horizontally from a height of 15 m with a horizontal velocity of 25 m/s
the hot-air balloon shown below is tethered with three mooring cables. the force tb in cable db has a magnitude of 2230
A stone is thrown vertically upward at a speed of 28.40 m/s at time t=0. A second stone is thrown upward with the same speed 2.570 seconds later. At what height do the two stones pass each other
The position of a particle is given by x = 3.9 cos pi t , where x is in meters and t is in seconds. Discover the speed and acceleration of the particle when x = 2.3 m. Discover the maximum speed and maximum acceleration of the particle.
Estimate how many times planet has orbited its star
a circular loop in the plane of the paper lies in a 0.60t magnetic field pointing into the paper. if the loops diameter
A firecracker resting on a level street explodes into three pieces of equal mass. Immediately after the explosion, the first piece is moving north at 125 m/s, and the second piece is moving east at 75.0 m/sec. What is the velocity of the third piece ..
An efficiency expert observing the motion of robotic welding arm in a factory requires to summarize the motion for a report. Obtain the resultant displacement
When a potential difference of 12 is applied to a wire 6.7 long and 0.31 in diameter the result is an electric current of 2.2. calculate the resistivity of the wire
What is the difference between a vector and a scalar? Give at least one example of each. For each example, describe why it is either a vector or a scalar.
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. What is the capacitance of the capacitor
Canadian geese migrate essentially along a north-south direction for well over a thousand kilometres in some cases, traveling at speeds up to about 100 km/h. If one such bird is flying at 100 km/h relative to the air, but there is a 30.0km/h wind blo..
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