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(A) A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling on an adjacent wall at a point having coordinates (2.0, 1.0), where the units are meters, what is the distance of the fly from the corner of the room?
(B) Express the location of the fly in polar coordinates.
Two sinusoidal waves of the same frequency travel in the same direction along a string. If ym1 = 5.5 cm, ym2 = 4.2 cm, ?1 = 0, and ?2 = ?/4 rad, what is the amplitude (in cm) of the resultant wave?
What is the average induced emf in the coil in mV. If he is crossing a river where the current is 1.60 km/h, in what direction should his boat be headed if he wants to reach the point directly opposite his starting point.
To start a jump this insect can accelerate at 4m/s^2 over a distance of 2.0mm. What is the upward velocity it takes off at
A square whole 9.00cm along each side is cut in a sheet of copper. Does the area increase or decrease? What is the change in area of the hole when the temperature of the sheet is increased by 60.0 K?
A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch
A 17 ?F capacitor is charged to 20 V and is then connected across a 11 mH inductor. What is the frequency of oscillation of the circuit
When two identical ions are separated by a distance of 8.3×10?10m , the electrostatic force each exerts on the other is 5.4×10?9N How many electrons are missing from each ion
A bead of mass m, acted upon by a uniform graviational force,can slide freely on a frictionless circular hoop of radius R. Determine the Langrangian for the bead
The hot reservoir of a heat engine is steam at 100?C while the cold reservoir is ice at 0?C. In 1.2hrof operation, 11kg of steam condenses, What is the power output of the heat engine
in us football after a touchdown the team has the opportunity to earn a point by kicking the ball over a bar between
Christian is making a Tyrolean traverse as shown in the figure. That is, he traverses a chasm by stringing a rope between a tree on one side of the chasm and a tree on the opposite side, 23m away.determine the tension force in the rope
A cannonball (20kg) is shot from a cannon(200kg) with a velocity of 20m/s. what is the backwards velocity of the cannon
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