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Q1. While exploring a cave, a spelunker starts at the entrance and move the lowing distances. She goes 75.0m north, 250m east, 125m at an angle 30o north of east, and 150m south. Find her resultant displacement from the cave entrance.
Q2. Air traffic observes two aircrafts on his radar screen. The first is at an altitude 800m, horizontal distance 19.2km and 25o south of west. The second is at altitude 1100m, horizontal distance 17.6km and 20o south of west. What is the distance between the two aircrafts? (Place the x-axis west, the y-axis south, and the z-axis vertical)
Q3: A Rocket fires two engines simultaneously. One produces a thrust of 725N directly forward, while the other gives a 513N thrust at 32.4o above the forward direction. Find the magnitude and direction (relative to forward direction) of the resultant force that these engines exert on the rocket.
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
Find the magnitude of the electron acceleration. Under an influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
a 1.91-kg solid sphere radius 0.130 m is released from rest at the top of a ramp and allowed to roll without
the earth takes slightly less than one day to complete one rotation about the axis passing through its poles. what is the angular speed of the earth about its axis
on a frozen pond a 10kg sled is given a kick that imparts to it an intial speed of v0 2.0ms. the coefficient of the
Two identical rods each of length L and charge Q are perpendicular to each other and separated by a distance D, where the distance D is from the middle of one rod to the nearest tip of the other.
A transformer has 350 primary turns and 1290 secondary turns. The input voltage is 120?V and the output current is 15.5A . Assume100% efficiency, What is the output voltage
In 1939 or 1940, Emanuel Zacchini took his human-cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net, If he reached maximum height over the middle wheel, by how much did he clear it
A coin is located 27.9 cm to the left of a converging lens (f = 20.0 cm). A second, identical lens is placed to the right of the first lens, Find the separation between the lenses
A current with sinusoidal time-dependence, whose peak value is 5.55 A and frequency is 775 cycles per second, Calculate the average power dissipated by the loop, if its resistance is 64.3
A 818 kg car is going 28 m/s and the driver has to slam on his brakes to prevent an accident. find the change in temperature of the brake pads and rotors
A hollow sphere is rolling along a horizontal floor at 7.0 m/s when it comes to a 39^circ incline. How far does it go up the incline before coming to a stop and roll back down.
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