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A plane flies from base camp to lake A, a distance of 280 km at a direction of 20.0 degrees north of east. After dropping off supplies, the plane flies to lake B, which is 190 km and 30.0 degrees west of north from lake A. Graphically determine the distance and direction from lake B to the base camp.
A 23 g ice cube at -4.6 oC is place in an aluminum cup whose initial temperature is 80.56 oC. What is the mass in grams of the cup
The height of a helicopter above the ground is given by h = 2.80t3, where h is in meters and t is in seconds. How long after its release does the mailbag reach the ground
A 10cm long thin glass rod is uniformly charged to +50nC. A small plastic bead, charged to -5.3nC,is 4.4cm from the center of the rod
A uniformly charged ring is 1.0 cm in radius. The electric field on the axis 3.5 cm from the center of the ring has magnitude 2.5MN/C
Three moles of a monoatomic ideal gas are placed in a portable container with a volume of 0.0035 m3. The temperature of the gas is 295°C. What is the average kinetic energy per molecule?
A uniform electric field of magnitude 359 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. What is the work done by the field on the electron? J What is the change in potential ..
A certain siren radiates sound uniformly in all directions. At a distance of 17m from the siren, How many watts of power does the siren put out
a rectangular loop of wire that is 55 cm wide and 20 cm long is placed in a region where the magnetic field is b 0.4
The drawing shows a side view of a swimming pool. The pressure at the surface of the water is atmospheric pressure. What happens to the pressure at the bottom of the pool
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.1 g/m and the tension is 11 N. What is the frequency of the fundamental oscillation
A typical ten-pound car wheel has a moment of inertia of about 0.35kg *m2. What is the rotational kinetic energy K of the rotating wheel
a microscope with an 9.0 mm focal-length objective has a tube length of 14.0 cm for the microscope to be in focus how
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