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A car is driven east for a distance of 49 km, then north for 23 km, and then in a direction 28° east of north for 28 km. Determine
(a) the magnitude (in km) of the car's total displacement from its starting point and
(b) the angle (from east) of the car's total displacement measured from its starting direction.
At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten..
A 5.00 mL syringe has an inner diameter of 6.00 mm, a needle inner diameter of 0.210 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100..
A 8.0 µC point charge and a 9.0 µC point charge are a distance L apart. Where should a third point charge be placed so that the electric force on that third charge is zero?
A driver wearing a seatbelt decelerates at roughly the similar rate as the car itself. Since modern cars have a "crumple zone" built into the front of the car, the car would decelerate over a distance of roughly 1.20 m. Determine net force acting ..
A horizontal force of 80N is required to push a piece of furniture across a floor at a constant velocity, what is the net force acting on the furniture
A satellite is in orbit 4.2*10^7 m from the center of Earth with a speed of 7,800 m/s. what is the mass of the satellite
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. What is the final number of molecules Nf after this process
Assume that, as lying on a beach near the equator watching the Sun set over a calm ocean, you start a stopwatch just as the top of the Sun disappears. You after that stand, elevating your eyes by a height H = 1.90 m.
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
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