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A 3000-kg truck runs into the rear of a 1000-kg car that wasstationary. The truck and car are locked together after thecollision and move with speed 9m/s.
What was the speed of the truck before the collision?
As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. What is the mass of an astronaut who oscillates with a period of 2.16 when sitting in the chair
Blaise Pascal duplicated Torricelli's barometer using a red Bordeaux wine of density 950 kg/m3 as the working liquid What was the height h of the wine column for normal atmospheric pressure
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
compute the electric flux through a rectangular plane.
A space traveller weighs herself on Earth, at a location where the acceleration due to gravity is 9.81 m/s2, and finds a value of 543 N. What is her mass
A magnetic field has a magnitude of 0.0014 T, and an electric field has a magnitude of 4.2 × 103 N/C. compute the magnitude of the net force that acts on the charge
A point source of light is submerged 2.4 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
A parallel plate capacitor has a capacitance of 8.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
The pitch of the sound from a race car engine drops the musical interval of a third when it passes the spectators. How fast is the race car moving
You cool a 130.0g slug of red-hot iron (temperature 745 ?C) by dropping it into an insulated cup of negligible mass containing 70.0g of water at 20.0 ?C. What is the final mass of the iron and the remaining water
A tornado in the shape of a cylinder with a diameter of 100 m has an axis of rotation through its center which is along the vertical direction. The sense of rotation is cyclonic (counterclockwise). The wind is purely rotational, with a wind speed ..
Water at 100 degrees is flowing through a long pipe of radius 1rapidly enough so that we may assume that the temperature is 100 at all points. A t=0, the water is turned off and the surface of the pipe is maintained at 40 degrees from then on (neglec..
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