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Your mass is 50 kg. Suppose you are standing on a scale in an elevator that starts moving up and increases its speed at the rate of 3 m/s every second. What would be the reading on the scale?
Give the center of mass for a water molecule. The distancebetween a hydrogen atom and the oxygen atom is .91 angstroms andthe angle between the two O-H bonds is 105o
A boy exploring a cave drops a rock into a dark crevasse. He hears the rock strike the bottom 10.1 s after dropping it. Find the depth of the crevasse
an automobile and a truck start from rest at the same instant with the automobile initially at some distance behind the
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. (The other 96 W is carried away by convection and conduction.) The filament has surface area of 0.170 mm2 and an emissivity of 0.950. Find the filament's temperature.
A certain airplane has a speed of 250.0 km/h and is diving at an angle of 30.0° below the horizontal when the pilot releases a radar decoy. The horizontal distance between the release point and the point where the decoy strikes the ground is 700 m..
A ceiling fan with 89.00 cm diameter blades is turning at 61rpm. Suppose the fan coasts to a stop 26s after being turned off.
A crane at a Seattle shipyard is raising a 650 kg crate into the air to place it on a ship, as shown in the diagram. What is the tension in the crane cable
A spring (k = 812 N/m) ishanging from the ceiling of an elevator, and a 4.8 kg object is attached to the lower end. By how much does the spring stretch
Estimate the mass and weight of the air contained in a classroom where Thermodynamics is taught. Assume the dimensions to be 3.2 m · 8 m · 20 m.
an equeous solution contaning 0.003 M NaCl and 0.005 M CaCl2 is mixed with the polysacharide alingate to creat aahigh- viscosity liquid, calculate the activity coefficient of all ionic species at 25 C
question a household pays 1850 per year for the supplied electricity. assuming the rate of 0.11 per kwh and 10 hours of
A space station is constructed in the shape of a wheel 25 in diameter, with essentially all of its 5.10×10^5 mass at the rim.
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