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A 5.0 g hollow plastic ball is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally submerged, the tension in the thread is 3.2 ? 10-2 N. Determine the diameter of the ball.
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A 3000 kg truck is heading east at 80 mph. A 1000 kg car is heading north at 40 mph. They collide and stick togther. What is the velocity and direction of the car/truck
What is the radius of a hydrogen-filled balloon that would carry a load of 3700 N (in addition to the weight of the hydrogen) when the density of air is 1.29 kg/m3
Two large, parallel, conducting plates are 23 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of2.5 10-15 N acts on an electron placedanywhere between the two plates.
How much heat in joules is needed to raise the temperature of 4.0 L of water from 0°C to 80.0°C? (Hint: Recall the original definition of the liter.)
q1. a water-skier is moving at a speed of 14.7 ms. while she skis in the same direction as a travelling wave she
A concave mirror is to form an image of the filament of a headlight lamp on a screen 8.00m from the mirror. To what radius of curvature should you grind the mirror
Two identical pucks are on an air table. Puck A has an initialvelocity of 2.3 m/s in the positivex-direction. Puck B is at rest. Puck A collides elastically with puck B and A moves off at 1.0 m/s at an angle of +60° above thex-axis.
An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. Compute its velocity when the cable snapped
Two masses m1=12 kg and m2= 35 kg are held connected by a massless rope hung over a frictionless light pulley. what is the tension of the magnitude in the string
At highway speeds, a particular automobile is capable of an acceleration of about 1.6m/s2. At this rate, how long does it take to accelerate from 80 km/h to 110 km/h?
A steel section of the Alaskan pipeline had a length of 65 m and atemperature of 22°C when it was installed. What is its change in length when the temperature dropsto a frigid -48°C?
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