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Ladders are likely one of the most misused pieces of equipment in construction and at home. Share with the class a time when you (or someone you know) experienced a ladder-related fall or close call. What standards that were not followed can you identify in the incident?
Select a ball from an urn containing balls numbered 1 to 3. Suppose balls 1 and 2 are black and ball 3 is red. Note the number and color of the ball drawn.
The charge on a capacitor is initially -2 microC and growing linearly with time. what is the resistance of the lightbulb
A parallel pate capacitor has two dieletric slabs between the plates with interface normal to E and D. the thickness of each slab is 1 cm,area is 100cm2.
Consider a 0.20-kg ball interacting gravitationally with the earth. What is the system's total energy at this time
The apparent weight of passengers on a roller coaster increases by 52 as the car goes through a dip with a 35 radius of curvature. What is the car's speed at the bottom of the dip
Two satellites are in circular orbits around a planet that has radius . One satellite has mass 88.0 , orbital radius 5.60×107 , and orbital speed 4800. What is the orbital speed of this second satellite
A 92-kg skier is sliding down a ski slope that makes an angle of 30 degrees above the horizontal direction. what is the acceleration of the skier
Original problem: a person walks at constant speedv1 along a straight line from A to B and then back alongthe line from B to A at constant speed v2. What is theaverage speed over the entire trip
When laser light of wavelength 633.4nm passes through a diffraction grating, the first bright spots occur at 17.8 degrees from the central maximum. At what angles do the third bright spots occur
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.23 10-3 g. Find the temperature inside the box
If she hears the rope hit the ground 5.31 seconds later, how deep is the pit? Assume the speed of sound in air 345.0 m/s
Two small insulating spheres with radius 4.00×10-2 are separated by a large center-to-center distance of 0.595. One sphere is negatively charged, with net charge -2.40, and the other sphere is positively charged, with net charge 3.70. The charge i..
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