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A chimney sweep is climbing a long ladder that leans against the side of a house. If the displacement of her feet from the base of the ladder is given by (2.1 feet, 65 degree) when she is on the third rung, find the displacement of her feet from the base when she has climbed twice as far?
A boat carrying a load of bricks is floating in a canal lock. One of the crew members throws a brick overboard, and it sinks. Does the level of the water in the lock rise or fall
A wooden raft has a mass of 81 kg. while empty it floats in water (density 1000 kg/m3) with 64% of its volume submerged. What mass of sand can be put on the raft without it sinking.
A 0.30 kg puck, initially at rest on a frictionless horizontalsurface, Find the fraction of kinetic energy lost in the collision
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
A cork ball of mass 1.20 g is placed between two very large horizontal planes of charge. The bottom plane has a uniform charge density of +0.68 uC/m2, What is the charge on the ball
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.45 m diameter wheel. What's the rod's oscillation frequency when the train is moving at 30 m/s
four charges are evenly spaced along the x axis with a separation distance d3cm. the values of the charges are q1 2
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
a suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other taking 4.00 s. then
Condensation occurs on a bathroom window at a rate of 0.5 kg per hour. If the bathroom air is at 26°C and fully saturated with water vapour, compute approximately, the rate of heat transfer onto the window surface if the inside surface is maintain..
a particle with mass 2.30 g and charge 10.0 c enters through a small hole in a metal plate with a speed of 8.50 ms at
A roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.578 m/s, Find the height of the table
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