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4) A 20-meter, 30-kg chain is hanging on the side of a building, with one end...
A 100 N cube that is 1 meter on each side is put into a pond. How much of its volume will be underwater as it floats? (Use g = 10 m/s2) A 10 gram ice cube is taken out of the freezer at -20 °C. How much heat is needed to melt it completely? The specific heat of ice is 2.04kJ/kg/K and the Latent heat of fusion of ice is 335kJ/kg. A strong wind blows over the flat rooftop...
A 1 kg mass is hanging off the 0 cm mark of a massless meter stick that is resting on a fulcrum at the 20 cm mark. How much mass must be placed at the 100 cm mark in order to make the meter stick balance? 1/4 kg 1/2 kg 1/5 kg 2/3 kg 1/3 kg
A steel girder weighing 800 Ib is hoisted from ground level to tihe roof of a 30-ft building using chain that weighs 2 lb/running foot. Find the work done. a W F d
A steel girder weighing 800 Ib is hoisted from ground level to tihe roof of a 30-ft building using chain that weighs 2 lb/running foot. Find the work done. a W F d
A solid disc of mass 16-kg and radius 50 cm has a mass of 4-kg hanging from one side by a massless string. The disc acts like a frictionless pulley and rotates freely about its center. Once released from rest, how much time does it take for the wheel to rotate through 20 revolutions? (A) 2 Squareroot 2 pi seconds (B) Squareroot 2 pi seconds (c) 2 Squareroot pi seconds) D) Squareroot pi/2 seconds
A 60-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and that the chain has a density of 9 kg/m. Use 9.8 m/s for the acceleration due to gravity. a. How much work is required to wind the entire chain onto the cylinder using the winch? b. How much work is required to wind the chain onto the cylinder if a 50-kg block is attached to the end of the...
A string vibrates with a node at each end is being pulled tight by a hanging mass. How much mass is required to cause a 1.0 meter long string with a linear mass desity of 0.0010 kg/m, to vibrate at the fundamental frequency (n=1) at 120 Hz?
14. A cable is 12 m long and has a density of 5 kg/m. If the cable is hanging with a 20 kg bucket attached, how much work is done winding it up? Sketch what is happening.
14. A cable is 12 m long and has a density of 5 kg/m. If the cable is hanging with a 20 kg bucket attached, how much work is done winding it up? Sketch what is happening.
1. A 4-meter plank weighing 8 kg is lying on a dock with 2.71 meters of its length on the dock, and the rest of its length extending off the dock. If a child weighing 61.2 kg walks out onto the part of the plank extending off the dock, what is the maximum distance in meters that the child can walk on the plank from the edge of the dock before he falls into the water? 2. A man pulls...
a 10 kg child slides down a 4 meter long slide at angle of 30 degrees to the horizontal. at the end of the slide , she is going at a speed of 2.2 m/s. how much energy is converted to internal energy by friction during this slide? (answer in joules) Please explain how to solve this so that I could learn for the future. Thank you!!
tons 415S araw 475 CNMG 333 You have a building that is 425" x 1249'-7" x 20 tall. The building needs to be air-conditioned. One ton of air conditioning will condition 475 square feet How many tons of air conditioning will be needed? (2 points) If 20 ton Roof Top Units (RTU) are to be used, how many RTU's will be required? Round up to the next whole unlt (2 points) Wast are the cubic feet per RTU? (2 points)...