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A trolley,mass 5kg moves at 4m.s east across a frictionless horizontal surface. A brick of mass 1.5kg is dropped onto the trolley . Calculate the change in momentum of the 5kg trolley
3 types of measuring instruments and it's readings(including uncertainty)
What atom consitutes the molecule?
What atom consitutes the molecule? how many carbon atoms?
How many electrons, protons, and neutrons do the buckminsterfullerene have.
The bone breaks if stress greater than 1.50 x 10 8 N/m 2 is imposed on it. (a) What is the
maximum force that can be exerted on the male humerus in the upper arms if it has a
minimum effective diameter of 5.87 cm? (b) If this much force is applied, by how much
does the 27.0-cm-long humerus stretched? Assume Young’s modulus for bone is 1.50 x
10 10 Pa.
How a circularly polarized light can be changed into plane polarized light
A 100g sample of Aluminum ( C= 0.90J/gC)at 120°C and a 150g sample of Iron metal (C=0.45J/C)at 90°C were placed in a container of 80g of water at 15°C. What is the final temperature of the mixture?
Can you show me the solution?
A compact fluorescent lamp (CFL) uses less energy than its equivalent incandescent bulb. How much will a person save if he/she uses a 20 W CFL instead of a 100 W incandescent lamp for 6 hours in 30 days? Electricity is priced at ₱ 8.17/kW.h.
Find the pressure exerted on a person by a few plastic blocks of total mass 42 kg, the bottom of which in contact with the person has an area of 840 cm2.
Your job is to lift 25.0 kg packaged baxes a vertical distance of 1.0 m from the ground onto the bed of a delivery truck. How many packaged boxes would you have to load onto the truck in one minute for your average output power that goes into lifting the boxes to be 0.11 hp?
