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Plus Two Physics

Yarns made of the tiny straws of carbon called nanotubes have an astounding ability to twist as they contract, scientists have found

The team of researchers from Australia, the US, Canada and South Korea demonstrated motors that could spin at nearly 600 revolutions per minute, turning a weight 2,000 times heavier than the yarn itself. Read More

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Ask Physics frac KINEMATICS Project

Problem from relative velocity

A Boat covers certain distance between two spots in a river taking t1 hrs going downstream and t2 hrs going upstream. What time will be taken by boat to cover same distance in still water?
posted by STUTI
Answer:
Incoming search terms:relative velocity…

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Ask Physics charge density Electromagnetism Interesting Questions potential drop Project time answers

Collection of Problems received from Class 12 Physics

These problems were posted by Geena. Hope that we will be able to post the answers to these questions soon; each in a separate post. By the time visitors can attempt to post their answers as comments to this post. (Only selected posts will be published)
 
Please note that the answers are not published until the […]

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Ask Physics brakes Force Mechanics Project

A simple numerical on momentum

Car mass is 1200 kg moving velocity is 108 km/hr. On applying brakes velocity reduced to 36 km/hr. Find change in momentum?
(posted by Aditi)
Answer: m=1200 kg
u=108 x 5/18=30m/s
v=36×5/18=10m/s
Change in momentum = m(v-u) = 1200 x (30-10)=1200 …

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Ask Physics brakes Force Mechanics Project

A simple numerical on momentum

Car mass is 1200 kg moving velocity is 108 km/hr. On applying brakes velocity reduced to 36 km/hr. Find change in momentum?
(posted by Aditi)
Answer: m=1200 kg
u=108 x 5/18=30m/s
v=36×5/18=10m/s
Change in momentum = m(v-u) = 1200 x (30-10)=1200 …

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Ask Physics banking brakes Force friction coefficient friction forces Mechanics Project roads skidding tyre wheel

Numerical Problem from Friction

“The friction coefficient between a road and the tyre of a vehicle is 4/3.find the maximum incline the road may have so that once hard brakes are applied and the wheel starts skidding,the vehicle going down at a speed of 10m/s is stopped within 5m”…

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Ask Physics Current Electricity Electromagnetism Magnetism Project

Direction of magnetic field due to a current carrying conductor

“How do we know the direction of magnetic field around the current carrying conductor?” Asked Nikhil
Incoming search terms:direction of magnetic field around a current carrying conductorDIRECTION OF MAGNETIC FIELD IN CURRENT CARRYING CONDUCTORmagne…