ICSE − Q & A

A bullet of mass 50 g, is moving with a speed of 5 * 10^2 m/s. The bullet hits a fixed wooden block. it comes to rest after penetrating a distance of 100 mm inside the block. Find the average retarding force exerted by the block on the bullet???

Steps plzzz.

Name 3 fossil fuels that emit CO2 into the atmosphere

+ 2 more questions by gunareddy  

Why is cathode heated indirectly?
asked by Harshi baby (gunareddy) 8 years ago
1

Similarity between ac generator and dc motor
asked by Harshi baby (gunareddy) 8 years ago
1

http://www.respaper.com/yash2000/7818-pdf.html Really helpfull definitions guys!

What are the uses of thermionic emission??

if the amplitude of sound increases by  3 times .wat is the effect on loudness?

+ 1 more questions by niharikamahindroo  

why maximum refraction takes place at the edges of lens? what is the direction of torque?
asked by Nainamahindroo (niharikamahindroo) 8 years ago
0

http://www.respaper.com/shreyasj/4900-pdf.html someone pls do the last current electricity sum?

+ 1 more questions by ruchika16  

why are infrared rays used for photography in fog? please provide a proper answer?
asked by Nina (ruchika16) 8 years ago
3

which lens offers magnification always less than 1>?
Whats the nature of the image?

a material which exhibits fluorescence when
cathode rays fall on it.

WHAT IS BACKROUND RADIATION?? GIVE EXAMPLES?

Group activity. .....lets see what your roll numbers in school are..and see whose roll numbers are similar. Mine is 21