Thursday

April 17, 2014

April 17, 2014

Posted by **jhenz** on Wednesday, July 29, 2009 at 10:32am.

1.) an electron moving at a speed of 4x10 power of 6 m/s, shot through a sheet of paper which is 3x10 to power of -5 m thick. the electron energyfrom the sheet with with a speed of 2x10 to the power of 6 m/s. find the

a.) acceleration experienced y the electron in passing through the sheet and

b.) time take by the electron to pass through the assuming that the acceleration of the electron constant...

2.) the velocity of a train changes from 0 to 60 km/hr in 20 seconds assuming that is uniformly accelerated ,what is the acceleration..?

3.) a body is moving with a velocity of 4 m/s . it is then accelerated for 5 seconds at the rate of 2 m/s squared.

a.) find the speed at the end of the fifth second.

b.)find the distance covered during the first and fifth seconds.

4.)a speeding motorist traveling 120km/h passes a stationary police officer. the officer immediately begins pursuit at a constant acceleration of 10.0 km/h/s (note the mixed units). how much time will it take for the police officer to reach the speeder,assuming that the speeder maintains a constant speed? how fast will the police officer be traveling at this time..?

5.) a light plane must reach a speed of 30 m/s for takeoff.how long a runway is needed if the (constant) acceleration is 3.0m/s squared?

**Related Questions**

mechanics- physics - An electron moving at a speed of 5 x 10 raise to power 6m/s...

mechanics- physics - An electron moving at a speed of 5 x 10 raise to power 6m/s...

mechanics- physics - An electron moving at a speed of 5 x 10 raise to power 6m/s...

mechanics- physics - An electron moving at a speed of 5 x 10 raise to power 6m/s...

Machanics - An electron moving at a speed of 5 multiply by 10 raise to power six...

PHYSICS PLEASE HELP! - (a)How much work is done by the field in moving the ...

Math - A proton has a size of 1.23x10^-11 and an electron has a size of 1.4x10^-...

physics - An electron is accelerated from rest through a potential difference ...

physics - A force of 64 N is required to keep a model power boat moving at a ...

physics - What is the average force exerted by a shot-puter on a 6.1-kg shot if ...