Recent content by miamiheat5

what formulas will i need to use?

Ok this I promise will be the last question I need help with again i am not sure how to start the question off. So this question uses information from: question (7) "An electron(mass 9.11x10^-31kg) is accelerated in a uniform E field (E=3.0x10^4 N/C) between two parallel charged plates...

oh you maybe I should thank you for catching my mistake. Do you think you can help me with one other problem. With this one I don't have any work because I don't know where to start. A negative charge -q is fixed to one corner of a rectangle. What postitive charge must be fixed to...

ok this what i did: qE=ma 1.602x10^-19(3.0x10^4)=(9.11x10^-31)a 4.806x10^-15=9.11x10^-31a a=5.27x10^-47 Then: vf^2=vi^2+2ad vf^2=0^2+2(5.27x10^-4709.016) sqroot vf^2=sqroot 1.686x10^-48 vf=1.3x10^-24m/s

what do u mean take account for the electrons charge?

yes and i got v as being 1.3x10^-24m/s

Again I am not ssure what to do. An electron(mass 9.11x10^-31kg) is accelerated in a uniform E field (E=3.0x10^4 N/C) between two parallel charged plates. The separation of the plates is 1.6cm. The electron is accelrated from rest near the negative plate and passes through a tiny hole in the...

ya it should be -1.9

A car travels 10.0km due north, then 8.00km due east, the total trip taking 30.0 minutes. Find (a) the displacement of the car, (b) the average speed (in m/s), and (c) the average velocity (in m/s) a) 10^2+8^2=c^2 164=c^2 c=12.8km tanx=8/10 x=38.7 degrees 12.8km @ 38.7...

A heavy ball is dropped into a lake from a height of 30.0m above the water. it hits the water with a certain velocity and continues to sink to the bottom of the lake at this same constant velocity. It reaches the bottom of the lake 10.0s after it was dropped. How deep is the lake. And the...

A sports car, picking up speed, passes between two markers in a time of 4.1s. The markers are separated by 120m. All the while, the car accelerates at 1.8m/s^2. What is its speed at the second marker? Here is what i did: d = vi(t)+1/2(a)t^2 120=vi(4.1)+1/2(1.8)(4.1)^2 29.3=vi+15.1...

A stone is thrown vertically downward from a 2.00x10^2m high cliff at an initial velocity of 5.00m/s. (a) How long does it take for the stone to reach the base of the cliff? (b) What is the stones final velocity? a) d = vi(t)+1/2a(t)^2 200=5(t)+1/2(9.81)t^2 0= -200 + (5)t +...

A car starts from rest heading due east. It first accelerates at 3.0m/s^2 for 5.0s and then continues without further acceleration for 20.0s. It then brakes for 8.0s in coming to rest. (a) What is the car's velocity after the first 5.0 seconds? (b) What is the car's acceleration over the last...

Suppose a car traveling at 12.0m/s sees a traffic light turn red. After 0.510s have elapsed, the driver applies the brakes, and the car decelerates at 6.20m/s^2. What is the stopping distance of the car, as measured from the point where the driver first notices the red light? Homework...