Recent content by dois

I'm just looking over an example in my textbook. The example is working with Helium-4. It lists the mass of He (4.002 603u) and then the mass e^- as 0.000 548u. How did they get the mass of e^-?

Homework Statement Calculate the average binding energy per nucleon in the deuterium nucleus. Homework Equations Average binding energy= total binding energy/mass number The Attempt at a Solution Would i first have to find the mass of the nucleus and then the difference in mass? My...

So what I originally did is correct?

E=kq1q2/r^2 k= 9.0x10^9 q1=4.3x10^-6 q2= 1e= 1.602x10^-19 r=0.10 =(9.0x10^9)(4.3x10^-6)(1.602x10^-19)/(0.10)^2 =6.19x10^-13

Could we use, E=kq1q2/r^2 ?

Homework Statement You are observing the effects of single point charge with a magnitude of +4.3muC. If a singe electron is placed 10cm to the right of this charge, what is the magnitude and direction of the electric force it will experience?Homework Equations E= Fe/q E= kq/r^2 The Attempt at...

Would the force on the object due to gravity be 9.8N so the Force required to lift it is 9.8 N

Homework Statement How powerful is a student who can lift 60kg from the floor to above their head (2.5 meters from the ground) in 4 seconds? Homework Equations To find power we would use the equation P= W/T The Attempt at a Solution I'm not sure if we would use the P=w/t equation...

alright, thank you!

oh right, so then F, being the total of all the forces would be... 216N + 10N so F=226N

Would the total of the forces on the object just be the applied force which is 216?

if we were to sub all of our knows into the equation 2 x M= (216-mg) we would get 2 x M= (216 - m x 10) but then where would we go from there

Homework Statement Two chain links are connected together and are suspended by a string. The mass of the top link, link#1 is 8kg, while the mass of the second/bottom link #2 is unknown. If an applied force on the string attached to link #1 of 216N[up], and the links experience an...

Homework Statement Two chain links are connected together and are suspended by a string. The mass of the top link, link#1 is 8kg, while the mass of the second/bottom link #2 is unknown. If an applied force on the string attached to link #1 of 216N[up], and the links experience an acceleration...

So then we would sub a into F=ma so (40kg) (1.6 m/s) and then our answer would be Fnet= 64 kg m/s [E]