answers please! An electron of mass 9.11 * 10 -31 kg has aninitial speed of 5.00

Question

answers please!
An electron of mass 9.11 * 10-31 kg has aninitial speed of 5.00 *105 m/s. It travels in a straight line, and its speedincreases to 8.00 * 105m/s in a distance of 9.00 cm. (a) Assuming its acceleration is constant,determine the force exerted on the electron. ___________ N (in the direction ofmotion)

(b) What is the ratio of this force to the weight of the electron,which we neglected?
answers please!
An electron of mass 9.11 * 10-31 kg has aninitial speed of 5.00 *105 m/s. It travels in a straight line, and its speedincreases to 8.00 * 105m/s in a distance of 9.00 cm. (a) Assuming its acceleration is constant,determine the force exerted on the electron. ___________ N (in the direction ofmotion)

(b) What is the ratio of this force to the weight of the electron,which we neglected?

Explanation / Answer

u(initial speed)=5x105 m/s v(final speed)=8x105 m/s S=0.09m v2-u2=2aS 1010(64-25)=2*a*0.09 3.9x1011/2*0.09=a a=2.167x1012 m/s2 F=ma =9.11x10-31*2.167x1012   =1.974x10-18N F/mg=ma/mg =a/g =2.167x1012/9.8 =2.2x1011

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.