« previous next »

Author Question: The zirconium nucleus contains 40 protons, and an electron is 1.0 nm from the nucleus. What is the ... (Read 15 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 29, 2018
The zirconium nucleus contains 40 protons, and an electron is 1.0 nm from the nucleus. What is the electric force on the electron due to the nucleus? ( e = 1.60  10-19 C, k = 1/40 = 9.0  109 N  m2/C2 )
 
  A) 2.9 nN
  B) 1000 C
  C) 3.7 nN
  D) 6.8 nN
  E) 9.2 nN

Question 2

A 1.0-g bead is at (-2.0 cm, 2.0 cm), a 2.0-g bead is at (2.0 cm, -4.0 cm), and a 3.0-g bead is at (2.0 cm, 0.0 cm). What are the coordinates of the center of mass (or center of gravity) of this system of beads?
 
  What will be an ideal response?


ryansturges

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 29, 2018
Answer to Question 1

E

Answer to Question 2

1.3 cm, -1.0 cm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Electron Microscope Electron Microscope
Nucleus. Nucleus.
Nucleus Nucleus
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv
n electron micrograph revealing nucleosomes appearing as “beads" n electron micrograph revealing nucleosomes appearing as “beads"
Video: Photosynthesis overview Animation

For a complete list of videos, visit our video library