« previous next »

Author Question: When U-239 emits a beta particle, the resulting nucleus has A) 90 protons. B) 91 protons. C) 92 ... (Read 53 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
on: Jul 29, 2018
When U-239 emits a beta particle, the resulting nucleus has
 
  A) 90 protons.
  B) 91 protons.
  C) 92 protons.
  D) 93 protons.
  E) 94 protons.

Question 2

A 50.0-kg block is being pulled up a 16.0 slope by a force of 250 N which is parallel to the slope. The coefficient of kinetic friction between the block and the slope is 0.200. What is the acceleration of the block?
 
  A) 0.528 m/s2
  B) 0.158 m/s2
  C) 0.412 m/s2
  D) 0.983 m/s2
  E) 0.260 m/s2


kjohnson

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Diagram of a cell nucleus Diagram of a cell nucleus
Examples of four different types of cells from the body. Although each cell has a cell membrane, nuc Examples of four different types of cells from the body. Although each cell has a cell membrane, nuc
Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg
The nucleus of Halley's Comet, taken by the Giotto probe in 1986 The nucleus of Halley's Comet, taken by the Giotto probe in 1986
Beta-Adrenergic Blockers Used for Dysrhythmias Beta-Adrenergic Blockers Used for Dysrhythmias
In 1964 a team of Russian scientists smashed a neon nucleus into a plutonium tar In 1964 a team of Russian scientists smashed a neon nucleus into a plutonium tar
Video: What is Reverse Osmosis?

For a complete list of videos, visit our video library