This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The nucleus makes up about what percentage of the mass of an atom? a) 25 b) 50 c) 81.3 d) ... (Read 68 times)

jhjkgdfhk

  • Hero Member
  • *****
  • Posts: 569
on: Jul 28, 2018
The nucleus makes up about what percentage of
  the mass of an atom?
   a) 25
   b) 50
   c) 81.3
   d) more than 99

Question 2

A 12-g bullet moving horizontally strikes and remains in a 3.0-kg block initially at rest on the edge of a table. The block, which is initially 80 cm above the floor, strikes the floor a horizontal distance of 120 cm from its initial position. What was the initial speed of the bullet?
 a. 0.68 km/s
  b. 0.75 km/s
  c. 0.81 km/s
  d. 0.87 km/s
  e. 0.41 km/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

choc0chan

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

b


jhjkgdfhk

  • Member
  • Posts: 569
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

vickybb89

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

The iron atom of heme has six coordination bonds: four in the plane The iron atom of heme has six coordination bonds: four in the plane
The Nucleus The Nucleus
The cell membrane, cytoplasm, nucleus, nucleolus, ribosomes, centrioles, and mitochondria. The cell membrane, cytoplasm, nucleus, nucleolus, ribosomes, centrioles, and mitochondria.
Lab: Mass Relationships in Chemical Reaction Lab: Mass Relationships in Chemical Reaction
A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ... A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ...
0.123 g of a gas occupy a volume of 124 mL at 120. °C and 760. torr. Its molar mass is ... 0.123 g of a gas occupy a volume of 124 mL at 120. °C and 760. torr. Its molar mass is ...
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library