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

Author Question: Approximately how many times does an average human heart beat in a lifetime? A) 3 1011 B) 3 ... (Read 36 times)

silviawilliams41

  • Hero Member
  • *****
  • Posts: 560
on: Jul 29, 2018
Approximately how many times does an average human heart beat in a lifetime?
 
  A) 3  1011
  B) 3  1010
  C) 3  109
  D) 3  108
  E) 4  107

Question 2

A baseball is thrown vertically upward and feels no air resistance. As it is rising
 
  A) both its momentum and its mechanical energy are conserved.
  B) its momentum is not conserved, but its mechanical energy is conserved.
  C) both its momentum and its kinetic energy are conserved.
  D) its kinetic energy is conserved, but its momentum is not conserved.
  E) its gravitational potential energy is not conserved, buts its momentum is conserved.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

tjayeee

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


silviawilliams41

  • Member
  • Posts: 560
Reply 2 on: Jul 29, 2018
Wow, this really help

cpetit11

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

The human embryo The human embryo
Human Eye Diagram Human Eye Diagram
Karl Marx (1818–1883) believed that the roots of human misery lay in class conflict, the ... Karl Marx (1818–1883) believed that the roots of human misery lay in class conflict, the ...
Human dihydrofolate reductase complexed with ligands Human dihydrofolate reductase complexed with ligands
Human arrival and the extent of the recent extinction wave Human arrival and the extent of the recent extinction wave
Cross-section of a human molar Cross-section of a human molar
Video: Epinephrine/NE (heart rate, altered blood flow, glycogenolysis & bronchodilation)

For a complete list of videos, visit our video library