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

Author Question: A ball is thrown straight upward from ground level with a speed of How much time passes before the ... (Read 111 times)

geoffrey

  • Hero Member
  • *****
  • Posts: 880
on: Jul 29, 2018
A ball is thrown straight upward from ground level with a speed of How much time passes before the ball strikes the ground if we disregard air resistance?
 
  A) 3.7 s
  B) 1.8 s
  C) 1.1 s
  D) 0.6 s

Question 2

A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 100C. At what rate does it radiate energy into empty space? ( = 5.67  10-8 W/m2  K4 )
 
  A) 7.1 W
  B) 0.71 mW
  C) 1.4 kW
  D) 9.9 mW
  E) 3.7 W


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


geoffrey

  • Member
  • Posts: 880
Reply 2 on: Jul 29, 2018
Gracias!

amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Time-course of reprogramming mouse fibroblasts into induced pluripotent stem cells Time-course of reprogramming mouse fibroblasts into induced pluripotent stem cells
A greater number of men than women hold full-time jobs, but the gap is closing because of an ... A greater number of men than women hold full-time jobs, but the gap is closing because of an ...
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ... A 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting ...
A 40.0-kg crate is being raised by means of a rope. Its upward acceleration is 2.00 m/s2. What ... A 40.0-kg crate is being raised by means of a rope. Its upward acceleration is 2.00 m/s2. What ...
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library