« previous next »

Author Question: What man-made object exceeded the speed of sound long before the invention of the airplane or the ... (Read 26 times)

mikaylakyoung

  • Hero Member
  • *****
  • Posts: 531
on: Jul 27, 2018
What man-made object exceeded the speed of sound long before the invention of the airplane or the bullet?
 
  What will be an ideal response?

Question 2

An automobile initially moving 72. km/hr jams the brakes and skids to a stop in a distance of 24. meters on a dry pavement but stops in 81.6 m for a wet pavement (the auto weighs 2211. lbs, neglect reaction delay).
 
  (a) What is the coefficient of friction for dry weather?
  (b) What is the coefficient in wet weather conditions?
  (c) Is this the STATIC or the KINETIC coefficient?


bassamabas

  • Sr. Member
  • ****
  • Posts: 294
Reply #1 on: Jul 27, 2018
Answer to Question 1

A cracked whip creates a sonic boom.

Answer to Question 2

(a) 0.85
(b) 0.25
(c) kinetic coefficient


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

mikaylakyoung

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 27, 2018
Thanks


bassamabas

  • Sr. Member
  • ****
  • Posts: 294
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Pap smear. Cells of the cervix (shown in the center) change in appearance as they progress through Pap smear. Cells of the cervix (shown in the center) change in appearance as they progress through
The Parallax of a Nearby Object in Space The Parallax of a Nearby Object in Space
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
When young infants hold objects for a long period of time they eventually become habituated to them. When young infants hold objects for a long period of time they eventually become habituated to them.
Beverages Made Over Better Beverages Made Over Better
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
Video: Neuron Type Animation

For a complete list of videos, visit our video library