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

Author Question: A catapult is tested by Roman legionnaires. They tabulate the results in a papyrus and 2000 years ... (Read 93 times)

rachel9

  • Sr. Member
  • ****
  • Posts: 495
on: Jul 29, 2018
A catapult is tested by Roman legionnaires. They tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): Range = 0.20 km; angle of launch = /4; landing height = launch height.
 
  What is the initial velocity of launch of the boulders if air resistance is negligible? A) 44 m/s
  B) 1.4 m/s
  C) 22 m/s
  D) 0.69 m/s

Question 2

A 2.0 F capacitor is charged to 12. V and then discharged through 4  106 . How long will it take for the voltage across the capacitor to drop to 3.0 V?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

snackralk

  • Sr. Member
  • ****
  • Posts: 363
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

11.1 s


rachel9

  • Sr. Member
  • ****
  • Posts: 495
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


snackralk

  • Sr. Member
  • ****
  • Posts: 363
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

The Dingo was the first placental mammal introduced to Australia, around 4000 years ago The Dingo was the first placental mammal introduced to Australia, around 4000 years ago
This older woman is exploring new avenues of enjoyment as she avoids stagnation in her later years This older woman is exploring new avenues of enjoyment as she avoids stagnation in her later years
Acromegaly. Acromegaly is a metabolic disorder in which excessive amounts of growth hormone are secr Acromegaly. Acromegaly is a metabolic disorder in which excessive amounts of growth hormone are secr
Pyruvate oxidation results in three changes to pyruvate: Pyruvate oxidation results in three changes to pyruvate:
“Career choice” for many women means leaving their paid jobs for a number of years when they ... “Career choice” for many women means leaving their paid jobs for a number of years when they ...
Jawad makes semi-annual contributions of $2000 starting on his 27th birthday. How much will he ... Jawad makes semi-annual contributions of $2000 starting on his 27th birthday. How much will he ...
Video: Protein digestion - stomach & small intestine

For a complete list of videos, visit our video library