« previous next »

Author Question: A 34-kg child on an 18-kg swing set swings back and forth through small angles. If the length of ... (Read 70 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
on: Jul 29, 2018
A 34-kg child on an 18-kg swing set swings back and forth through small angles.
 
  If the length of the very light supporting cables for the swing is how long does it take for each complete back-and-forth swing? Assume that the child and swing set are very small compared to the length of the cables. A) 4.4 s
  B) 4.8 s
  C) 5.3 s
  D) 5.7 s

Question 2

When a sample of water at 0.0C is cooled to 36.0C and freezes in the process, 935,000 kJ of thermal energy is liberated. What is the mass of this sample of water? For water LF = 334,000 J/kg, LV = 2.
 
  256  106 J/kg, and the specific heat of ice is 2050 J/kg  C. A) 2290 kg
  B) 1145 kg
  C) 2800 kg
  D) 12,700 kg


bookworm410

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Wound dehiscence, back Wound dehiscence, back
Small intestine, micro organisms Small intestine, micro organisms
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
(a) Chicken pox vesicles. (b) Chicken pox on back of young patient. (a) Chicken pox vesicles. (b) Chicken pox on back of young patient.
Endocytosis: Absorption Methods in the Small Intestine Endocytosis: Absorption Methods in the Small Intestine
Video: Blood Flow Through the Kidneys

For a complete list of videos, visit our video library