« previous next »

Author Question: What is the initial velocity of the projectile, expressed in (m/s) if its density is 18.95 g/cm3 ? (Read 735 times)

camila

  • Hero Member
  • *****
  • Posts: 705
on: Jun 23, 2013
A projectile of volume 340.50 cm3 is fired from a launcher with an intital kinetic energy of 1.99 x 103 kJ.


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Jun 23, 2013
mass = 18.95 x 340.50 = 6452 g

1990000 J = 6452 x v^2 / 2

v = 24.8 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

camila

  • Hero Member
  • *****
  • Posts: 705
Reply #2 on: Jun 29, 2013
Thanks! It was right ;)


« previous next »
 

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Bone density test. Bone density test.
The initial phase of carbohydrate catabolism: glycolysis The initial phase of carbohydrate catabolism: glycolysis
Population Density versus Economic Growth Population Density versus Economic Growth
A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. ... A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. ...
What is the mass of air in a room that measures 5.0 m 8.0 m 3.0 m? (The density of air is ... What is the mass of air in a room that measures 5.0 m 8.0 m 3.0 m? (The density of air is ...
Physics - Pressure, Density, Pascal's Principle Physics - Pressure, Density, Pascal's Principle
Video: Spinal Cord Injury Animation

For a complete list of videos, visit our video library