« 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 736 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?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Projectile Motion Projectile Motion
Cell Grown in 15N and 14 N: Graph of Relative DNA Concentration Vs. the Density Cell Grown in 15N and 14 N: Graph of Relative DNA Concentration Vs. the Density
World population density World population density
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
Physics - Density, Pressure, and Pascal's Principle Physics - Density, Pressure, and Pascal's Principle
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ... What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...
Video: Apicomplexan life cycle Animation

For a complete list of videos, visit our video library