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

Author Question: An unfueled 1000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of ... (Read 792 times)

mydiamond

  • Hero Member
  • *****
  • Posts: 804
on: Jul 28, 2018
An unfueled 1000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of propellant. It exhausts the propellant in a 20 s burn.. If the rocket, initially at rest, moves at 160 m/s after the burn, what impulse is experienced by the rocket sled?
 a. 1.1  105 kgm/s
  c. 1.5  105 kgm/s
  b. 1.6  105 kgm/s
  d. 1.9  105 kgm/s

Question 2

Two point charges, separated by 1.5 cm, have charge values of +2.0 and -4.0 C, respectively. Suppose we determine that 10 field lines radiate out from the +2.0-C charge. If so, what might be inferred about the -4.0 mC charge with respect to field lines?
 a. 40 radiate in
  c. 5 radiate out
  b. 20 radiate out
  d. 20 radiate in


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mk6555

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


mydiamond

  • Hero Member
  • *****
  • Posts: 804
Reply #2 on: Jul 28, 2018
TY


mk6555

  • Sr. Member
  • ****
  • Posts: 310
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Three routes of tissue-level transport in plants: transmembrane, symplastic, and apoplastic. Three routes of tissue-level transport in plants: transmembrane, symplastic, and apoplastic.
Acute Stress, Glucocorticoid Level, Synaptic Plasticity, and Learning Acute Stress, Glucocorticoid Level, Synaptic Plasticity, and Learning
Level II HCPCs Codes Level II HCPCs Codes
Reaction 7: The First Substrate-Level Phosphorylation Reaction 7: The First Substrate-Level Phosphorylation
A Drug’s Plateau Level A Drug’s Plateau Level
Keeping your feelings to yourself may increase your stress level Keeping your feelings to yourself may increase your stress level
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

For a complete list of videos, visit our video library