« previous next »

Author Question: Jason takes off across level water on his jet-powered skis. The combined mass of Jason and skis is ... (Read 51 times)

hubes95

  • Hero Member
  • *****
  • Posts: 561
on: Jul 29, 2018
Jason takes off across level water on his jet-powered skis. The combined mass of Jason and skis is 75 kg (the mass of the fuel is negligible). The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.1.
 
  Unfortunately, the skis run out of fuel after only 90 s. What is Jason's top speed? A) 150 m/s
  B) 240 m/s
  C) 24 m/s
  D) 90 m/s

Question 2

Two identical loudspeakers that are 5.00 m apart and face toward each other are driven in phase by the same oscillator at a frequency of 875 Hz. The speed of sound in the room is 344 m/s.
 
  If you start out standing midway between the speakers, find the shortest distance you can walk toward either speaker in order to hear a minimum of sound.
  A) 0.197 m B) 0.295 m C) 0.0983 m D) 0.393 m E) 0.590 m


shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Liquid Water Properties compared with n-pentane, nonpolar, non-hydrogen bonding liquid Liquid Water Properties compared with n-pentane, nonpolar, non-hydrogen bonding liquid
How water moves through a tree How water moves through a tree
Most Americans obtain their drinking water from a community water system Most Americans obtain their drinking water from a community water system
Water as a Solvent Water as a Solvent
Cohesion–tension theory of water transport in vascular plants Cohesion–tension theory of water transport in vascular plants
Hydrozoan. Hydra, a freshwater species capturing and digesting a water flea. Hydrozoan. Hydra, a freshwater species capturing and digesting a water flea.
Video: Embryonic development - Week 4

For a complete list of videos, visit our video library