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joane

Questions (29)

Einswine has a mass of 300 kg. He sits on an ideal spring. Before he sits on the spring it is 2 m tall. After he sits on the
1. 1 answer
2. 725 views
Market demand is given as QD = 200 – 3P. Market supply is given as QS = 2P + 100. Each identical firm has MC = 0.5Q and ATC =
1. 3 answers
2. 2,507 views
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 35.9cm apart. The
1. 0 answers
2. 760 views
1. What is the longest wavelength for standing sound waves in a 133.9cm long tube that is open at both ends?b).What is the
1. 0 answers
2. 873 views
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette
1. 1 answer
2. 3,108 views
The sound intensity of 1.2x10-12J/m2s is the threshold of hearing for humans. What is the amplitude of the motion of the air
1. 1 answer
2. 798 views
A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 18.2m/s. What is the amplitude if the
1. 0 answers
2. 776 views
The wave is travelling to the right at 18.2m/s. What is the amplitude if the maximum displacement is 19.9cm and the total
1. 0 answers
2. 520 views
A wave has angular frequency 46.2rad/s and wavelength 3.57m. What is its wave number?b).What is its wave speed?
1. 1 answer
2. 534 views
a). What is the wavelengh of a 2.54MHz ultrasound wave travelling through aluminum?(the speed of sound in aluminum is 6420 m/s)b
1. 3 answers
2. 4,551 views
An athlete at the gym holds a 5.54kg steel ball in his hand. His arm is 80.4cm long and has a mass of 4.26kg. What is the
1. 0 answers
2. 576 views
Three masses are connected by massless rigid rods. Rods AC and CB have length l= 44.8cm. If massA=280.0g, massB=386.0g, and
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2. 1,217 views
A man of mass 76.1kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 23.9kg and is
1. 2 answers
2. 676 views
A block slides down a frictionless plane having an inclination of 18.9deg. If the block starts from rest at the top and the
1. 0 answers
2. 652 views
A 4165.0kg truck is parked on a 15.8deg slope. What is the friction force on the truck?
1. 2 answers
2. 590 views
The following data represents the body mass index in a random group of twelvediabetic patients in a clinic. 18, 28, 31, 14, 25,
1. 1 answer
2. 548 views
1) Entry to a certain University is determined by a national test. The scores on thistest are normally distributed with a mean
1. 1 answer
2. 2,016 views
A stubborn, 191.0kg mule sits down and refuses to move. To drag the mule to the barn, the exasperated farmer ties a rope around
1. 2 answers
2. 645 views
A heavy freight train has a mass of 13200 metric tons. If the locomotive can pull with a force of 755000N, how long does it take
1. 0 answers
2. 468 views
A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back cover are
1. 1 answer
2. 933 views
How far apart are a proton and electron if they experience an electric force of 5.10N?
1. 0 answers
2. 357 views
A charge is to be placed at the empty corner to make the net force at corner A point along the vertical direction. What charge
1. 0 answers
2. 806 views
Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered:As3+ Se2- Br- K+ Ca2+ Ga2+ but i got it
1. 1 answer
2. 438 views
Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered:As3+ Se2- Br- K+ Ca2+ Ga2+
1. 2 answers
2. 547 views
A speedboat starts from rest and accelerates at +1.90m/s^2 for 7.00 s. At the end of this time, the boat continues for an
1. 1 answer
2. 542 views
A ball is thrown vertically upward with a speed of 48.5m/s. What is the ball's velocity after 1.50s?** B). what is the ball's
1. 1 answer
2. 482 views
A ball is thrown vertically upward with a speed of 48.5m/s. What is the ball's velocity after 1.50s?b) What is the ball's height
1. 1 answer
2. 418 views
While you are sitting on a park bench with your friend, you grab his hat and start running in a straight line away from him.
1. 0 answers
2. 525 views
A ballistic pendulum consists of a rectangular wooden block of mass 1.5 kg suspended from a ceiling. A bullet mass 0.025 kg
1. 3 answers
2. 1,181 views

Answers (4)

C 0.65
I am not getting the right answer for part b ! I don't know why though! :(
but i got it wrong .. sok PLEASE HELP!
I don't think b) is correct because im getting an incorrect answer

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