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Alphonse
Questions (29)
A cylindrical wood puck (density = 0.75 g/cm3 ) is placed into a water bath. The density of water is 1.0 g/cm3. The wood puck
3 answers
1,016 views
A balloon with a mass of 90 kg is filled with helium (density = 0.179 kg/m3). The balloon is spherical and has a diameter of
1 answer
761 views
Suppose you pour water into a container until it reaches a depth of 12 cm. Next, you pour in a 25-cm-thick layer of oil so that
0 answers
1,117 views
A metal surface is struck with light of wavelength 430 nm releasing a stream of electrons. If the 430 nm light is replaced by
1 answer
1,231 views
The kinetic energy of a massive particle is equal to the energy of a photon. The massive particle moves at 1.49 % the speed of
2 answers
610 views
Observing electron interference through an ordinary macroscopic two-slit experiment would be extremely difficult and would
0 answers
901 views
An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by
0 answers
605 views
An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by
0 answers
824 views
An X-ray photon scatters from a free electron with negligible initial kinetic energy at an angle of 121.2 degrees relative to
0 answers
593 views
Monochromatic light of an unknown wavelength passes through a single slit of width 5.59 μm and forms an interference pattern
0 answers
662 views
In an interference of light experiment, coherent light that contains two wavelengths: 640 nm (red-orange) and 425 nm
1 answer
1,037 views
Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the
1 answer
884 views
In an interference of light experiment, coherent light that contains two wavelengths: 640 nm (red-orange) and 425 nm
2 answers
573 views
A 19.5 gram, 56.3 centimeter long steel guitar string is vibrating in its fourth harmonic. It induces a standing wave in a
5 answers
679 views
A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal frictionless surface which subsequently collides with a
5 answers
630 views
Calculate the ratio of the kinetic energy to the potential energy of a simple harmonic oscillator when its displacement is 1/8
2 answers
630 views
Sadly you have become trapped inside the gravity well of a star of mass M = 6.435×10^30kg. At a distance of r0 = 7.543×10^10m
3 answers
572 views
A uniform 2.20 kg sign of height 0.600 m hangs freely from a frictionless pivot. (Its extension into the page is irrelevant:
3 answers
598 views
A uniform 5.32 kg solid sphere of radius 0.344 m that is free to roll on a horizontal surface has a light axle passing through
0 answers
562 views
Two astronauts, each having a mass M are connected by a length of rope of length d have a negligible mass. They are isolated in
2 answers
1,800 views
A sphere with a moment of inertia 0.465mr2 and mass m and radius r rolls without slipping along an inclined track that is
5 answers
644 views
A Ferris wheel (a vertical circle for the purposes of this question) with a radius 42.2 m is initially rotating at a constant
2 answers
738 views
You are riding a merry-go-round on the rim which is turning counterclockwise at a constant angular speed of 0.5 rad/s. Your dog
3 answers
595 views
In the configuration shown (10m incline for m1 and 8m vertical length for m2 with a spring under it, both masses are linked by a
0 answers
509 views
In the configuration shown (10m incline for m1 and 8m vertical length for m2 with a spring under it, both masses are linked by a
2 answers
674 views
A simple pendulum consists of a light rod of length L = 0.9 m anchored at a fixed point (like the ceiling), and a small mass m =
2 answers
1,030 views
A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline
0 answers
605 views
A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline
1 answer
642 views
What is the concentration of each type of ion on a 0.010 molar solution of Lithium sulfate (aq)?
3 answers
598 views
Answers (16)
It's actually 2.63cm.
If the puck had twice the height, how would the submerged depth change? If the puck had twice the radius, how would the submerged depth change?
Sorry for the late reply. Sadly, I didn't any of the ones you mentioned. Did you get #3?
Yeah you're right, it does work. I must have done something wrong the first time. Thanks!
For some reason, it says it's the wrong answer.
Isn't the answer supposed to be in meters?
Did you get #1 and #3?
Thanks for the help!
Thanks! Got it.
Do you have 5,6,7,9,10,11?
yes, it's a=(m2g-m1g-kx)/(m1+m2+(.5)(mP))
It's actually wf=wi(1/.54^2)=wi(3.43) I can't seem to get the second part though.
Yep
Thank you very much!
It gives me the wrong answer for some reason. Thanks for the help though! I appreciate it.
What is the work done by kinetic friction along the length of the incline? What is the work done by the spring while the block is in contact with it? What is the speed with which the block leaves the incline?
