373 Answered Questions for the topic physics C

05/17/21

Electric Potential
Electric Potential Formula: V= K*q/rElectric potential energy Formula: UE= Kq1q2/rWhat is the electric potential energy between a particle with 1*10^-9 C of charge and a particle with -1*10^-9 C of... more
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Physics C Physics Physics B

05/17/21

My question is about the rotatioanal motion
A some is attached to the string.The stone is rotating in a circle, the center is C and the radius is 85cm, at constant speed in a verticle plane, the stone has mass of 50g and it takes 0.12s to... more
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05/11/21

Coulombs law Physics
FORMULA: K*Q1*Q2/R^2keep in mind: the charge of a proton (and the negative charge of an electron) is equal to 1.60218 * 10^-19 C1. What is the force between a proton and an electron which are 1... more
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Physics C

05/09/21

I need help for the below question
|||A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed of 4.0  107 m/s,... more
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Physics C Physics Physics B

05/04/21

Entropy Questions Physics
Give an example of a device that decreases entropy in a specific area (but still increases total entropy in the universe).
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04/27/21

First law of thermodynamics physics basic
Can someone help me with any of these?U=Q-WNote: if thermal energy is lost by the system or if work is done to the system, Q or W is negative. 50J of thermal energy is added to a system, 100J of... more
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Physics C Physics Physics B

04/16/21

help please.. In the figure shown, the volume at point C is 800 L and the pressure is 2 atm. The volume at a is 400 L and the pressure is 5 atm. (a) What is the wor
In the figure shown, the volume at point C is 800 L and the pressure is 2 atm. The volume at a is 400 L and the pressure is 5 atm. (a) What is the work done as the system goes through one complete... more
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04/11/21

If you measure the size of each plate to be 12 cm2, how far apart are the plates, in micrometers?

 A 0.054 μF capacitor is being held at a potential difference of 431 μV. I keep getting an answer 1.967 * 1o^-7 which is wrong. Please explain and show your work. Thanks!
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04/08/21

Specific Heat/Heat Transfer
Glass Liquid Water Oxygen Gas Wood Concrete Gold Carbon Dioxide Gas rank the following substances in the order of their specific heats from lowest to highest.
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04/07/21

Change in Droplet Temperature
A drop of rain falls from a height of 300 m in relation to the ground. The drop first falls uniformly accelerated with an acceleration of 6 m/s^2. At a height of 50 m from the ground the drop is... more
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04/05/21

What is the magnification of the image?

Suppose that you have a converging lens that produces a real image of a small object. The image is at a distance of 150 cm to the left of the lens and the object is at a distance of 75 cm to the... more
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04/05/21

Will the image of the object be on the right side or left side of the lens?

Suppose that you have a converging lens with a focal length of 20 cm and you place a small object at a distance of 25 cm to the right of the lens. I understand the image will be real so just not... more
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04/01/21

Urgent physics help

An electron has mass m=9.1x10-31 kg and charge q = 1.6x10-19 C. In an experiment at Oak Ridge National Laboratory, an electron is accelerated from rest by moving through the electric field between... more
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04/01/21

Urgent physics help
The next three questions relate to this scenario.An electron has mass m=9.1x10-31 kg and charge q = 1.6x10-19 C. In an experiment at Oak Ridge National Laboratory, an electron is accelerated from... more
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03/28/21

What is the distance, in kilometers, of a point outside the sphere from the sphere’s center, if the potential at the point is 5.2 MV?

The surface of a sphere carries a uniform charge 1.45 C. I keep getting 2.509 * 10^3 for r which is wrong. Please show your work and thanks in advance!
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03/28/21

What is the distance between the central maximum in the diffraction pattern and the first place where the intensity is zero due to the single slit effect?
 Suppose the screen is a distance of 1 m from the double-slit. Consider a single slit with a width of 0.0100 mm that is illuminated by light with a wavelength of 600 nm. Note: give your answer in... more
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Physics C Physics Physics B

03/25/21

Physics! I can calculate the electric current flowing through a complex circuit based on resistance and voltage.
solve this and fill in the table below please provide all the steps.Especially on how you found voltage, Current . Thank you (Total: 12V, 3A,... more
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03/25/21

How can I solve this physics question? Someone help please?!
An aluminum wire having a cross-sectional area equal to 6.00  10-6 m2 carries a current of 4.50 A. The density of aluminum is 2.70 g/cm3. Assume each aluminum atom supplies one conduction electron... more
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03/25/21

How can I solve this please? Help Needed!
An isolated charged conducting sphere has a radius R = 16.0 cm. At a distance of r = 22.0 cm from the center of the sphere the electric field due to the sphere has a magnitude... more
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Physics C Physics Physics B

03/25/21

Ballistic Pendulum Problem
My teacher doesn't teach us how to do our homework before we do it so I rely on KhanAcademy for the most part but this one's a bit tough.A dart with mass md is launched toward a block of... more
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Physics C Science Physics

03/25/21

at what altitude above the earth’s surface must they be at?
If a person weighs 882 N on the surface of the earth, at what altitude above the earth’s surface must they be for their weight to drop to 800 N? Explain.
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Physics C Physics

03/24/21

Physics collision problem?
A 0.500 kg sphere moving with a velocity (2.00î - 3.50ĵ + 1.00k) m/s strikes another sphere of mass 1.50 kg moving with a velocity (-1.00î + 2.00ĵ - 2.40k) m/s.If the velocity of the 0.500 kg... more
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03/22/21

please help me with my physics homework
A spherical object (with non-uniform density) of mass 16 kg and radius 0.14 m rolls along a horizontal surface at a constant linear speed without slipping. The moment of inertia of the object about... more
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03/22/21

ahh i need help with my physics homework and its due in 3 days
A uniform disk with a mass of 180 kg and a radius of 1.4 m rotates initially with an angular speed of 1150 rev/min. A constant tangential force is applied at a radial distance of 0.8 m. a) How much... more
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03/20/21

PLEASE I NEED HELP WITH PHYSICS, IVE BEEN TRYING ON THIS QUESTION FOR DAYS
A long, uniform 5 kg rod of length 1.5 m is supported at the left end by a horizontal axis into the page and perpendicular to the rod, as shown. The right end is connected to the ceiling by a thin... more
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