06/16/20

Does the principle of opportunity cost states that if you have more of one thing you must have less of another
Does the principle of opportunity cost states that if you have more of one thing you must have less of another
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04/28/20

A 20V battery has a current of 1 mA. What is the resistance?
A 20V battery has a current of 1 mA. What is the resistance?
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09/02/19

what is the equation of the parabola in vertex form? vertex = (2,2) point = (3,-1)
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09/02/19

Jogger in the part
A jogger takes the following route to the entrance of their local park: north 120m, west 100m, south 35m, and finally west 50m. It takes them 2 minutes 18 seconds to reach the park entrance.a) What... more
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08/25/19

Since light is an effect of gravity , and gravity creates and regulates escape volocity , is'nt gravity the greatest force and the basis of all natural forces ?
Dark matter and dark energy has the exact same properties as a magnate...with negative and positive ( push and pull ) effects. Could'nt dark matter and dark energy be an effect of mass , or rather... more
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08/15/19

Light as a Wave
We know the light is a form of a wave. We also know wave requires a medium for its propagation. If the light is a form of a wave, then how does it travel in a vacuum, which is not a medium?
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08/11/19

Physics Kinematics
While solving kinematics problem for the motion of an object, a student obtained the following result: a = k –bv, where, a is acceleration, v is speed and k and b are positive constant. Given that... more
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08/02/19

When a ball is tossed straight up, does it experience momentary equilibrium at top of its path?
This question has been asked many times all over the Internet and answers can be found on places such as yahoo and ask.com, but I'm not satisfied with those answers and I don't trust the validity... more
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08/02/19

Why don't we consider jerk in physics classes?
When I got more into physics, I started asking myself if just like acceleration represents the growth of speed, something else could also represent the growth of acceleration itself. And it came... more
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08/01/19

homework help please
Assume that you take out a $4000 loan for 21 months at 3.5% APR. How much total interest will you have paid at the end of the 21 months? (Round your answer to the nearest cent.) $ ?
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07/31/19

What are the two pillars of modern physics?
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07/31/19

What are the branches of modern physics?
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07/31/19

Torque direction meaning?
I apologize if this question is dumb, but I've looked all over for a straightforward answer and either I can't find one or the terms are too complex for me to understand. I have only a rudimentary... more
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07/31/19

Monthly WIP Inventory
If your work in process inventory increases in a month what account would you credit?
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07/31/19

What are the topics under modern physics?
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07/30/19

What are at least 5 differences between classical and modern physics?
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07/30/19

Sandstone getting soaked with water?
I have seen someone putting a sandstone in water. With only about 10% of the stone sitting in the water. One could see the stone getting soaked with water. So there must be a force, which lets the... more
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07/21/19

How can I get the wave function of a single electron in the double slits experiment?
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05/11/19

radius of curvature for a convex mirror
It is desired that a convex mirror produce a magnification of 0.21 when an object is placed 32 cm from the mirror. What radius of curvature must the mirror have?
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05/06/19

Which specific law of physics is broken by the "double jump"?
So, there's a cliche in computer gaming known as a "double jump". This can be described as: >A character jumps from a solid surface, and then is able to extend their jump by carrying out the... more
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05/06/19

Doesn't a box holding a vacuum weigh the same as a box full of air?
This was recently brought up, and I haven't been able to conclude a solid answer. Let's say we have two identical boxes (`A` and `B`) on Earth, both capable of holding a vacuum and withstanding 1... more
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05/06/19

If gravity isn't a force, then how are forces balanced in the real world?
Consider a simple situation like this- an object is sitting on a table. In classical mechanics, we say that the net force on the object is zero because gravity (treated as a force) and normal... more
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05/03/19

magnets and force
A spring has a force constant of 520.5 N/m. Find the potential energy stored in the spring when the spring is a) stretched 4.50 cm from equilibrium. Answer in units of J.b) compressed 2.52 cm from... more
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05/03/19

magnets and force
An ideal spring obeys Hooke’s law: F~ = −k ~x. A mass of m = 0.3 kg hung vertically from this spring stretches the spring 0.2 m. The acceleration of gravity is 9.8 m/s 2 . Calculate the value of... more
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05/03/19

magnetic force in physics
An electron in a vacuum is first accelerated by a voltage of 15600 V and then enters a region in which there is a uniform magnetic field of 0.689 T at right angles to the direction of the... more
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