hardequalsmath
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hardequalsmath:
Group Title
An object in orbit will have one of four shapes: circular, elliptical, parabolic or hyperbolic. Explain how you know that for the orbiting …
 updated 16 minutes ago
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Mathematics

hardequalsmath:
Group Title
What is the minimum theoretical energy required to lift an airplane of weight W to height h?
 updated 2 days ago
 1 reply
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Mathematics

hardequalsmath:
Group Title
Suppose an aircraft takes off from an airport runway.
Question 11. Is the mechanical energy of the aircraft conserved in this process?
…
 updated 2 days ago
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Mathematics

hardequalsmath:
Group Title
Can the net external force on an object in orbit be zero?
 updated 2 days ago
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Mathematics

hardequalsmath:
Group Title
Which student is right?
 updated 3 days ago
 1 reply
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Mathematics

hardequalsmath:
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which student is right?
 updated 3 days ago
 2 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
In space, very cold clouds of gas and dust contract to form new solar systems. What happens to the gravitational potential energy of these c…
 updated 3 days ago
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Mathematics

hardequalsmath:
Group Title
pressure question below
 updated 3 days ago
 5 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
. In space, very cold clouds of gas and dust contract to form new solar systems. What happens to the gravitational potential energy of these…
 updated 3 days ago
 1 reply
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
What is the nature of the gravitational forces the Earth and Sun exert on each other (the Sun is a million times the size of the Earth)?
a…
 updated 3 days ago
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Mathematics

hardequalsmath:
Group Title
What is the nature of the gravitational forces the Earth and Sun exert on each other (the Sun is a million times the size of the Earth)?
…
 updated 3 days ago
 38 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
Two balls of mass = 1.00 kg are floating 10 feet apart. What is the nature of the gravitational forces these balls exert on each other?
a…
 updated 3 days ago
 2 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
Two balls of mass = 1.00 kg are floating 10 feet apart. What is the nature of the gravitational forces these balls exert on each other?
 updated 3 days ago
 2 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
You are the victim of an unfortunate office accident: a massive safe, rolling across the office floor, crushes you against a wall. After yo…
 updated 4 days ago
 1 reply
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Mathematics

hardequalsmath:
Group Title
You are the victim of an unfortunate office accident: a massive safe, rolling across the office floor, crushes you against a wall. After you…
 updated 4 days ago
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Show that the variable p0 is the surface pressure in the equation p = p0 + ρgh. Refer to: Using Zeroes in Equations.
…
 updated 5 days ago
 2 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
Suppose you have a fluid that is NOT incompressible, like air. As you go up in the Earth’s atmosphere the air pressure drops and so does the…
 updated 5 days ago
 1 reply
 2 Medals
Mathematics

hardequalsmath:
Group Title
I need my worked checked: Suppose you suddenly find yourself, without a space suit. The air pressure on the exterior of your body is zero. I…
 updated 5 days ago
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Mathematics

hardequalsmath:
Group Title
I need my worked checked: Suppose you suddenly find yourself, without a space suit. The air pressure on the exterior of your body is zero. I…
 updated 6 days ago
 3 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Suppose you are in a place where the atmospheric pressure is 14.0 pounds per square inch (14 lb/in2). What is the total force being exerted…
 updated 7 days ago
 9 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
If an asteroid hits the Earth it stops moving and has no kinetic energy. What does the Law of Conservation of Energy say has to happen to th…
 updated 4 days ago
 4 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
. How do we know that with falling objects (ignoring air resistance) that heavier objects are subjected to a greater gravitational force?
…
 updated 7 days ago
 4 replies
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Mathematics

hardequalsmath:
Group Title
Pressure/Depth Equation Analysis question below
 updated 7 days ago
 13 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
Pressure/Depth Equation Analysis Question below
 updated 7 days ago
 1 reply
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Suppose we have the system of a block on a horizontal, frictionless surface on which an external force does some work. Does the conservatio…
 updated 11 days ago
 1 reply
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Suppose for some reason you have to walk in bare feet across a short distance covered by broken glass. Would you want the pieces of glass to…
 updated 11 days ago
 9 replies
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Mathematics

hardequalsmath:
Group Title
Suppose for some reason you have to walk in bare feet across a short distance covered by broken glass. Would you want the pieces of glass t…
 updated 11 days ago
 1 reply
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Suppose for some reason you have to walk in bare feet across a short distance covered by broken glass. Would you want the pieces of glass t…
 updated 11 days ago
 5 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
Suppose an object sliding along a frictionless, horizontal table hits a patch of friction, then slides up a frictionless hill and compresse…
 updated 11 days ago
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Mathematics

hardequalsmath:
Group Title
A 10.0 kg block is sliding at 8.94 m/s in a straight line across a horizontal, frictionless surface. The block then passes over a 4.00 m st…
 updated 11 days ago
 9 replies
 2 Medals
Mathematics
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