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Tyler
Electrostatic force between 3 molecules?
In gaseous sodium chloride, chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated by 0.240 nm. Suppose a free electron is located 0.439 nm above the midpoint of the sodium chloride molecule. What is the magnitude of the electrostatic force the molecule exerts on it?
2 AnswersPhysics8 years agoMass suspended from a boom? Physics Statics?
A mass M=179 kg is suspended from the end of a uniform boom as shown. The boom (mass=66.0 kg, length=2.40 m) is at an angle θ=60.0 deg from the vertical, and is supported at its mid-point by a horizontal cable and by a pivot at its base. Calculate the tension in the horizontal cable.
Physics9 years agoAsteroids X,Y and Z orbit around a Planet?
Asteroids X, Y, and Z have equal mass of 3.0 kg each. They orbit around a planet with M=3.20E+24 kg. The orbits are in the plane of the paper and are drawn to scale.
In the statements below, TE is the total mechanical energy, KE is the kinetic energy, and PE is the potential energy.
The PE of X at u is .... the PE of Y at m
The PE of Y at u is .... the PE of X at u
The KE of Z at r is .... that at m
The TE of Y is .... the TE of X
The PE of X at r is .... the PE of Z at m
The PE of Y at c is .... that at u
The speed of X at u is .... that at r
The TE of Z is .... the TE of Y
The answers are either "less than" or "greater than" or "equal to"
Please help!
Physics9 years agoDistance determined by linear acceleration and time?
Here is the Question:
The acceleration of a race car for the first few seconds of the race can be approximated by the a(t) = A + Bt linear formula, where t is the time measured in seconds and the values of the constants A and B are: A = 23.1 m/s2 and B = -2.50 m/s3. What is the speed of the car 2.30 s after it starts from rest?
I got the speed (46.5 m/s) by integrating 23.1-2.5x from 0 to 2.3. The second part of the question is what i cant figure out...
How much distance does the car cover during this 2.3 s time period?
I have tried using d=1/2at^2 but that doesnt work....Integrating 46.5 from 0-2.3 also doesnt work. Help me out here? im looking to figure out how far the car traveled....
Incorrect answers:
107m
53.5m
1 AnswerPhysics9 years ago
