Question:
A 460kg satellite is launched into a circular orbit and attains an orbital altitude of 850km above Earth's surface. Calculate the:
e) additional energy and speed required for the satellite to escape.
Attempt:
I found Ek to be 1.27*10^10 J
Thus, the total energy is...
What am I finding to be confusing..
The graphs of Millikan's data were straight lines with equal slopes. The graph was plotted maimum kinetic energy (eV) versus the frequency of the wave. This was the graph that produced the linear relationship from the photoelectric effect.
What does it mean...
Homework Statement
A Fletcher's trolley apparatus is set up with a block of wood of mass 4.0kg and a suspended mass of 2.0kg.
The Attempt at a Solution
a) Calculate the acceleration of the sys. and the tension in the string when the mass is released.
m1
FnetX = [T - Ff = m1(a)]
FnetY...
Homework Statement
If you are on the merry-go-round going in a circle at constant speed, are you looking at the world in an inertial, or non-inertial frame of reference?
How do we tell whether from one's viewpoint, they are looking at something from an interial or non-inertial frame of reference?
1,2,3. Homework Statement , and work done.
After Lee gives his little sister Kara a big push on a swing, her horizontal position as a function of time is given by the equation x(t) = 3cost(t)*e^{-0.05t} , where x(t) is her horizontal displacement, in metres, from the lowest point of her swing...
Homework Statement
The Sun radiates away energy at the rate of 3.9*10^24 Watts. At what rate it it losing mass due to this radiation?
Homework Equations
E = Δmc^2
E = mc^2 - m0c^2
Where m0 rep. rest mass.
The Attempt at a Solution
For this one, I am unsure as to how I would go...
Problem statement
How fast must a neutron be travelling relative to a detector in order to have a measured kinetic energy that is equal to its rest energy?
An "attempt"
I know
Ek = mc^2 - m0c^2
But if Ek = m0c^2, wouldn't the two terms cancel out from this equation? I am having trouble...
Uh.. That was the first time I ever heard any of those methods, so could anyone give me a few pointers just to show how I start off with one of the methods above?
Homework Statement
Find the zeros of the cubic equation:
y = x^3 -9x^2 + 15x + 30
How do we find the zeros of this? In this case, subbing in x-values that will make it equal 0 does not work.
Homework Statement
Here they are deriving the equation for Young's experiment: http://www.physicsclassroom.com/Class/light/U12L3c.cfm
The part where they start bringing up "Assertion" and "Logic/Rationale" is where I got confused:
They mention for part ii) that if the distance L >>> y, then...
Homework Statement
Sketch the curve defined by g(x) = x^{1/3}*(x+3)^{2/3}
Homework Equations
First Derivative
Second Derivative
The Attempt at a Solution
I attempted to use the algorithm for curve sketching:
1) Find the intercepts
2) First Derivative; look for extrema and points where f'(x)...
Homework Statement
A charge q1 = +4.0nC experiences a force of 3*10^-5N to the east when placed in an electric field. If the charged is replaced by another, q2 = -12nC, what will be the magnitude and direction of the force on the charge at that position?
Homework Equations
Coulomb's Law...
Homework Statement
A parent takes their child to a water slide which is shaped similar to a portion of a parabola (see diagram). There is an elevator 3m from the edge of the pool. The elevator takes the rider to the top of the slide which is 19m above ground. The rider slides down and falls...
If given only the coordinates of the centre of a circle, how would we solve for the "r" value in the circle equation?
Also, how does this make sense? I don't understand why we would use a circle to get the minimum distance.
Homework Statement
You are given point (1,2).
f(x) = 0.199445983x^2 - 3.789473684x + 19
f'(x) = 0.398891966x - 3.789473684
You also know (0,19), (9.5,1) <-- this is the vertex.
This graph has the domain 0≤ x ≤ 9.5
Find the point on the curve that when joined to a line segment with...
Here is extra work done:
Ok here is the quadratic equation without any rounding done:
0.199445983x^2 - 3.789473684x + 19 = f(x)
f(9.5) = 0.999999968 ≈ 1
I know that the following points would be on the parabola, had it been complete; "x"-values expressed throughout the entire cartesian domain...
Homework Statement
A parent takes their child to a water slide which is shaped similar to a portion of a parabola (see diagram). There is an elevator 3m from the edge of the pool. The elevator takes the rider to the top of the slide which is 19m above ground. The rider slides down and falls...
Homework Statement
A charge of +6.0µC at point A is seperated 10.0 cm from a charge of -2.0µC at point B. At what locations on the line that passes through the two charges will the total electric potential be 0?
The Attempt at a Solution
[(+) A] ------------------------------ [(-) B]
I...
[b]1. The problem statement, all variables and given/knownThe diagram shows three small charges at three corners of a rectangle; charge A is -12µC, charge B is -15µC and charge C is +8.1µC. Calculate the magnitude and direction of the electric field intensity at the fourth corner, D.
The...
Homework Statement
We are looking at gravitational field intensity in particular here, and using the earth as an example. The question states: Calculate the gravitational field intensity at a height of 300.0 km from Earth's surface.
Why is it that: Since the point in question is outside of...
Alright this is what I know about vectors:
> Dot/Cross Product
> Splitting a vector into its x/y components
> Scalar/Vector projections
So yes, I do have a good base when it comes with vectors.