Homework Statement
Given g = 9.8 m/s
2
.
A sky diver of mass 69 kg jumps from a
slowly moving aircraft and eventually reachesher terminal velocity 56 m/s.
What was (the magnitude of) her acceleration at the moment her velocity was only
v1 = 39 m/s (directed vertically down)?
Answer in...
Homework Statement
What are the half reactions of
Fe + CuSO4→ Cu + FeSO4
Homework Equations
The Attempt at a Solution
i think it is Fe→Fe2++ 2e-
and Cu2++2e-→ Cu
I don't know where the SO4 comes in. is it a spectator ion
I did it again and i got 1.414E-8 ... and i think that is in meters. Am i right??
so that means that the answer is14.14nm
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I used Plancks constant in eV's. Its on the ap equation sheet
Homework Statement
A quantum of electromagnetic radiation has
an energy of 0.877 keV.
What is its wavelength? The speed of light
is 2.99792 × 10
8 m/s, and Planck’s constant
is 6.62607 × 10−34J · s.
Answer in units of nm
Homework Equations
E=hf
v=fλ
... λ=v/(E/h)
The Attempt...
Homework Statement
I don't quite understand what deviation or the deviation angle is.
Homework Equations
??
The Attempt at a Solution
I have no idea what it is. Is it the angle that it enters the prism - the angle that it leaves the prism.
Homework Statement
A wave is sent along a long spring by moving the left end rapidly to the right and keeping it there. The figure shows the wave pulse at QR - part RS of the long spring is as yet undisturbed.Which of the graphs correctly shows the relation between the original position x of...
Homework Statement
2KClO3 → 2KCl + 3O2
How many grams of potassium chloride are produced if 25 g of potassium chlorate decompose
Homework Equations
The Attempt at a Solution
25g * (1 mole KClO3/122.45 g KClO3) *(74.45g/ 1 mole KCl) =15.2 g KCl
is this right??
Homework Statement
Consider a rod of length L and mass m which
is pivoted at one end. The moment of inertia
of the rod about an end is Irod = 1/3 mL2. An object with mass m is attached to the free end of the rod.
Find the moment of inertia of the system
with respect to the pivot point...