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Assuming no friction, describe the motion of a simple pendulum released from rest at t=0 at amplitude A? Provide information about its speed and position at characteristic times during one period. [The 1D equation of motion is described by a cosine]

The displacement of the bob of mass m is given by the equation x(t)=A cos(w*t), with no phase offset as given by the boundary conditions (zero speed at t=0). By differentiating this equation twice the fir...

SA
Answered by Stefan A. Physics tutor
1899 Views

Explain the difference in reactivity of the halogens as group 7 is descended.

The halogens become less reactive as the group is descended. The halogens react by accepting an electron into its outer shell from another atom. As the halogens are descended, the outer electron shell bec...

TA
Answered by Tomos A. Chemistry tutor
2171 Views

Describe the process used by a binary search algorithm, and explain why binary search would not be appropriate for the list [3,2,5,7,9]

A binary search starts at the middle of the list and compares this item with the search term, if the item matches the search term, then the search is complete.If the item is not the search term, it is com...

WH
Answered by William H. Computing tutor
1524 Views

What is genetic drift?

Genetic drift is any change to the gene pool of a population (the total set of genes they have as a group) that is NOT a caused by selection. They can be thought of as 'random' changes, unlike natural sel...

MH
Answered by Michelle H. Biology tutor
3839 Views

In an isolated container contains 1kg of ice at 0 oC. 1kg of warm water (323K) is poured into the container. How much ice (in kgs) remains after the system returns to thermal equilibrium? (by the end of the process?)

As this is an isolated container, we know that the heat transfer with the environment is zero. Since the specific latent heat of ice is a magnitude bigger than the specific heat of water, the container wi...

AM
1704 Views

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