The circuit of Figure P12.4 is a very effective battery charger. Its operation is simple, and the TIP-33C npn power transistor can sink 10 A if a big enough heat sink is used. Assuming that the transistor remains in the active operating region, determine the power delivered to the 1.2-V rechargeable battery in the circuit.
Analysis:
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A computer sends a packet of information along a channel and waits for a return signal acknowledging that the packet has been received. If no acknowledgment is received within a certain time, the packet is re-sent. Let X represent the number of times the packet is sent. Assume that the probability mass function of X is given by
where c is a constant.
a. Find the value of the constant c so that p(x) is a probability mass function.
b. Find P(X=2).
c. Find the mean number of times the packet is sent.
d. Find the variance of the number of times the packet is sent.
e. Find the standard deviation of the number of times the packet is sent.
During cloning, a shock wave of electricity causes foreign DNA to enter and fuse with the cytoplasm in the enucleated oocyte
Indicate whether the statement is true or false
What does direct inhalation of helium cause?
What will be an ideal response?
If you were looking for a soil with high cation exchange capacity and were not concerned with the soil's physical properties, which of the following would most likely fit your needs?
A) Aridisol B) Mollisol C) Vertisol D) Oxisol E) Ultisol