Answer:
Time required for iron rod surface temperature to cool to 200°C is 250 seconds.
Explanation:
Answer:
a)
b)
Explanation:
Previous concepts
The cumulative distribution function (CDF) F(x),"describes the probability that a random variableX with a given probability distribution will be found at a value less than or equal to x".
The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution".
Part a
Let X the random variable of interest. We know on this case that
And we know the probability denisty function for x given by:
In order to find the cdf we need to do the following integral:
Part b
Assuming that , then the density function is given by:
And for this case we want this probability:
And evaluating the integral we got:
Answer:
Pharming
Phishing
Explanation:
Pharming is used equal like Phishing, because using fake websites, but in this case, is not necessary spam in your email.
Phishing is used like spam, and they pretend to be real companies by email, if you click in the email you will go a supposedly a real website, you put your information like passwords in these websites
You can prevent these techniques using antivirus and you can verify the websites because fake websites don't have the https:// protocol.
A business can prevent this issue using corporatize email and configuring the company network with security protocols and encrypt the information.
Answer:
So natural frequency will be 958.9616 rad/sec
Explanation:
We have given amplitude response %
Damped frequency f =80 Hz
So
So
We know that
So
So
Now we know that
So natural frequency will be 958.9616 rad/sec
Explanation:
You should always check your fuel level before beginning a test drive.
yes it is true.
avoiding it can lead to accident.