Can constructor be protected?

905

What is the main difference between sql and pl/sql?

1096

Greetings This question is about hydraulics and I request an expert to answer it. A simple hydraulic machine is made up of two heads, a larger one with a larger force inside a wider pipe and a smaller one with a smaller force inside a smaller pipe in width as in the second picture on this link: http://science.howstuffworks.com/hydraulic1.htm The question is this: what happens if the smaller head and the smaller force doesn’t exist but the smaller pipe is high enough to take all the liquid? For example the larger head is 1.00 sqr metre and can go down 1.00m under a weight of 100.00kg. The cross sectional area of the smaller pipe is 0.001 sqr metre. Now when the larger head goes down 1.00m, how high the liquid from the wider pipe can go into the smaller pipe of the cross sectional area of 0.001 sqr metre? Regards

1994

What is the other name of isoantigen?

565

How do you check if a value in one column exists in another using vlookup?

643

Can you explain collaborative filtering?

459

What are the types of processor in jmeter?

620

How you overcame a major obstacle?

1110

Explain Casting in salesforce?

498

How do I use trim function in excel?

573

Is it better to have more cores or more threads?

847

Is Parameter have its dropdown list?

461

How many types of function in ms excel?

617

what is limit of cleaning validation

2500

Why use a datasource when you can directly specify a connection details? (in a J2EE application)

4279