How do I concatenate two strings?

1

A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.

1456

Name the molecule which is characteristically prevalent in sour milk and tired muscles?

561

Lists life cycle methods of android activity?

520

what is business area? What are its advantages and disadvantages?

601

What does %s mean in python?

489

what is sales tax assesment or annuel return company and how to do end of the finiancial year and what is form no 240.

1579

Do companies use microsoft access?

506

Purpose of lubricator in a large diesel engine.

1547

Can we store images in mysql database?

484

explain working principle of earth leakage relay

3079

What is flux?

176

Explain what is tree manager?

508

how much UPS neutral erath leakage current.

3129

What is the difference between $var and $$var?

558