Doubtly
@Doubtly · Joined Feb 2021
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- How do you execute a PHP script from the command line? Just use the PHP command line interface (CLI) and specify the file name of the script to be executed as follows: php script.php 1
- What does PEAR stand for? PEAR means “PHP Extension and Application Repository”. It extends PHP and provides a higher level of programming for web developers. 1
- Which programming language does PHP resemble? PHP syntax resembles Perl and C 2
- What do the initials of PHP stand for? PHP means PHP: Hypertext Preprocessor. 2
- What is PHP ? PHP is a web language based on scripts that allow developers to dynamically create generated web pages. 2
- Which animal is known as the 'Ship of the Desert"? Camels are known as the ships of the desert mainly because of their physical characteristics which are well adapted to the conditions of the... 1
- Figure shows the x-t plot of one-dimensional motion of a particle. Is it correct to say from the graph that the No. The x-t graph of a particle moving in a straight line for t < 0 and on a parabolic path for t > 0 cannot be shown as the given graph. Th... 1
- A police van moving on a highway with a speed of 30 km h–1 fires a bullet at a thief’s car speeding away in the Speed of the police van, v_p = 30 km/h = 8.33 m/s Muzzle speed of the bullet, v_b = 150 m/s Speed of the thief’s car, v_t = 192 km/h = 53.33... 1
- NCERT Solutions Class 11 Chemistry Chapter 12 Organic Chemistry: Some Basic Principles and Techniques NCERT Solutions Class 11 Chemistry Chapter 12 Organic Chemistry: Some Basic Principles and Techniques have a complete discussion of all kind... 1
- Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi? Given that Force (F) = 10 N and displacement (s) is 30cm= 30/ 100= 0.03m ,calculate the work done. W=? Apply the given values to the equatio... 2
- An electric pump has 2 kW power. How much water will the pump lift every minute to a height of 10 m? Here, P = 2 kW = 2 x 10³ watt, whereas t = 1 m = 60 seconds and h=10m. (g=9.8m/s²). Now, the amount of the water lifted by the pump is the m... 1
- Find the value of m so that the quadratic equation mx(5x − 6) + 9 = 0 has two equal roots. 5mx² - 6mx + 9 = 0 b² - 4ac = 0 ⇒ (-6m)² - 4(5m)(9) = 0 ⇒ 36m(m - 5) = 0 ⇒ m = 0, 5 ; rejecting m=0, we get m = 5 1
- What is the law of conservation of energy? Energy can neither be created nor destroyed. It can be converted from one form into another. Thus, the total amount of energy in the univers... 1
- Into which form are the chemical energy stored in the exploding firecrackers converted to? Energy is transformed from one form to another. In the example stated, the exploding firecrackers convert the chemical energy stored in them... 1
- Ajay and Atul have been asked to determine the potential energy of a ball of mass m kept on a table as shown As seen from the picture, the heights of the ball with respect to Ajay and Atul are different. Also, given that the potential energy is rela... 1
- What is the potential energy? Potential energy of the object is the energy stored in it because of its specific state or position. 1
- What is kinetic energy? Kinetic energy is the energy that an object has because of its motion. The kinetic energy gained by the object is the work done by a force t... 1
- Define energy. What is its unit? Energy is the capacity of a body to perform work. Unit of energy is the same as that of work. In the SI system, the unit is joule, while in... 1