Wellcome!

 

 

Ask Questions From NCERT:



Question 1. Asked on :25 November 2020:01:26:40 PM

 Why do we dissolve oleic acid in alcohal?

-Added by Himanshi Verma Physics » Motion In A Straight Line.

Answer:

 Oleic acid is soluble in alcohal and diluting it with alcohal will replace it's concentration consequently it will helps to form a very thin (almost the molecular thickness) get formed and we can measure it's thickness by calculating volume.

-Answered by Himanshi Verma On 25 November 2020:01:28:10 PM

Question 2. Asked on :25 November 2020:01:22:49 PM

 What is accuracy and precision?

-Added by Himanshi Verma Physics » Motion In A Straight Line.

Answer:

 Accuracy :- Accuracy is how close a measured value is to the actual value.

Precision:- Precision is how closed the measured value are to each other.

-Answered by Himanshi Verma On 25 November 2020:01:24:02 PM

Question 3. Asked on :25 November 2020:01:21:18 PM

 Name two phyiscal quantities that have units but no dimensional formula?

-Added by Himanshi Verma Physics » Motion In A Straight Line.

Answer:

 Plane Angle, Angular displacement have units but no dimensional formula.

-Answered by Himanshi Verma On 25 November 2020:01:22:11 PM

Question 4. Asked on :25 November 2020:01:18:43 PM

 Define negative acceleration?

-Added by Himanshi Verma Physics » Motion In A Straight Line.

Answer:

 If the velocity of a body is decreasing with time then it is said to travel with a negative acceleration. {Retardation, declaration}.

-Answered by Himanshi Verma On 25 November 2020:01:19:28 PM

Question 5. Asked on :25 November 2020:01:15:34 PM

 A ball is thrown vertically upwards. What is it's velocity at the highest point?

-Added by Himanshi Verma Physics » Motion In A Straight Line.

Answer:

 It continuous upwards unit it reaches a certain position, and then it falls downwards, At that highest point, it's velocity is instantaneously zero.

-Answered by Himanshi Verma On 25 November 2020:01:16:54 PM

Question 6. Asked on :25 November 2020:01:13:41 PM

 What is Unit vector?

-Added by Himanshi Verma Physics » Motion In A Plane

Answer:

 A unit vector is a vector that has a magnitude of 1 unit. A unit vector is also known as direction vector.

-Answered by Himanshi Verma On 25 November 2020:01:14:31 PM

Question 7. Asked on :25 November 2020:01:09:39 PM

 State the Triangular law of vector addition.

-Added by Himanshi Verma Physics » Motion In A Straight Line

Answer:

 It states that if two vectors acting on a particle at the same time are represented in magnitude and direction by the two sides  of a triangle in one order, their resultant vector is represented in magnitude and direction by the third side of the triangle taken in opposite order.

-Answered by Himanshi Verma On 25 November 2020:01:11:05 PM

Question 8. Asked on :25 November 2020:01:04:53 PM

 What is instantaneous speed and velocity?

-Added by Himanshi Verma Physics » Motion In A Straight Line

Answer:

 Instantaneous speed = The speed of a body at a particular instant of time during the motion is called instantaneous speed.

Instantaneous velocity = The velocity of a body at any instant of time is known as instantaneous velocity.

-Answered by Himanshi Verma On 25 November 2020:01:05:35 PM

Question 9. Asked on :25 November 2020:01:02:09 PM

Define Average speed

-Added by Himanshi Verma Physics » Motion In A Straight Line

Answer:

 The average distance covered by a body per unit time is known as average speed. It is calculated as the ratio of the total distance travelled to the total time taken.

-Answered by Himanshi Verma On 25 November 2020:01:03:26 PM

Question 10. Asked on :25 November 2020:12:58:46 PM

 What is Homogeneity Principle?

-Added by Himanshi Verma Physics » Units And Measurements

Answer:

 If the dimensions of the left hand side of an equation are equal to the dimensions of right hand side of the equation is dimensionally correct. this is known as Homogeneity Principle. 

-Answered by Himanshi Verma On 25 November 2020:01:00:47 PM


 

Search your Question Or Keywords

 

 

Do you have a question to ask?

 

Ask Your Question

User Earned Point: Select

 

 

 

All Tags by Subjects:

 

Science (1906)
History (200)
Geography (297)
Economics (157)
Political Science (95)
Mathematics (195)
General Knowledge (5530)
Biology (94)
Physical Education (20)
Chemistry (118)
Civics (114)
Home Science (12)
Sociology (9)
Hindi (43)
English (248)
Physics (1434)
Other (92)
Accountancy (176)
Business Study (70)
Computer Science (71)

 

 

Sponsers link