Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Komal Arya 5 years, 1 month ago
- 1 answers
Posted by Riya Rawat 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
Let AB be tower.
BC be original shadow.
BD be final shadow.
Given BD-BC = CD = 50m
∴ In ΔABC,
tan 60° = AB/BC
=> AB/√3 = BC ...(1)
∴ In ΔABD,
tan 30° = AB/BD
=> 1/√3 = AB/(BC+CD)
=> AB√3 = AB/√3+50 (From 1)
=> AB√3-AB/√3 = 50
=> 3AB-AB/√3 = 50
=> AB = 50√3/2 = 25√3 = 25*1.732 = 43.30m
Posted by Krishna Prajapati 5 years, 1 month ago
- 1 answers
Posted by Anuj Chaudhary 5 years, 1 month ago
- 2 answers
Harshree Saraf 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
- Gravitational Force: It is the force of mutual attraction between any two objects by virtue of their masses. It is a universal force as every object experiences this force due to every other object in the universe.
- Electromagnetic Force: It is the force between charged particles. Charges at rest have electric attraction (between unlike charges) and repulsion (between like charges). Charges in motion produce magnetic force. Together they are called Electromagnetic Force.
Posted by Royal Thakur 4 years, 4 months ago
- 1 answers
Sia ? 4 years, 4 months ago
|
Comparison Basis |
Velocity |
Acceleration |
|
Meaning |
It alludes to the speed of an object in the given direction. |
Acceleration implies to any change in the velocity of an object with respect to time |
|
Calculated With |
Displacement |
Velocity |
|
What is its Nature? |
Vector |
Vector |
|
What is it? |
Rate of change of displacement |
Rate of Change of Velocity |
|
Formula |
Displacement/Time (d/t) |
Velocity/Time (v/t) |
|
Ascertains |
How fast an object is moving and in which direction |
How fast an object’s velocity changes with time. |
|
Unit of Measurement |
meter/second (m/s) |
meter/second2 (m/s2) |
Posted by Royal Thakur 5 years, 1 month ago
- 1 answers
Royal Thakur 5 years, 1 month ago
Posted by Mandeep Bhusal 5 years, 1 month ago
- 2 answers
Muskan Roy 5 years, 1 month ago
Meghna Thapar 5 years, 1 month ago
Reductionismare identical to, or are collections or combinations of, entities of another (often simpler or more basic) kind or that expressions denoting such entities are definable in terms of expressions denoting other entities. Thus, the ideas that physical bodies are collections of atoms or that a given mental state (e.g., one person’s belief that snow is white) is identical to a particular physical state (the firing of certain neurons in that person’s brain) are examples of reductionism.
Unification: It is the act of unifying the different laws valid for different phenomena in to a single theory that explains all the different phenomena. Eg. ... These are unified under theory of electromagnetism; Reduction: It is the effort to solve a complex problem by breaking it into simpler parts.
Posted by Rahul Mahawar 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit. Calculate the number of significant figures for an assortment of numbers. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5). Zeros appearing anywhere between two significant figures are significant: 101.1203 has seven significant figures: 1, 0, 1, 1, 2, 0 and 3.
Posted by Bhardwaj Gouri 5 years, 1 month ago
- 4 answers
Harshree Saraf 5 years, 1 month ago
Harshree Saraf 5 years, 1 month ago
Posted by Anuj Chaudhary 5 years, 1 month ago
- 3 answers
Posted by Anuj Chaudhary 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
The potential difference is the work done per unit charge.
The dimensional formula for potential difference is dimension of work/dimension of charge =dimensions of mass times acceleration times distance/ dimension for charge ={tex}M^1L^1T^-2L^1 / A^1T^1 = M^1 L^2 T^-3A^-1 {/tex}
Posted by Aakash Deep 5 years, 1 month ago
- 1 answers
Posted by Aakash Deep 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
The range of variation over the seven days of observation is 162 s for clock 1, and 31 s for clock 2. the average reading of clock 1 is much closer to the standard time than the average reading of clock 2. The important point is that a clock's zero error is not as significant for precision work as its variation, because a 'zero-error' can always be easily corrected. Hence closk 2 is to be preferred to clock 1.
Posted by Laxman Rajput 5 years, 1 month ago
- 1 answers
Posted by Shiv Singh 5 years, 1 month ago
- 2 answers
Posted by Shiv Singh 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
Acceleration is the rate of change in velocity expressed mathematically as dv/dt = a. An object moving at uniform or constant velocity has zero acceleration.
Posted by Neil Modi 5 years, 1 month ago
- 1 answers
Posted by Abcd Ab 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
Scientific method involves making observations, forming questions, making hypotheses, doing an experiment, analyzing the data, and forming a conclusion. Every scientific experiment performed is an example of the scientific method in action, but it is also used by non-scientists in everyday situations.The scientific method consists of six steps:
- Define purpose.
- Construct hypothesis.
- Test the hypothesis and collect data.
- Analyze data.
- Draw conclusion.
- Communicate results.
Posted by Komal Koti 5 years, 1 month ago
- 0 answers
Posted by Ankush Sharma 5 years, 1 month ago
- 5 answers
Posted by Ria Singh 5 years, 1 month ago
- 5 answers
Ankush Sharma 5 years, 1 month ago
Posted by Shubhangi Singh 5 years, 1 month ago
- 5 answers
Yogita Ingle 5 years, 1 month ago
SI unit of current is ampere.
1 ampere is the constant current that will produce an attractive force of 2 × 10−7 Newton per meter of length between two straight, parallel conductors of infinite length and negligible circular cross section placed one meter apart in a vacuum.
Posted by Simran Sarao 5 years, 1 month ago
- 1 answers
Posted by Manisha Jangra 5 years, 1 month ago
- 1 answers
Amritanjali Sinha 5 years, 1 month ago
Posted by Tarannum Akhtar 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
Conservation of energy, principle of physics according to which the energy of interacting bodies or particles in a closed system remains constant. ... For example, when a pendulum swings upward, kinetic energy is converted to potential energy. Mechanical energy is the sum of the potential and kinetic energies in a system. The principle of the conservation of mechanical energy states that the total mechanical energy in a system (i.e., the sum of the potential plus kinetic energies) remains constant as long as the only forces acting are conservative forces.
Posted by Madhu Sah 5 years, 1 month ago
- 1 answers
Posted by Sowmiya Sar 5 years, 1 month ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
🤟Royal Thakur 🤟 5 years, 1 month ago
3Thank You