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Ask QuestionPosted by Geetika . 45 minutes ago
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Posted by Secret Superstar 18 hours ago
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Posted by Bhawani Sahu 1 day, 2 hours ago
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Gaurav Seth 1 day, 2 hours ago
One parsec is _____ light years.
Answer: 3.26
Explanation: Parsec is the unit of length used to measure the large distances to astronomical objects outside the Solar System. It is obtained by the use of trigonometry and parallax.
1 parsec = 3.26 light year
Therefore, one parsec is equal to 3.26 light year.
Posted by Bhawani Sahu 1 day, 2 hours ago
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Bhawani Sahu 1 day, 2 hours ago
Yogita Ingle 1 day, 2 hours ago
Steradian, unit of solid-angle measure in the International System of Units (SI), defined as the solid angle of a sphere subtended by a portion of the surface whose area is equal to the square of the sphere’s radius. Sin
Posted by Ankit Singh Thakur💔💔😔😢 1 day, 13 hours ago
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Bhawani Sahu 1 day, 3 hours ago
Naira 😇😇😇 .# Hate Luv Story... 😈😈 1 day, 2 hours ago
Naira 😇😇😇 .# Hate Luv Story... 😈😈 1 day, 2 hours ago
Posted by Pooja Ranjna 1 day, 15 hours ago
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Posted by Pooja Ranjna 1 day, 18 hours ago
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Gaurav Seth 1 day, 18 hours ago
1. We can multiply both the sides with zero to equalise them.
2. We can use roman numbers to prove this.
19 is written as XXIX
1 is written as I
20 is written as XXX
So, we can write it as:
XXIX - I = XXX
Hence, it is proved that 19-1= 20.
Posted by Abhishek Solanki 1 day, 19 hours ago
- 1 answers
Gaurav Seth 1 day, 19 hours ago
A radian is actually a SI unit to measure the angle and for a complete 360 degree the angle in radian is 2π
so on comparing we have
2π = 360
so
π = 180 degree
so to solve the angles u have to take the value of π = 180
and when u get the angle in radian with π u can solve it by using the valoue of π = 22/7.
Posted by Diya Prajapati 1 day, 20 hours ago
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Gaurav Seth 1 day, 19 hours ago
Make a Study Plan
Make a strategic study plan for covering the entire syllabus. Set small targets to achieve on how many topics to complete in say one week, one month, three months, etc. Also, keep time for revision and mock tests in your study plan.
For more click on the given link :
<a href="https://www.examsplanner.in/articles/how-to-start-preparation-for-iit-jee-from-class-11/">https://www.examsplanner.in/articles/how-to-start-preparation-for-iit-jee-from-class-11/</a>
Posted by Khushboo Sahu 2 days, 1 hour ago
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Posted by Khushboo Sahu 1 day, 2 hours ago
- 1 answers
Gaurav Seth 2 days, 1 hour ago
Answer : Angle will be 60o
Explanation:
According to the formula of and
we can write it as following-
[+2pq and -2pq will be cancel]
Theta
Posted by Khushboo Sahu 1 day, 2 hours ago
- 1 answers
Yogita Ingle 2 days, 1 hour ago
Let θθ be the angle between the two vectors A and B such that, |A| = |B|.
Therefore, R2=A2+B2+2ABcosθ
=>A2=A2+A2+2AAcosθ
[∵ |A| = |B| = |R|]
=>A2=2A2+2A2cosθ
=>cosθ=−1/2
=>θ=120∘
Posted by Khushboo Sahu 1 day, 2 hours ago
- 1 answers
Gaurav Seth 2 days, 1 hour ago
If the direction of the resultant force does not change, it means the angle between them remain the same.
Assuming the angle was initially 45 degrees, it will remain the same
Tan 45 = 2p/2p = 1
First force is doubled, it becomes = 4p
20N is added to the second force, it becomes = 2p + 20
Tan 45 = 4p/(2p + 20) = 1
4p = 2p + 20
2p = 20
p = 10 N
Posted by S G 2 days, 16 hours ago
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Posted by Nandini Rathour 4 days, 13 hours ago
- 3 answers
Gaurav Seth 4 days, 1 hour ago
Given:
Percentage error in measurement of side of cube = 2 %
i.e., (Δa/a) × 100 = 2 %
To Find:
Percentage error in the volume and area of cube.
Calculation:
- Area of cube, A = a²
⇒ Percent error in area is given by
(ΔA/A) × 100 =2 (Δa/a) × 100
⇒ (ΔA/A) × 100 = 2 × 2
⇒ (ΔA/A) × 100 = 4 %
- Volume of cube, V = a³
⇒ Percent error in volume is given by
(ΔV/V) × 100 = 3 (Δa/a) × 100
⇒ (ΔV/V) × 100 = 3 × 2
⇒ (ΔV/V) × 100 = 6 %
- Thus, % error in area and volume is 4 % and 6 % respectively.
Posted by Khushboo Sahu 4 days, 15 hours ago
- 1 answers
Yogita Ingle 4 days, 15 hours ago
As one component of 80km/hr velocity is 40km/hr , then ;
cos (theta) = 40/80
= 1/2
(theta) = 60°
other component will be ;
cos (90-60) = x/80
80 × cos 30° = x
x = 80×√3/2
x = 40√3 km/hr
Posted by Khushboo Sahu 4 days, 15 hours ago
- 1 answers
Gaurav Seth 4 days, 1 hour ago
Given, two force act on a body at angle 60° , exact force is equal to 4 N
so, magnitude of resultant force is --
now, let angle between resultant force and vector force is ∅
now,
tan ∅ =
so, ∅ = 30°
hence, resultant force is 30° from forces 4N
Posted by Saket Jha 4 days, 20 hours ago
- 1 answers
Yogita Ingle 4 days, 18 hours ago
Acceleration is rate of change of velocity with time. It is denoted by ‘a’ and the SI unit is m/s2.
Average acceleration is change of velocity over a time interval.
Posted by Divyanshi Goswami 5 days, 22 hours ago
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Pooja Ranjna 3 days ago
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Posted by Sreenath Sreenath 6 days ago
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Gaurav Seth 6 days ago
The units which are independent of each other are known as Fundamental Units. Derived Units are derived from Fundamental Units. For example, meter is a fundamental unit of length and second is a fundamental unit of time. However, meter per second (ms-1) is a derived unit of velocity. There are seven fundamental units as given in the below table:
<th>No.</th> <th>Quantity</th> <th>Fundamental Unit</th> <th>Symbol</th>| 1. | Length | metre | m |
| 2. | Mass | kilogram | kg |
| 3. | Time | second | S |
| 4. | Temperature | Kelvin | kg |
| 5 | Electric current | ampere | A |
Posted by Divyanshi Goswami 5 days, 2 hours ago
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Swastik Mishra 6 days, 1 hour ago
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Yogita Ingle 33 minutes ago
It is given that,
Vector, a^ =3i^+4j^
Vector, b^ = 2i^-3j^
We have to find the component of vector a along the direction of vector b.
N= -1.6
So, the component of vector a =3 i+4 j along the direction of b =2 i - 3 j is -1.6.
Hence, this is the required solution.
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