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Ask QuestionPosted by Abiya Studio Karungal Anlin 3 days ago

- 1 answers

Yogita Ingle 2 days, 15 hours ago

H = u²/(2g)

H = 20²/(2×10)

H = 20 m

The ball will reach 20 m high from the point of projection.

It reaches 20 + 20.5 = 40.5m high from the ground.

(b)

t1 = 2u/g

t1 = 2×20/10

t1 = 4 seconds

If v is the velocity with which it hits the ground then,

v = √(u² + 2aS)

v = √(20² + 2×10×25)

v = 30 m/s

v = u + at

t2 = (v - u)/g

t2 = (30 - 20)/10

t2 = 1 second

Time taken for it to hit the ground = t1 + t2

= 4 + 1

= 5 seconds

Note: I took g = 10m/s².

Posted by Tumula Chandra Mouli 3 days, 6 hours ago

- 1 answers

Mahakal Bhakt Vishnu 3 days, 3 hours ago

The strong nuclear for act between quarks and nucleons.The reason for evolving nuclear force is exchange of gluons.

Posted by Adarsh Dwivedi 3 days, 10 hours ago

- 1 answers

Mukul Tyagi 3 days, 9 hours ago

V=100+-5 & I= 10+-0.2A
R=V/I
(∆R/R)×100= (∆V/V)×100 + (∆I/I)×100
(∆R/R)×100= (5/100)×100+(0.2/10)×100
(∆R/R)×100= (1/20)×100+(1/50)×100
(∆R/R)×100= (5+2)%
(∆R/R)×100= 7% Answer.....

Posted by Indira S 3 days, 13 hours ago

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Shrutika Patil 3 days, 12 hours ago

________ and _________ are the factor of every number

Posted by ❤Sona❤ ... 3 days, 14 hours ago

- 4 answers

Posted by Mayank Kumar 3 days, 19 hours ago

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Posted by Khan Farah 4 days, 17 hours ago

- 1 answers

Yogita Ingle 4 days, 15 hours ago

“The phenomenon of ejection of electrons from the surface of a metal when light of suitable frequency strikes on it, is called photoelectric effect.

The emitted electrons are called photoelectrons.”

Posted by Aadya Singh 4 days, 17 hours ago

- 2 answers

Posted by Royal Thakur 🤟 4 days, 17 hours ago

- 5 answers

Suhani Soni 4 days, 22 hours ago

Speed at a particular time or at an instant is called instantaneous speed.

Posted by Shubham Pandey 5 days, 11 hours ago

- 3 answers

Posted by Himanshu Kumar 5 days, 14 hours ago

- 0 answers

Posted by Aadya Singh 5 days, 15 hours ago

- 3 answers

Sharma Sadul😍 5 days, 14 hours ago

Let take the angle between P and Q is θ.
The force expression according to given conditions are given as,
P2+Q2+2PQcosθ=R2 (1)
When Q is doubled,
P2+4Q2+4PQcosθ=4R2 (2)
When Q is reversed,
P2+Q2−2PQcosθ=4R2 (3)
Subtracting equation (3) from equation (1), we get
4PQcosθ=−3R2
PQcosθ=4−3R2 (4)
Substituting the value from equation (4) to equation (1), (2) and (3), we get
P2+Q2=25R2
P2+4Q2=7R2
P2+Q2=25R2
Simplify the above equations, we get
P2=R2
Q2=23R2
Thus, the ratio is P:Q:R=√2:√3:√2.

Posted by Vivek Behera 5 days, 17 hours ago

- 3 answers

Vivek Behera 5 days, 11 hours ago

No need to install the app again.
Just logout & login again. Works with same no. also...😁😁

Sharma Sadul😍 5 days, 14 hours ago

U can again Install this app..and put another number to get OTP ..then u can use this app..properly..

Posted by Prachi Aprajita Rout 6 days, 15 hours ago

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Posted by Mohd Gulfam 6 days, 16 hours ago

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Posted by Tania Sharma 1 week ago

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Posted by Mansi Hooda 1 week ago

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Posted by Monika Malviya 1 week ago

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Yogita Ingle 1 week ago

Physics has a very wide scope. There are three domains of interest which are macroscopic domain, mesoscopic and microscopic domain. The macroscopic scale is the length scale on which objects or processes are of a size that is measurable and observable by the naked eye. The microscopic scale is the scale of size or length used to describe objects smaller than those that are easily be seen by the naked eye and which require a lens or microscope to see them clearly.

Posted by Kritika Gupta 1 week, 1 day ago

- 3 answers

Prerna Kumari 6 days, 14 hours ago

least count of screw guage is 0.01 and least count of vernier calliper is 0.01

Sarthak Modi 1 week, 1 day ago

If it's helpful to you then please click on thanks button...

Sarthak Modi 1 week, 1 day ago

Screw is substance/object which helps to find the measurement of small length or radius of small particles.it is works similar to vernier calliper.it has high precision.

Posted by Narendra Singh Narendra Singh 1 week, 1 day ago

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Posted by Vikash Kumar Yadav 1 week, 1 day ago

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