Silver when comes in contact with a boiled egg, turns grey or black. Why
Silver is a well known name in jewellery and coinage.Silver also has the …
Showing posts from September, 2021Show All
Three taps A, B & C together can fill a tank in 6 hours. After working for 2 hours, A is closed and B and C filled the remaining part in 8 hours. What is the time taken for Tap A alone to fill the tank?
A,B and C working together takes 6 hours to fill the tank. So in one hour A,B, and C…
Why is pressure comes under scalar quantity?
Pressure is defined as force per unit area. Pressure, P=F/A Pressure is a scalar quan…
Documents Needed For Medical Admission In Maharashtra
*Documents required at the time of Medical Admissions in Maharashtra* 1) Copy of downl…
What is the best possible way to learn physics?
Physics as a branch to study is very vast and a nyone who studies physics is either f…
Difference between simple pendulum and compound pendulum?
Pendulums are a combination of certain materials which displays periodic oscillatory m…
Types of pendulum we see or study in physics?
After going through various searches, the list of pendulum that we get is given below …
Why do we used steel alinico for making permanent magnet?
📌The materials which we choose in making of a permanent magnet should have high coer…
Why do planets change their speeds when orbiting around the Sun ?
According to Kepler's second law which states that the areal velocity of a planet…
A 40 kg block is resting at a height of 5 m off the ground. If the block is released and falls to the ground, what is its total energy at a height of 2m (g=10m/s²)?
For such questions we have to use the idea of conservation of energy, i.e. total ene…
A truck starts from rest with a constant acceleration. During the 5th second it covers a distance of 10m. What is its acceleration?
Let us define some parameters, let, s- distance. a - acceleration. t - time u - init…
If a boy drops a ball from a window and the ball takes 3s to hit the ground, what is its velocity the second before it hits the ground? Take gravity as 10m/s^2 . (Neglect air resistance)
From given conditions we observe that, ball takes 3s to hit the ground, then one seco…
A wheel is rotating at 20rad/s is brought to rest by a constant torque in 4 seconds. If the moment of inertia of the wheel is 0.3 kgm^2, what is the angle rotated by the wheel in the first 2 seconds?
Given conditions can be written as, ω1 = 20 rad/s I = 0.3 kgm 2 t = 4 s ∵ ω2 = ω1 1 -…
A monkey climbs a 60 m high pole. In the first minute, he climbs 6 m and slips down 3 m in the next minute. What time is required for it to reach the top?
From the given conditions we find that , In the first minute the monkey climbs 6 met…
The distance between two places A and B is 60 Km. Two cars at the same time start moving from two ends with the speed of 35 km/h and 25 km/h respectively. If both cars are moving towards each other, then after what time they will meet?
Since we know that the distance b etween A and B is 60 km also Speed of car A = 35 k…
A car is moving on a straight road covers one third of the total distance at 20km/h, and the rest at 60km/h. What is its average speed?
To solve such sums let us assume some quantities first . L et the total distance cove…
New Year 2022
Wishing everyone a very Happy New Year ahead ! God bless you all
Characteristics of electromagnetic force and gravitational force
Characteristics of Electromagnetic force Electric force can be attractive …