NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Yashi Mishra
Subject: Physics
, asked on 22/1/18
High pressure prevails over land masses during the winter why?
Answer
3
Peter
Subject: Physics
, asked on 6/1/19
A box of mass 3kg is lifted 1.5m onto a shelf. Calculate the change in its gravitational potential energy. The gravitational field strength is 10N/kg.
Answer
1
Vanshi Bhanushali
Subject: Physics
, asked on 12/5/18
How did Indian and Arabian benefitted each other.
Answer
1
Sumedha Ghosh Chowdhury
Subject: Physics
, asked on 10/11/18
delta V = (l + delta l)
3
= 3l
2
delta l
How did we arrive at 3l
2
delta l ? Please show the working.
Answer
1
Anas Khan
Subject: Physics
, asked on 22/8/20
Helo dosto kese ho sab ...................
Answer
36
Anamika Chaudhary
Subject: Physics
, asked on 2/11/18
A coolie carries a certain load to the roof of a bus in 10 minutes . another Coolie carries equal load to the same roof in 16 minutes . find - which coolie does the more work and which coolie has the more power
Answer
5
Darshana Bhere
Subject: Physics
, asked on 18/12/18
Explain Hope's Experiment to demonstrate the anomalous expansion of water.
Answer
1
Praful Kujur
Subject: Physics
, asked on 23/3/18
Solve this :
4. The above graph shows the velocity time graph of a particle of mass 100 g moving in a straight line. Calculate the force on the particle.
5. (a) Name two substances which contract on heating.
Answer
1
Khushboo
Subject: Physics
, asked on 2/3/18
Q1. Is work a scalar or a vector quantity ?
Q2. Define work and give its SI unit.
Q3. Write the expression for the work done by constant force acting on a body, which gets displaced from its initial position in a direction different from the direction of force.
Q4 How is work done related to the applied force ?
Q5. Give an example when work done by a force acting on a body is zero even though the body gets displaced from its initial position by the application of the force.
Q6. What is the angle between force and displacement for (i) zero work and (ii) positive work ?
Q7. Give an example of (i) zero work (ii) positive work and (iii) negative work.
Q8. From the ground floor, a man comes up to the fourth floor of a building using a staircase. Another man comes up to the same floor using an elevator. Neglecting friction, compare the work done in the two cases.
Q9. Under which two conditions will work done be zero?
Q10. When a body moves in a circular path, how much work is done?
Q11. Define one joule.
Answer
1
Priyanka
Subject: Physics
, asked on 27/2/18
no link plzzzz.40 g of water at 60 degree celsius is poured to a vessel containing 50 g of water at 20 degree celsius the final temperature of the body is 30 degree celsius .find the thermal capacity of the body
Answer
2
Esther
Subject: Physics
, asked on 10/1/18
1.50g of ice at 0 degree celsius is added to 300g of a liquid at 30 degree celsius. What will be the final steady temperature of the mixture once the ice has melted?
Answer
1
Yashi Mishra
Subject: Physics
, asked on 23/1/18
Why conventional current generally lead to rain
Answer
0
Abhijeet
Subject: Physics
, asked on 18/9/19
At what temperature will the reading on the Fahrenheit scale be five times of that on the Celsius scale
Answer
1
Bamkim Chandra
Subject: Physics
, asked on 16/3/21
Draw a schematic diagram of a circuit consisting of 3V battery, 5 ohm, 3 ohm and 1 ohm resistor, an ammeter and a plug key, all connected in series.
Answer
1
Sarbik
Subject: Physics
, asked on 21/9/18
"Two bodies having same quantity of heat may differ in their temperature and material of body". How is it possible ?
Answer
1
1
2
3
4
Next
What are you looking for?
How did we arrive at 3l2delta l ? Please show the working.
4. The above graph shows the velocity time graph of a particle of mass 100 g moving in a straight line. Calculate the force on the particle.
5. (a) Name two substances which contract on heating.
Q2. Define work and give its SI unit.
Q3. Write the expression for the work done by constant force acting on a body, which gets displaced from its initial position in a direction different from the direction of force.
Q4 How is work done related to the applied force ?
Q5. Give an example when work done by a force acting on a body is zero even though the body gets displaced from its initial position by the application of the force.
Q6. What is the angle between force and displacement for (i) zero work and (ii) positive work ?
Q7. Give an example of (i) zero work (ii) positive work and (iii) negative work.
Q8. From the ground floor, a man comes up to the fourth floor of a building using a staircase. Another man comes up to the same floor using an elevator. Neglecting friction, compare the work done in the two cases.
Q9. Under which two conditions will work done be zero?
Q10. When a body moves in a circular path, how much work is done?
Q11. Define one joule.