ICSE IX Physics Energy Flow and Conservation of Resources
what is meant by the efficient use of energy?
Asked by Vishal
2nd February 2018
8:09 PM
Answered by Expert
ICSE X Physics
Why should the lower block of the pulley system should be of negligible mass
Asked by lovemaan5500
15th March 2018
7:28 AM
Answered by Expert
NEET1 NEET1 Physics
One mole of an ideal diatomic gas is taken through a cyclic process ABCDA as shown in the figure. The thermodynamic efficiency of cycle is (nearly) Options: 10% 20% 50% 25%
Asked by dipanshusingla029
31st May 2018
11:07 AM
Answered by Expert
ICSE X Physics
A load of 75 kgf is raised with a Pulley system with an effort of 25 kgf what is the mechanical advantage, velocity ratio,efficiency of the system
Asked by Samrat
30th June 2018
8:51 PM
Answered by Expert
ICSE X Physics
A 4 Pulley system is used to lift a mass of 10 kg If a 40 Newton force is applied by the man to lift this Mass through 1 M a.calculate the velocity ratio of system b. the energy transferred by the man to the pulley system in raising the load through 1 m c. The potential energy transferred to the load d.efficiency of pulley system
Asked by Samrat
30th June 2018
9:01 PM
Answered by Expert
ICSE X Physics
A man loses a 2.5 M long crowbar to raise a 100 kg mass such that load arm is 0.5 CM the distance moved by the effort is 0.1 M find a.effort needed to lift a load B. Mechanical advantage of crowbar c.the work done by the effort d.distance the load is raised e.the work done on the Load f. the efficiency of the crowbar
Asked by Samrat
30th June 2018
9:10 PM
Answered by Expert
ICSE X Physics
Block and tackle has four pulleys draw diagram of pulley system a man exerts a pull of 240 Newton to lift a load of 720 N calculate mechanical advantage velocity ratio and efficiency
Asked by Samrat
30th June 2018
11:15 PM
Answered by Expert
ICSE X Physics
A Pulley system lifts a load of 1200 Newton by an effort of 250 Newton if the load due to movable part of machine is 300 N find the mechanical advantage , ideal ,velocity ratio ,number of pulleys and efficiency
Asked by Samrat
30th June 2018
11:23 PM
Answered by Expert
JEE Plances JEE (Main) Chemistry Electrochemistry
Please answer the following question with explanation
Asked by Deepak
12th September 2018
10:08 PM
Answered by Expert
ICSE X Physics Work, Energy and Power
A hydroelectric power station takes its water from a lake whose water level is at a hight of 50m above the turbine, Assuming an overall efficiency of 40 %, calculate the mass of water which must follow through the turbine each second to produce power output of 1MW. Pls solve this question clearly step by step so that i can understand
Asked by krcraju1973
19th May 2019
1:03 PM
Answered by Expert
CBSE XII Science Chemistry Electrochemistry
3.71 plz
Asked by lovemaan5500
19th August 2019
11:13 PM
Answered by Expert
CBSE XII Science Chemistry Electrochemistry
3.66 sum plz
Asked by lovemaan5500
19th August 2019
11:14 PM
Answered by Expert
ICSE X Physics
Rahul applies a force of 6 kgf to lift a 4 kg bucket from a well using a single fixed pulley. Assuming the additional force applied to be to overcome frictional force. Find the (1) frictional force (2) mechanical advantage (3) efficiency of the system.
Asked by cbiswajit
20th September 2019
10:56 PM
Answered by Expert
ICSE X Physics
A block and tackle arrangement consists of 5 pulleys. It is used to lift a load of 50 kgf steadily to a height of 20m. The wrk done against friction is 2000J. Find 1) the work input 2) the efficiency of the system 3) the effort needed to lift the load
Asked by cbiswajit
20th September 2019
11:11 PM
Answered by Expert
ICSE X Physics Work, Energy and Power
ch. work power energy
Asked by nilesh.dhote74
27th April 2020
5:58 PM
Answered by Expert
ICSE X Physics Machines
why velocity ratio is not affected by friction?
Asked by saibaba1069
27th April 2020
6:49 PM
Answered by Expert
ICSE X Physics Work, Energy and Power
exercise 2c q5
Asked by nilesh.dhote74
29th April 2020
10:06 PM
Answered by Expert
ICSE X Physics Machines
give two reasons to show that the efficiency of a machine is less than 100%
Asked by sangeetamahapatra05
29th May 2020
8:34 PM
Answered by Expert
ICSE VI Physics Energy: Simple Machines
What is an ideal machine and what is its efficiency?
Asked by aninditaupadhyay007
28th September 2021
8:33 PM
Answered by Expert
JEE Main Physics Thermodynamics
plz help me in solving my doubt
Asked by manvirsingh2242
11th June 2022
9:16 AM
Answered by Expert
ICSE VI Physics Energy: Simple Machines
can a machine have an efficiency of 100%
Asked by rakshithdev18
15th December 2023
6:50 AM
Answered by Expert
