Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Sansar Chand Sharma 6 years, 8 months ago
- 1 answers
Posted by Adarsh Kumar 6 years, 8 months ago
- 0 answers
Posted by Padmini Soni 6 years, 8 months ago
- 1 answers
Gaurav Seth 6 years, 8 months ago
A charge q is placed at the centre C of the line joining two equal charges Q each, at points A and B. Let AB=2a
If the net force on each charge will be zero, the system will be in equilibrium.
Let us consider the charge Q at A. Under equilibrium, the total force on this charge is
Posted by Chandranshu Singh 6 years, 8 months ago
- 1 answers
Gaurav Seth 6 years, 8 months ago
Read this Article:
<a href="https://www.dnaindia.com/education/report-cbse-shifts-class-12-chapters-to-11th-reduces-burden-2596003">https://www.dnaindia.com/education/report-cbse-shifts-class-12-chapters-to-11th-reduces-burden-2596003</a>
Posted by Ayush Kumar 6 years, 8 months ago
- 0 answers
Posted by Diljani . 6 years, 8 months ago
- 0 answers
Posted by Nimesh Kumar 6 years, 8 months ago
- 1 answers
Riya Sharma 6 years, 8 months ago
Posted by Murtaza Haider Hasan 6 years, 8 months ago
- 0 answers
Posted by Harsh R 6 years, 8 months ago
- 1 answers
Posted by Clash Royale King 6 years, 8 months ago
- 1 answers
Prakash Roy 6 years, 8 months ago
Posted by Arun Kumar Yadav 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Magnitude of any given physical quantity may vary over a wide range, therefore, different units of same physical quantity are required.
For example:
1. Mass ranges from 10-30 kg (for an electron) to 1053 kg (for the known universe). We need different units to measure them like miligram, gram, kilogram etc.
2. The length of a pen can be easily measured in cm, the height of a tree can be measured in metres, the distance between two cities can be measured in kilometres and distance between two heavenly bodies can be measured in light year.
Posted by Anurag Tripathi 6 years, 8 months ago
- 3 answers
Sagar Pandya 6 years, 8 months ago
Posted by C R 6 years, 8 months ago
- 0 answers
Posted by Komal Dabber 6 years, 8 months ago
- 3 answers
Sagar Pandya 6 years, 8 months ago
Posted by Noah Karki 6 years, 8 months ago
- 1 answers
Satyam Salunkhe 6 years, 8 months ago
Posted by Priya Gupta 6 years, 8 months ago
- 1 answers
Satyam Salunkhe 6 years, 8 months ago
Posted by Priya Gupta 6 years, 8 months ago
- 2 answers
Yogita Ingle 6 years, 8 months ago
Ductile material : Ductile materials are materials that can be plastically twisted with no crack. They have the tendency to hold the deformation that occurs in the plastic region. If tensile force is applied, these materials can be stretched into a wire, but if compressive force is applied, they can be deformed into sheets. Common ductile materials are copper, aluminum, and steel.
Posted by Priya Gupta 6 years, 8 months ago
- 0 answers
Posted by Priya Gupta 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
In the straight up situation, the angle of inclination is more than the wind up situation. When mountain roads go wind up, the slope will be less than when the roads go straight up. So the frictional force is very large when the road winds up. So the tire of the vehicle will not slip easily when the roads go wind up. Another thing is that, in the straight up situation due to the large angle of inclination you have to work more to go up against your gravity, but when the roads are wind up due to the small angle of inclination you have to work less to go up against your gravity. That is why mountain roads rarely go straight up the slope but wind up gradually.
Posted by Priya Gupta 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
- When the force acts in a direction at right angle to the direction of displacement (cos90° = 0), no work is done (zero work).
- Work done by the force is negative if the angle between force and displacement is obtuse (90°<θ<180°) as cosθ is negative. This signifies, when the force and displacement are in opposite direction, work done is negative. This work is said to be done by the body.
Posted by Priya Gupta 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
Power is rate of doing work i.e. ,
p = {tex}\frac{w}{t}{/tex}
where w is work done in t seconds.
now, we know work is given by -
w = f.x
where f is the force acting for x distance.
putting this value of work in the equation of power we'll get.
p ={tex} \frac{fx}{t} \: \: \:{/tex}
and
v ={tex} \frac{x}{t}{/tex}
therefore P= f.v
Posted by Da Ya 6 years, 8 months ago
- 0 answers
Posted by Da Ya 6 years, 8 months ago
- 3 answers
Posted by Pragati Yadav 6 years, 8 months ago
- 1 answers
Gaurav Seth 6 years, 8 months ago
Yes, centripetal force causes acceleration but no work is done by the force. A centripetal force is a force that makes a body follow a curved path. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path. Since the direction is always orthogonal(perpendicular) work done is zero.
Posted by Priya Gupta 6 years, 8 months ago
- 1 answers
Yogita Ingle 6 years, 8 months ago
This process takes place for the duration of the day. Both the sea, as well as the land surface is heated up by the sun. The sea heats up slower than the land because it has a much higher heat capacity. Thus, the temperature over the land surface increases, in turn, heating up the air around it. An expansion occurs in the less dense warm air and an area over the land having low pressure is developed. At the same time on the top of the sea, a high-pressure area develops. Due to the difference in pressure and the air flows from the high pressure over the sea to the low pressure over the land. This flow of air from the sea to the land is termed as the sea breeze.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Avichal Yadav 6 years, 8 months ago
5Thank You