Home works and Assignments Online

Home » Class IX (S-II) » Physic IX A,B,C

Physic IX A,B,C

Shift-II

Date of submission: 2 Jan., 2015

1. What should be the angle between the directions of displacement and force to get maximum work?

2. Name the kind of energy stored in a dam.

3. How much watts are there in one horse power

4. Calculate the work done when a force of 6000 N moves a body through a distance of 9 m.

5. An electric heater is rated 1500 W. How much energy does it use in 10 hours?

6. What is meant by power? Define the terms watt and kilowatt. Also state the bigger units of power.

7. Explain the term work. Define and explain positive, negative and zero work by giving suitable examples.

8. How does the kinetic energy of an object change, if its momentum is doubled?

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: