Question

1
A. Multiple choice questions

With what force does every object in the universe attract other objects near it?

a) frictional force
b) gravitational force
c) elastic force
d) mechanical force
2. What is the force that makes a material resist stretching and go back to its original state?

a) muscular force
b) frictional force
c) elastic force
d) gravitational force
3. Which of these is a second-class lever?

a) scissors
b) pliers
C) tweezers
d) bottle opener
4. Which of these is not a simple machine?

a) see-saw
b) scissors
c) bicycle
d) screwdriver
5. What is used to convert water energy to electrical energy?

a) turbine
b) windmill
C) solar cooker
d) all of these​

Answer 1

Answer:

in which class are u hi hello

Answer 2

Answer:

1.)

→(B) Gravitational force

It's like the earth on you and keeping you on the ground. That pull is gravity at work. Every object in the universe that has mass exerts a gravitational force, on every other mass. The size of the pull depends on the masses of the objects.

2.)

→(C) Elastic force

The farther the material is stretched or compressed, the greater the elastic force becomes. As soon as the stretching or compressing force is released, elastic force causes the material to spring back to its original shape.

3.)

→(D) Bottle opener

If the load is closer to the fulcrum than the effort, then less effort will be required to move the load. If the load is closer to the effort than the fulcrum, then more effort will be required to move the load. A wheelbarrow, a bottle opener, and an oar are examples of second class levers.

4.)

→(C) Bicycle

The bicycle and crane are the example of a complex machine

5.)

→(B) Windmill

The terms "wind energy" and "wind power" both describe the process by which the wind is used to generate mechanical power or electricity. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity.

→Hope this will help you :)