Read the given passage carefully.
When air blows gently, it is called X . When air blows with great force, it is called Y. When wind blows very fast with thunder and lightning, it is called Z .
Select the option which correctly identifies X, Y and Z.
Refer to the given picture representing seed dispersal of three different plants.
Which of the following could be Z?
A sonic 'tape measure' is used to measure the length of a room. It measures a time interval of 0.060 s between transmitting a sound pulse and receiving the echo. The speed of sound in air is 330 m/s. How far is the reflecting wall from the 'tape measure'?
Refer to the given paragraph. Identify X and select the correct option. X is a long, soft plant fibre that can be spun into coarse and strong threads. It is a rainy season crop, which grows best in alluvial soil.
what is lilin ? and jute grows best in loamy soil
The position-time graph of a particle of mass 40 g is shown here. Which of the following statement is true about the graph?
(a) The particle receives an impulse of 8 x 10–4 kg m s–1 after every 1 s.
(b) The particle receives an impulse of 8 x 10–4 kg m s–1 after every 2 s.
(c) The particle receives an impulse of 4 x 10–4 kg m s–1 after every 1 s.
(d) The particle receives an impulse of 4 x 10–4 kg m s–1 after every 2 s.
how do we know the impulse?
Which example is correct for the appropriate use of a scientific tool?
AA scale can be used to measure the length of pond snails.
BA graduated cylinder can be used to collect pond snails.
CA ruler can be used to measure the mass of pond snails.
DA microscope can be used to measure the weight of a pond snail.
a scale is for measuring the weight of an object.