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01. Fill in the blanks.
1. Acceleration is the rate of change of
with respect to time.
2. A
and a
are used to express the magnitude of a physical quantity,
3. Drying the food grain from farms under the hot sun is called
4. While freezing, the temporalf wat
of water is lowered:
the
of the air.
6. An object is made of
7. Scientists have discovered
elements of these,
occur in
nature.
8. The intensity of magnetic field is indicated by the lines of
b0
9. A medium is necessary for DUOD Ooof of sound
10. The organelle called the
is present in plant cells only
11. Ripening of fruit is a
change
p090f of sound
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Answers
Answer:
Putting Acceleration in Conceptual terms: Acceleration is a quantity in physics that is defined to be the rate of change in the velocity of an object over time. Since velocity is a vector, acceleration describes the rate of change in the magnitude and direction of the velocity of an object.
Magnitude is the amount or number which is written before a unit and is used to express physical quantity. Here, magnitude is 20 and unit is m/s. Here, magnitude is 10 and unit is N(Newton). Here, magnitude is 15 and unit is P(Pascal)
Answer: (a) Drying the food grains from farms under the hot sun is called dehydration.
hile freezing, the temperature of water is lowered. Explanation: When water freezes then the temperature of the water is lowered. ... So,While freezing, the temperature of water is lowered.
hat is an object? An object is a thing that is made of one or more material. A spoon is an object and it is made of metal. Rubber boots are an object and they are made of rubber.
The elements found in nature are elements with atomic numbers 1 (hydrogen) through 98 (californium). Ten of these elements occur in trace amounts: technetium (No. 43), promethium (61), astatine (85), francium (87), neptunium (93), plutonium (94), americium (95), curium (96), berkelium (97), and californium (98)
he intensity of a magnetic field is indicated by the *magnetic field lines*. - Magnetic field line show the direction of a magnet's force and the strength of a magnet. - aka magnetic flux lines. - Line density indicates strength of magnetic field
Explanation: Sound always needs a medium to propagate from one point to another point. Sound can not propagate without any medium or in a vacuum. Sound can propagate through any medium like solid, liquid, gaS
Chloroplast
Explanation: