Answer:
0.0757 kg
Explanation:
m = mass of the body = 95 kg = 95000 g
ΔT = change in the temperature of the body = 0.45 °C
c = specific heat capacity of the body = 4.0 J/(g °C)
M = mass of water evaporated
L = latent heat of vaporization of water = 2260 J/g
Using conservation of heat
Heat gained by water = heat lost by body
ML = m c ΔT
M (2260) = (95000) (4.0) (0.45)
M = 75.7 g
M = 0.0757 kg
Answer:
The speed of the sound wave is 350 m
Explanation:
Given
Frequency of sound wave = 1000Hz = 1000 (since 1 = 1 Hertz (Hz))
Wavelength of sound wave = 35 cm
Speed of sound wave = ?
All waves have same the relation among frequency, sound and speed which is given by
v=fλ , where
v is the speed
f is frequency
λ is wavelength
Therefore, the speed of sound wave = 1000 x 35 cm
= 35000 cm
= 350 m
Hence the speed of the sound wave is 350 m
Los angelos fault got eem coach
Answer:
Robert Hooke
Was the first to use the word "cell"
Observed cork cells
Anton van Leeuwenhoek
Observed "animalcules"
Used polished lens
.
Explanation:
Anton van Leeuwenhoek is known as father of microbiology. He is credited to improve the quality of lens in microscope. His first observation of organisms called animalcules.
He is credited to have build microscope that could get magnified by 200 times. He used word animalcules for small organisms from pond water when first observed in microscope. He discovered protozoa and named it animalcules".
Robert Hooke is famed for discovering cell from a cork of plant. He observed a compartment or honey comb like divisions when observed these cork cells under the microscope and named it cell. He was only able to see the cell wall as the cork cells are dead cells.
Answer:
The second one because there is less <em><u>distance between them.</u></em>
