It takes approximately 47 seconds for the sound of thunder to reach you at 20°C temperature.
The time it takes for the sound of thunder to reach you can be determined using the formula:
Time = Distance / Speed
Sound travels at a speed of approximately 343 meters per second at 20°C. Therefore, to calculate the time it takes for the sound to reach you, divide the distance by the speed:
Time = 16,090 meters / 343 meters per second
Time = 46.97 seconds
So, it takes approximately 47 seconds for the sound of thunder to reach you at 20°C temperature.
#SPJ1
Answer:
The main difference between the internal combustion engine and the diesel engine is that the diesel engine: Has no ignition system
mark brainliest ;)
b. resistance
c. electric charge
d. batteries and wall sockets
B) 1000 g of sodium chloride (NaCl)
C) 1000 g of calcium carbonate (CaCO3)
D) 1000 g of potassium sulfate (K2SO4)
Answer:
Option A
Explanation:
The number of particles a solute provides in a solution depends on its chemical formula and how it dissociates or ionizes in water.
A) 1000 g of glucose (C6H12O6) does not ionize or dissociate in water, so it remains as individual molecules. Therefore, it provides the fewest particles since it's composed of only C, H, and O atoms.
B) 1000 g of sodium chloride (NaCl) dissociates into two ions (Na⁺ and Cl⁻) in water, so it provides two particles per formula unit.
C) 1000 g of calcium carbonate (CaCO3) can dissociate into three ions (Ca²⁺, CO₃²⁻) in water, so it provides three particles per formula unit.
D) 1000 g of potassium sulfate (K2SO4) can dissociate into three ions (2K⁺ and SO₄²⁻) in water, so it also provides three particles per formula unit.
So, option A, 1000 g of glucose (C6H12O6), provides the fewest number of particles because it doesn't dissociate or ionize in water.
Buzz Aldrin
Neil Armstrong
John Glenn
Yes, John Glenn was the first to orbit the earth but the question I read was who WALKED ON THE MOON.....the answer to who was the FIRST to walk on the moon... is Neil Armstrong but Buzz Aldrin also walked and was there with Armstrong but wasn't the first. You have to be careful about the astronaut 'firsts'. Alan Shepherd was the first in space....John Glenn was the first to orbit the earth....Edward White was the first to 'walk in space' and Neil Armstrong was the first man to walk on the moon. Also remember that all of these were American Astronaut firsts. The Russians actually put up the first man in space. Yuri Gagarin was the first man. Buzz Aldrin landed and walked on the moon also.
B) because electromagnetic waves transmit energy without compressing the particles of the medium
C) because electromagnetic waves generate their own particles for compression and use these for movement
D) because electromagnetic waves move in two-dimensional space, the particles of mediums exist in 3-D space
Answer:
B) because electromagnetic waves transmit energy without compressing the particles of the medium
Explanation:
Electromagnetic waves are the combination of electric and magnetic field which will oscillate perpendicular to each other. And the propagation of wave here is perpendicular to both electric and magnetic field.
So here in this type of wave propagation we do not require any medium as this is propagation of electric and magnetic field.
So here no need of compression or rarefaction of medium molecules and hence it do not need any medium to travel
so here correct answer is
B) because electromagnetic waves transmit energy without compressing the particles of the medium
Answer:
D
Explanation: