As you travel up into the mountains, you notice discomfort in your ears. This is due to ...A. the low pressure in your ears.
B. the low pressure at the bottom.
C. the low pressure in the mountain.
D. the high pressure in the mountains.
Answers
Answer: The correct answer is the low pressure in the mountains
Explanation:
The air pressure is lower in the mountains. As we travel up into the mountains, the air inside our ears takes some time to adjust the pressure change.
This unequal pressure causes discomfort in ears while ascending and descending on the mountain. The condition of discomfort in ear is caused by the pressure difference between the outside and inside the eardrum.
Therefore, as we travel up to into the mountains, we notice discomfort in our ears. This is due to the low pressure in the mountain.
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Why evaporation are called surface phenomenon?
Sally is going shopping with her friend Susan at the mall which is located 10 kilometers away from her house she drives half way to the mall and then realizes she forgot her purse at home she turns around and goes back home to get it and drives directly from her house to the mall what is the total distance that dally traveled ?
The sun is the ultimate source for energy on the Earth.a. Trueb. False
Answers
b. elevation increases.
c. acceleration decreases.
d. gravity increas
Answers
Answer:
As elevation increases, air pressure decreases, molecules spread out, and air temperature cools.
Explanation:
B) UV waves are higher frequency and carry more energy.
C) UV waves have a lower frequency and carry more energy.
D) UV waves travel faster than visible light and have more energy.
Answers
B) UV waves are higher frequency and carry more energy.
In fact, UV waves have higher frequency than visible light. For comparison, visible light has frequency in the range 430-770 THz (
The energy of electromagnetic radiation is proportional to its frequency, according to the equation
where h is the Planck constant and f is the frequency. We see that the higher the frequency, the greater the energy, so UV waves carry more energy than visible light.
Answers
Answer:
Given :-
Initial Velocity (u) = 5 m/s
Final Velocity (v) = 15 m/s
Time (t) = 7.5 seconds
To Find :-
Distance (s) = ?
Solution :-
First of all we will find the acceleration of car :
→ Acceleration = Final Velocity - Initial Velocity ÷ Time
→ Acceleration = 15 - 5 ÷ 7.5
→ Acceleration = 10 ÷ 7.5
→ Acceleration = 1.3 m/s²
Now, by using Second equation of motion we can find distance travelled by the car :
→ s = ut + ½ at²
→ s = 5 × 7.5 + ½ × 1.3 × (7.5)²
→ s = 37.5 + ½ × 1.3 × 56.25
→ s = 37.5 + 1.3 × 28.125
→ s = 37.5 + 29.425
→ s = 66.925 m
Therefore,the distance travelled by the car is 66.925 m.
b. the north end of Earth’s axis is tilted away from the sun.
c. the north end of Earth’s axis is tilted toward the sun.
d. Earth’s axis is parallel to the sun’s rays.
Answers
Answer: The correct answer is Option a.
Explanation:
An equinox is defined as an event that occurs when Sun's rays fall on the equator at noon and at an angle of 90°.
The axis of rotation of Earth must be perpendicular to the Sun's rays for this event to occur.
If the axis is titled to some angle even, then equinox will not occur.
Hence, the correct answer is Option a.
Answers
m=mass
g=acceleration due to gravity
h=height
Let the twig's mass be M
therefore at the start, the twig has 200*9.8*M potential energy.
During its fall 40% twig's energy is converted into thermal energy and the remaining 60% of this will turn into kinetic energy during the fall, giving us 1176M
Now the equation for kinetic energy, K.E is 0.5*m*v^2
m is mass
v is velocity
Therefore 1176M=0.5*M*v^2 (mass will divide out)
velocity is 48.49 m/s