1). The little projectile is affected by friction all the way through the block.
Friction robs some kinetic energy.
2). The block is affected by friction as it scrapes along the top of the post.
Friction robs some kinetic energy.
3). The block is also affected by friction with the air (air resistance) as it
falls to the ground. Friction robs some kinetic energy.
Answer:
B
Explanation:
there moving the waves through energy
When two waves with different frequencies combine, two new waves are created, with frequencies at the sum and difference of the two original ones. The new ones are called the 'beats'.
Original two frequencies: 267.8 Hz, 266.4 Hz .
Beat at the sum = (267.8 + 266.4) = 534.2 Hz .
Beat at the difference = (267.8 - 266.4) = 1.4 Hz .
In this situation, we're typically not aware of the sum-beat at 534 Hz.
Our consciousness is flooded with the two original frequencies, and
with hearing the whole combined sound going "wah wah wah" at
1.4 times per second. But the 534-Hz note is there too ... part of
what makes the whole thing sound so ragged and discordant.
Answer:
It's: double covalent bond
Explanation:
Hope this helps, have a good day
<span>1. The potential energy is 34.3J
2. The kinetic energy is 61,875J.
3. A 0.5 kg ball is at the top of a 20 meter tall hill.
a) What is the ball's kinetic energy ? The ball's kinetic energy is zero.
b) what is the ball's potential energy ? The ball's potential energy is 98.1J.
c) what is the ball's mechanical energy ? The ball's mechanical energy is 98.1J.
4. 2.0 kg toy has been thrown in the air it is 1.5m above the ground and is moving up at 3.0 m/s
a) What is the toy's kinetic energy ? The toy's kinetic energy is 9J.
b) what is the toy's potential energy ? The toy's potential energy is 29.43J.
c) what is the toy's mechanical energy ? The toy's mechanical energy s 38.43J.</span>
