For the first one, the correct answer would be "<span>Substance changes its form but not its molecular composition.". During a physical change (let's say cutting paper), the substance has its shape changed, but it is still itself (paper).
</span><span>The second one is a bit trickier: </span>
Kinetic energy of a molecule is directly influenced by temperature. If there is a higher temperature it will have a higher kinetic energy which means the molecule moves at a higher velocity. This will increase the chance of particles bouncing off of each other during the chemical reaction. That explains why the rate of reaction will be higher at a higher temperature, rather than higher at a cool temperature. The correct answer would be lower at 39F.
Answer:
Explanation:
An inelastic collision is one in which the internal kinetic energy changes (it is not conserved) . The two objects come to rest after sticking together, conserving momentum. But the internal kinetic energy is zero after the collision.
Some types of storage tanks are exempt from the federal regulations on USTs, including
: A) tanks that store heating oil burned on the premises.
<h3>What are Underground Storage Tank Systems?</h3>
Underground Storage Tank systems are tanks along with the underground piping that has at least 10% of their total volume underground.
Some of the storage tanks that are exempt from the federal regulations on USTs are;
- Farm and residential tanks of 1,100 gallons or less capacity holding motor fuel used for noncommercial purposes.
- Tanks storing heating oil used on the premises where it is stored.
- Tanks of 110 gallons or less capacity.
Learn more about Underground Storage Tank systems here:
brainly.com/question/26571
The correct answer is
c) Neither person is correct because light does not change frequency when it travels through different media
In fact, light changes both wavelength and speed when it travels through different media, but the frequency remains the same.
Answer:
Explanation:
mass, m = 0.520 kg
K = 8 N/m
Amplitude, A = 10.8 cm
(a)
Angular speed,
maximum speed = ωA = 3.92 x 10.8 = 42.34 cm/s
(b) maximum acceleration, a = ω²A = 3.92 x 3.92 x 10.8 = 166 cm/s^2
(c) Speed of the particle is given by
v = 33 cm/s
(d) acceleration
a = ω²y = 3.92 x 3.92 x 6.80 = 104.5 cm/s^2
(e) x = A Sinωt
2.80 = 10.8 Sin 3.92 t
Sin 3.92 t = 0.259
3.92 t = 0.262
t = 0.0668 second