Determine whether each substance will sink or float in corn syrup, which has a density of 1.36 g/cm3. Write “sink” or “float” in
2 answers:
Explanation:
- A substance will floats if it is having lower density than the density of the liquid in which it is placed.
- A substance will sink if it is having density greater than the density of the liquid in which it is kept.
Density of corn syrup =
1) Density of gasoline =
Density of the gasoline is less than the the density of corn syrup which means it will float in corn syrup.
2) Density of water =
Density of the water is less than the the density of corn syrup which means it will float in corn syrup.
3) Density of honey =
Density of the gasoline is more than the the density of corn syrup which means it will sink in corn syrup.
4) Density of titanium =
Density of the titanium is more than the the density of corn syrup which means it will sink in corn syrup.
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1) Average speed
2) Displacement
Explanation:
1)
Speed is a scalar quantity which gives a measure of how fast a body is moving. It is equal to the ratio between the distance travelled by an object and the time taken to cover that distance:
where
d is the distance covered
is the time taken
It is important to note that being a scalar, speed does not have any direction. Moreover, distance is also a scalar quantity, which corresponds to the total length of the path covered by the object, regardless on the direction taken.
So, the equation "travelled distance/elapsed time" corresponds to the average speed. (where the term average refers to the fact we are not measuring the speed at a specific instant in time, but on a certain time interval .
2)
Velocity is a vector quantity, so it has both a magnitude and a direction.
The magnitude of the velocity is given by:
where
is the change in position (or displacement) of the object
is the time taken
And the direction of the velocity corresponds to the direction of the displacement.
We must note that while distance does not depend on the direction, displacement does. In fact, displacement measures the difference between the initial and final position of the object.
Therefore, the equation "change in position / elapsed time" is equal to the average velocity.
Learn more about speed and velocity:
brainly.com/question/8893949 (speed)
brainly.com/question/5063905 (speed vs velocity)
brainly.com/question/5248528 (velocity)
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Answer:
a=2.304×10¹⁶m/s²
Explanation:
Given data
Distance d=2.5 nm=2,5×10⁻⁹m
Mass of proton m=1.6×10⁻²⁷kg
charge of proton q=1.6×10⁻¹⁹C
To find
acceleration a
Solution
Apply the Coulombs Law
Where k is coulombs constant (k=9×10⁹Nm²/C²)
q=q₁=q₂
r=d
So