Objects in space follow the laws or rules of physics, just like objects on Earth do. Things in space have inertia. That is, they travel in a straight line unless there is a force that makes them stop or change. The movement of things in space is influenced by gravity.
Students were asked to place a mint in their mouths and determine how long it took for the mint to dissolve. The condition of the mint varied in each student group. One group of students were asked to leave a whole mint in their mouth, not moving it around, and let it dissolve. Another group swirled a mint, while the other groups used mints broken into smaller pieces. See the chart for all of the manipulated variable. After reviewing that data table, what kind of result would you predict for the swirled, whole mint?
A) The time is likely between 10-30 seconds.
B) The time is likely between 40-80 seconds.
C) The time is likely between 90-160 seconds.
D) The time is likely between 100-200 seconds.
ANSWER: B) The time is likely between 40-80 seconds.
EXPLANATION:The time is likely between 40-80 seconds.
By swirling the mint, this is agitating and creating a higher frequency of collisions between the saliva particles and mint particles, increasing the rate of dissolution. Therefore, the time is likely to be less than the mint cut in half but probably more than the mint when it is in small pieces.
Hi there!
The formula for velocity given acceleration:
v = at
Plug in given values:
v = 6.4(7) = 44.8 m/s
I think you need to attach the data table
Answer:
θ1 = 33.38°
Explanation:
From Snell's law of refraction,
n1•sinθ1 = n2•sinθ2
We are given ;
Angle of refraction; θ2 = (90 - 26.4°) = 63.6°
Index of refraction; n1 = 1.628
Index of refraction in air; n2 will have a constant value of 1
Now, we are looking for angle of incidence θ1, so let's make θ1 the subject;
n1•sinθ1 = n2•sinθ2
So, sinθ1 = (n2•sinθ2)/n1
Plugging in the relevant values;
sinθ1 = (1 x sin 63.6)/1.628
sinθ1 = 0.5502
θ1 = sin^(-1)0.5502
θ1 = 33.38°
