They are said to be directly related.
a) directly related.
This is Charles' Law.
Here is what we know:
a = ?, s = ?, u = 18.1m/s, v = zero/rest, t = 7.0s, m = 2110kg
(a = acceleration, s= displacement, u = initial velocity, v = final velocity, t = time and m is mass)
Now we choose a kinematic formula. Since we know v, u and t, we will use the formula: v = u+at and rearrange it so that we can find a.
a = v-u/t
a = 0-18.1/7.0 = -2.5857...
therefore, a = -2.6m/s
We have our acceleration, now let’s find the net force. To find the force we use one of Newtons laws of motion.
We will use Newtons second law since it describes what happens when one or more forces act upon an object.
F = ma
F = (2110kg)(-2.6m/s)
F = -5486 kg
Therefore the net force F = -5486 N
Answer:
1. Two substances burst into flames on contact
Explanation:
For a chemical reaction to occur between two or more substances, the reaction process must be reversible in nature.
According to options 2,3 and 4, they are all reversible reactions that is the product formed can return back to their original form except for the first option which is an irreversible reaction. Hence, two substances burst into flames on contact is not an indication of a chemical reaction since the burnt substances cannot return back to their original form. For example burning of paper into ashes is not a chemical change because ashes which is the final product cannot turn back to its original form which is paper.
Answer:
1.15 rad/s²
Explanation:
given,
angular speed of turntable = 45 rpm
=
=
time, t = 4.10 s
initial angular speed = 0 rad/s
angular acceleration.
Hence, the angular acceleration of the turntable is 1.15 rad/s²
Answer:
A pair of light or sound waves will experience interference when they pass through each other. Destructive interference occurs when the maximal of 2 waves are 180 degrees out of phrase: A positive displacement of one wave is canceled exactly by a negative displacement of the other wave.