Answer:
The chemical reactions are depends up on the temperature. Temperature is a measure of motion of the particles, which increases by supplying thermal heat energy. According to the Kinetic molecular theory, if the reaction happens between two compounds, they collide with enough energy to overcome the activation of energy barrier.
The kinetic energy of the particles increases with increase in temperature. This results in collision being more energetic and therefore more likely to be able to overcome the activation barrier. The rate of chemical reactions increases with more collision of molecules.
<em>So, the temperature is the important parameter to increase the rate of reactions. </em>
The answer is (B. The study of Matter and Energy) but technically you could consider physics all of these as engineering is based on physics and that would be the study of inventions, chemistry and biology were both discovered because of physics, and physics invokes more math than any other subject as it applies math to the entire Universe.
Answer:
Explanation:
The range of a projectile is given by the formula
where in this case, we have
d = 100 m is the range
u is the initial speed (the magnitude of the initial velocity)
g = 9.8 m/s^2 is the acceleration of gravity
is the angle of projection
Solving for u, we find:
Now we can easily find the components of the initial velocity:
So, the initial velocity of the ball is
where i and j are the unit vector indicating the horizontal and vertical direction.
Answer:
a) 4.40 s
b) 2.20 s
Explanation:
Given parameters are:
At constant power ,
initial speed of the car,
final speed of the car, mph
At full power,
initial speed of the car,
final speed of the car, mph
a)
At constant power,
At full power,
So
So, time to reach 64 mph speed is 4 times more than the initial time
s
b)
For final 64 mph speed,
= s