Answer:
cycles, graphing, precise measurementation
Explanation:
Answer:
C) W = - 190 J
Explanation:
Notation
Wf = work done by the friction force (unknown)
Ff = force of the friction
d = distance travelled by the box = (2 pi 1.82 m) = 11.435 m
I believe it is a conductor I am learning this myself so I may be wrong
Your answer would be 0.20 Hz
Answer:
The final velocity of the car is 1.85 m/s
Explanation:
Hi there!
The initial kinetic energy of the toy car can be calculated as follows:
KE = 1/2 · m · v²
Where:
KE = kinetic energy.
m = mass.
v = velocity.
KE = 1/2 · 0.100 kg · (2.66 m/s)² = 0.354 J
The gain in altitude produces a gain in potential energy. This gain in potential energy is equal to the loss in kinetic energy. So let´s calculate the potential energy of the toy car after gaining an altitude of 0.186 m.
PE = m · g · h
Where:
PE = potential energy.
m = mass.
g = acceleration due to gravity.
h = height.
PE = 0.100 kg · 9.8 m/s² · 0.186 m = 0.182 J
The final kinetic energy will be: 0.354 J - 0.182 J = 0.172.
Using the equation of kinetic energy, we can obtain the velocity of the toy car after running up the slope:
KE = 1/2 · m · v²
0.172 J = 1/2 · 0.100 kg · v²
2 · 0.172 J / 0.100 kg = v²
v = 1.85 m/s
The final velocity of the car is 1.85 m/s