MULTIMETER combines the functions of ammeter, voltmeter and ohmmeter as a minimum.
Answer:
As the marble starts rolling down the roller coaster, the amount of potential energy stored in the marble decreases while its kinetic energy increases. Potential energy is also converted into heat energy due to friction.
Explanation:
As the marble rolls down the hill its potential energy is converted to kinetic energy (its height decreases, but its velocity increases). When the marble goes back up the loop its height increases again and its velocity decreases, changing kinetic energy into potential energy.
Answer:
It will travel to the infinity and beyond
Answer:
most stubborn is Jill, F = 227.97 N and θ = 43º
Explanation:
As the forces give us we must use Newton's second law, in this case as the donkey does not move the acceleration is zero
Let's start by breaking down the forces
Jack
F1 = 97.3 i ^ N
Jill
F2 = 60.9 N
θ = 45º to the left
This angle measured from the positive part of the x axis is T ’= 90 + 45 = 135º
F2x = F2 cos (θ’)
F2y = F2 sin (θ’)
F2x = 60.9 cos (135)
F2y = 60.9 sin (135)
F2x = -43.06 N
F2y = 43.06 N
Jane
F3 = 159N
T = 45º
F3x = F3 cos θ
F3y = F3 sin θ
F3x = 159 cos 45
F3y = 159 sin 45
F3x = 112.43 N
F3y = 112.43 N
a) The most stubborn of the three must be the one who pulls in the opposite direction, bone Jill who is pulling to the left while the other two do it to the right
b) We perform the summary of the forces in each axis
X axis
Fx = F1 + F2x + F3x
Fx = 97.3 -43.06 +112.43
Fx = 166.67 N
Axis y
Fy = F2y + F3y
Fy = 43.06 + 112.43
Fy = 155.49 N
F = √ Fx²+Fy²
F = 166.67² + 155.49²
F = 227.97 N
We use trigonometry
tan θ = Fy / Fx
θ = tan⁻¹ (155.49 / 166.67)
θ = 43º
Regarding the x axis