Answer:
e = 0.46 m
Explanation:
From the laws of friction, frictional force, F is proportional to normal reaction, R.
F₁ = μR
where μ is coefficient of friction; R = mg and g = 9.8 ms⁻²
Also, from Hooke's law, extension, e, in an elastic spring is proportional to applied force.
F₂ = Ke
where K is force constant of the spring
Since the box is just about to move, the coefficient of friction involved is static friction.
The force on the spring equals the frictional force experienced by the box the box; F₁ = F₂
Ke = μR
e = μR/K
where μ = 0.65; R = 18 kg * 9.8 ms⁻²; K = 250 N/m
e = (0.65 * 18 * 9.8)/250
e = 0.46 m
Answer:
I believe it will it is B and D. Because they have the same shape and on both the cart wil be speeding up.
I HOPE THIS HELPS! HAVE A GREAT DAY! :)
Mass is an internal characteristics of a body (or a particle). Under any circumstances it remains the same.
The value of weight, however, depends on the strength of gravitational force.
Quartzite is produced when grains of quartz in sandstone are welded together when the rock is subjected to high temperatures. Quartzite<span> or Quarzit is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. </span><span>It is formed when a quartz-rich sandstone is altered by the heat, pressure, </span>
The equation you would have to use for this would be :
Voltage = current * resistance
Voltage = 12 * 4
Voltage = 48
Answer : 48V