Im pretty sure its Rolling friction also know as rolling resistance
What do you want help with
I see you're in Middle School, so I've got a hunch that they want you
to say "the dresser because it has more mass". But that's a poor
answer, to a poor question.
The fact is that there's no way to tell.
The force it takes to move either object across the floor does NOT really
depend on just its mass. It depends on both the object's mass AND the
friction between the object and the floor. And THAT depends on the shape
of the feet where they touch the floor, and what kind of material the feet and
the floor are made of.
So it seems to me that we really don't have enough information to answer
the question with.
But again, I suspect that the answer they want is "the dresser because
it has more mass".
Answer:
Given:
Mass (m) = 6.8 kg
Speed (v) = 5.0 m/s
To Find:
Kinetic energy (KE)
Explanation:
Formula:
Substituting values of m & v in the equation:
Answer: 347 bar
Explanation:1) Data:
n = 2520 moles
T = 27 + 273.15 = 298.15 K
V = 180 liter
p = ?
2) Formula
Ideal gas equation: pV = nRT
3) Solution:
p = nRT/V = 2520 mol × 0.0821 atm×liter/K×mol ×298.15K / 180 liter = 342.7 atm
Conversion: 342.7 atm × 1,01325 bar / atm = 347 bar
