Answer:
8 atm
Explanation:
Ideal gas law:
PV = nRT
where P is pressure, V is volume, n is moles, R is universal gas constant, and T is absolute temperature.
If n is constant:
PV / T = PV / T
(4 atm) (60 L) / (27 + 273) K = P (40 L) / (127 + 273) K
0.8 atm = 0.1 P
P = 8 atm
Sand has alot of friction because how rough it is and they needed to pull instead of pushing
The spring exerts on each block an outward force of magnitude





<h3>What is kinetic energy?</h3>
The kinetic energy is the energy that it possesses due to its motion.
To accelerate an object, we need to apply force. To apply force, we have to be compelled to do work. When work is done on an object, energy is exchanged, and the object moves with a unused steady speed. We call the energy that's exchanged kinetic energy, and it depends on the mass and speed accomplished.
Kinetic energy is a scalar quantity, it is entirely described by magnitude
To learn more about kinetic energy , visit:
brainly.com/question/11592500
#SPJ4
Answer:
v (speed) = S / t = 4 * 400 m / (6 * 60 sec) = 4.4 m/s
The average velocity is zero because there is no net vector displacement.
Well he could remove the drawers to make it lighter, which causes less friction