Answer:
Explanation:
108,000 beats per hour
613,200 hours in 70 years
108,000 times 613,200 =
66225600000 beats
The work done on the box by the applied force is zero.
The work done by the force of gravity is 75.95 J
The work done on the box by the normal force is 75.95 J.
<h3>The given parameters:</h3>
- Mass of the box, m = 3.1 kg
- Distance moved by the box, d = 2.5 m
- Coefficient of friction, = 0.35
- Inclination of the force, θ = 30⁰
<h3>What is work - done?</h3>
- Work is said to be done when the applied force moves an object to a certain distance
The work done on the box by the applied force is calculated as;

where;
a is the acceleration of the box
The acceleration of the box is zero since the box moved at a constant speed.

The work done by the force of gravity is calculated as follows;

The work done on the box by the normal force is calculated as follows;

Learn more about work done here: brainly.com/question/8119756
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
<em>800 km/h</em>
<em>Hi there ! </em>
<em>1 hour = 60 min</em>
<em>30 min = 0.5 hour</em>
<em />
<em>400 km ............ 0.5 h</em>
<em> x km .............. 1 h</em>
<em />
<em>x = 400km×1h/0.5h</em>
<em>= 800 km/h</em>
<em />
<em>Good luck</em>