Answer:
Answer is given below:
Explanation:
<em>Given Data:</em>
mass = 80kg
acceleration = 4 ms
force = 800N
<em>Find out:</em>
friction = ?
<em>Formula</em><em>:</em>
F-friction = weight - f-net
<em>Solution:</em>
weight = (80)(10)
= 800 N
F-net = ma =(80)(4) = 320N
F-friction = weight - F-net
=800 N - 320N
=480N
<em>Answer</em> :
Friction = 480 N
Answer:
o and cl
Explanation:
metals and nonmetals tend to form ionic bonds
Explanation:
The given data is as follows.
n = 1 mol, 
Q = 1500 J, R = 8.314 J/mol k
(a) 
And, according to the first law of thermodynamics

And, in an isothermal process the change in internal energy of the gas is zero.
Hence, 0 = Q - W
or, W = Q
Expression for work done in an isothermal process is as follows.
W = 
As W = Q, Hence expression for Q will also be given as follows.
Q = 
Now,

[/tex]\Delta S = nR ln \frac{V_{f}}{V_{i}}[/tex]
= 
= nR ln 2
= 
= 5.76 J/K
Therefore, change in entropy is 5.76 J/K.
(b) As, Q = 
= 
= nRT ln 2
T = 
= 
= 260.4 K
Therefore, temperature of the gas is 260.4 K.