Answer:
v=82 m/s
s=116m
Explanation:
a=20t

using condition given at t=0

c=-8
now equation becomes
v=10t²-8
v at t= 3s v=82 m/s
again


now using condition given s=50 at t=0
b=50
now equation becomes

calculating s at t=3s
s=116m
Answer:
2132hp ed enregia
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Explanation:
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R=10+15+30
55 is the answer to the question
Answer:
0.05 J/K
Explanation:
Given data in question
heat (Q) = 10 J
temperature (T) = 200 K
to find out
the change in entropy of the system
Solution
we will solve this by the entropy change equation
i.e ΔS = ΔQ/T ...................1
put the value of heat Q and Temperature T in equation 1
ΔS is the enthalpy change and T is the temperature
so ΔS = 10/200
ΔS = 0.05 J/K
Answer:
The power of force F is 115.2 W
Explanation:
Use following formula
Power = F x V
= F cos0
= (30) x 4/5
= 24N
Now Calculate V using following formula
V =
+ at
= 0
a =
/ m
a = 24N / 20 kg
a = 1.2m / 
no place value in the formula of V
V = 0 + (1.2)(4)
V = 4.8 m/s
So,
Power =
x V
Power = 24 x 4.8
Power = 115.2 W