Answer:
0.39 J/g°c
Explanation:
= heat / unit of mass × unit of temperature
986.75J/16.75g
= 58.9 J/g
∆T=175°c - 25°c = 150°c
986.75 / 150°c = 6.578
986.75 / 16.75g.150°c = 0.30 j/g°c
What is this question for? Like wat subject
Answer:
See the answers below.
Explanation:
a) KEf, This term refers to the final kinetic energy i.e. when the velocity has reached 27 [m/s].
To calculate this energy we must use the following equation that relates velocity and mass to kinetic energy.
where:
m = mass = 2.2*10³[kg]
v = velocity = 27 [m/s]
b)
Power is defined as the amount of energy or work done over a certain time, it can be calculated by means of the following equation.
where:
t = time = 2.4 [s]
P = Power [W]
Now replacing:
The answer is 35
The unit is ohms
Answer:
W = 320.30 J
Explanation:
To calculate the net work done over the block you take into account all implied forces:
(1)
The gravitational force and friction force are against the applied force F.
θ = 26°
F: applied force = 340N
Fg: gravitational force = Mg = (40.0kg)(9.8m/s^2) = 392N
Ff: friction force =
Next, you replace to obtain the net force:
Finally, the net work, for 4 m, is: