The maximum efficiency is 10%
Explanation:
The maximum efficiency of a machine is given by:
where
is the temperature of the hot reservoir
is the temperature of the cold reservoir
For the machine in this problem, we have:
is the temperature of the hot reservoir
is the temperature of the cold reservoir
substituting, we find the max efficiency:
So, the efficiency is 0.10 (10%).
Learn more about temperature:
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Answer:
a). linear acceleration of the hoop and block = 3.2895 <u>m</u>
s²
c). magnitude of the angular acceleration of the disk pulley = 41.119 <u>rad</u>
s²
d). tensions in the string between the block and disk pulley = 11.842 N
tensions in the string between the hoop and disk pulley = 15.625 N
check the pictures below for further explanation and for the remaining answers. I hope it helps you. Thank you
Explanation:
Start by writing "F=ma" equations for each of the things that moves. Also, since some of the objects (the pulley and the orange sphere) rotate, you should write "τ = Iα" equations (net torque = moment of inertia × angular acceleration) for those. In the end, you should have enough equations that you can combine them and solve for the desired quantities.
First, the hoop. There's no indication that it rotates, so we don't need a "τ = Iα" equation for it; just do "F=ma". The hoop has gravity ((mhoop)g) pulling down, and the tension in the vertical string (call it "T_v") pulling up.
Fnet = ma
Answer:
Electric field,
Explanation:
Given that,
Charge,
We need to find the magnitude of electric field 17.1 cm (0.171 m) above an isolated charge. Electric field at a point is given by :
So, the electric field is . Hence, this is the required solution.