![subject](/tpl/images/cats/fizika.png)
Physics, 07.11.2020 19:30 Wemaybewrong
In the figure a 56 kg rock climber is in a lie-back climb along a fissure, with hands pulling on one side of the fissure and feet pressed against the opposite side. The fissure has width w = 0.20 m, and the center of mass of the climber is a horizontal distance d = 0.50 m from the fissure. The coefficient of static friction between hands and rock is μ1 = 0.45, and between boots and rock it is μ2 = 1.15. The climber adjusts the vertical distance h between hands and feet until the (identical) pull by the hands and push by the feet is the least that keeps him from slipping down the fissure. (He is on the verge of sliding.) (a) What is the least horizontal pull by the hands and push by the feet that will keep the climber stable? (b) What is the value of h?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 21:50
Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 09:00
Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:50
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
You know the right answer?
In the figure a 56 kg rock climber is in a lie-back climb along a fissure, with hands pulling on one...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31
![question](/tpl/images/cats/himiya.png)
Chemistry, 03.11.2019 03:31
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 03:31