The hour and minute hands of a tower clock like big ben in london are 2.79 m and 4.44 m long and have masses of 58.2 kg and 90 kg, respectively. calculate the total rotational kinetic energy of the two hands about the axis of rotation. model the hands as long thin rods. answer in units of j.
Answers: 2
Physics, 21.06.2019 23:00
For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.
Answers: 1
Physics, 22.06.2019 02:30
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
Answers: 1
Physics, 22.06.2019 09:00
In the first law of thermodynamics, triangle e=q-w, what does q stand for
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Physics, 22.06.2019 13:00
The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
Answers: 3
The hour and minute hands of a tower clock like big ben in london are 2.79 m and 4.44 m long and hav...
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