A.) An isolated system has its kinetic energy decrease by 10 J while its potential energy...
A.)
An isolated system has its kinetic energy decrease by 10 J while its potential energy increases by 5 J. What is the change in the system's internal energy (in J)?
B.)
A 2-kg ball is dropped from a height of 2 m. What is the change in the kinetic energy of the ball (in J) as it travels through this distance to the floor?
Homework Answers
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A.)
An isolated system has its kinetic energy decrease by 10 J while
its potential energy...
How will you solve? system's intemal energy by 354 J The internal energy of a system...
How will you solve?
system's intemal energy by 354 J The internal energy of a system increases by 468 J, while losing 345 J of heat.How much egy transferred by work? heat is increased by 145 J, while it does 189 J of work, What is the change in the systems internal energy?
In process A, 48 J of work are done on the system and 72 J of...
In process A, 48 J of work are done on the system and 72 J of heat are added to the system. Find the change in the system's internal energy. In process B, the system does 48 J of work and 72 J of heat are added to the system. What is the change in the system's internal energy? In process C, the system's internal energy decreases by 129 J while the system performs 129 J of work on its...
A system loses 860 J of potential energy. In the process, it does 510 J of...
A system loses 860 J of potential energy. In the process, it does 510 J of work on the environment and the thermal energy increases by 100 J. Find the change in kinetic energy ΔK.
A system loses 690 J of potential energy. In the process, it does 700 J of...
A system loses 690 J of potential energy. In the process, it does 700 J of work on the environment and the thermal energy increases by 140 J . Find the change in kinetic energy ΔK.
Question 10 An object has 12 J of kinetic energy, 7 J of gravitational potential energy,...
Question 10 An object has 12 J of kinetic energy, 7 J of gravitational potential energy, and 16 J of elastic potential energy. What is the total mechanical energy? 35 J 23 J 28 J 19 J Question 12 A cube-shaped object with a mass of 19.3 kg measures an equal length of 0.1 meters on each side. What is the approximate density of the cube? 8000 kg/m3 11000 kg/m3 14000 kg/m3 19000 kg/m3 Question 13 A force of 16...
Three different processes act on a system. In process A, 53 J of work are done...
Three different processes act
on a system. In process A, 53 J of work are done on the system and
77 J of heat are added to the system. Find the change in the
system's internal energy. In process B, the system does 53 J of
work and 77 J of heat are added to the system. What is the change
in the system's internal energy? In process C, the system's
internal energy decreases by 125 J while the system...
Physics I. Unit : potential energy and conservation of energy. A,B,C, please In the figure, a...
Physics I. Unit : potential energy and conservation of energy.
A,B,C, please
In the figure, a 3.9 kg block is accelerated from rest by a compressed spring of spring constant 630 N/m. The block leaves the spring at the spring's relaxed length and travels over a horizontal floor with a coefficient of kinetic friction mu_k = 0.215. The frictional force stops the block in distance D = 7.7 m. What are (a) the increase in the thermal energy of the...
For a conservative system, at some point the kinetic energy is 4 J and the potential...
For a conservative system, at some point the kinetic energy is 4 J and the potential energy is 6 J. At another point if the kinetic energy becomes 8 J then potential energy would be (in Joule): Answer:
The figure is a graph of the gravitational potential energy and kinetic energy of a 70...
The figure is a graph of the gravitational potential energy and
kinetic energy of a 70 g yo-yo as it moves up and down on its
string. The acceleration of gravity is 9.81 m/s2 .
a) By what amount does the mechanical energy of the yo-yo change
after 6.0 s? Answer in units of J.
b) What is the speed of the yo-yo after 4.5 s? Answer in units of
m/s.
c) What is the maximum height of the yo-yo?...
A ball is thrown straight up into the air. At what position is its kinetic energy...
A ball is thrown straight up into the air. At what position is its kinetic energy a maximum? At what position is the gravitational potential energy of the ball-Earth system a maximum? Select the correct One: - At its maximum height the kinetic energy is maximum and the potential energy is minimal - In the middle of their trajectory both energies are maximum - At maximum height the kinetic energy is minimal and the potential energy is maximum - In...
How will you solve?
system's intemal energy by 354 J The internal energy of a system increases by 468 J, while losing 345 J of heat.How much egy transferred by work? heat is increased by 145 J, while it does 189 J of work, What is the change in the systems internal energy?
Question 10 An object has 12 J of kinetic energy, 7 J of gravitational potential energy, and 16 J of elastic potential energy. What is the total mechanical energy? 35 J 23 J 28 J 19 J Question 12 A cube-shaped object with a mass of 19.3 kg measures an equal length of 0.1 meters on each side. What is the approximate density of the cube? 8000 kg/m3 11000 kg/m3 14000 kg/m3 19000 kg/m3 Question 13 A force of 16...
Three different processes act
on a system. In process A, 53 J of work are done on the system and
77 J of heat are added to the system. Find the change in the
system's internal energy. In process B, the system does 53 J of
work and 77 J of heat are added to the system. What is the change
in the system's internal energy? In process C, the system's
internal energy decreases by 125 J while the system...
Physics I. Unit : potential energy and conservation of energy.
A,B,C, please
In the figure, a 3.9 kg block is accelerated from rest by a compressed spring of spring constant 630 N/m. The block leaves the spring at the spring's relaxed length and travels over a horizontal floor with a coefficient of kinetic friction mu_k = 0.215. The frictional force stops the block in distance D = 7.7 m. What are (a) the increase in the thermal energy of the...
For a conservative system, at some point the kinetic energy is 4 J and the potential energy is 6 J. At another point if the kinetic energy becomes 8 J then potential energy would be (in Joule): Answer:
The figure is a graph of the gravitational potential energy and
kinetic energy of a 70 g yo-yo as it moves up and down on its
string. The acceleration of gravity is 9.81 m/s2 .
a) By what amount does the mechanical energy of the yo-yo change
after 6.0 s? Answer in units of J.
b) What is the speed of the yo-yo after 4.5 s? Answer in units of
m/s.
c) What is the maximum height of the yo-yo?...
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