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U n Reght above the ground. 11) At which point does the...
You drop a 2.50 kg textbook to a friend who stands on the ground at distance...
You drop a 2.50 kg textbook to a friend who stands on the ground
at distance D = 10.0 m below. Your friend's outstretched hands are
at distance d = 1.50 m above the ground.
(a) How much work Wg does the gravitational force do on the book
as it drops to her hands?
(b) What is the change ΝU in the gravitational potential energy
of the textbook-Earth system during the drop?
(c) If the gravitational potential energy of that...
You drop a 2.50 kg textbook to a friend who stands on the ground at distance...
You drop a 2.50 kg textbook to a friend who stands on the ground
at distance D = 10.0 m below. Your friend's outstretched hands are
at distance d = 1.50 m above the ground.
(a) How much work Wg does the gravitational force do on the book
as it drops to her hands?
(b) What is the change ΝU in the gravitational potential energy
of the textbook-Earth system during the drop?
(c) If the gravitational potential energy of that...
Consider the diagram representing a portion of an amusement park ride. Y axis is the height...
Consider the diagram representing a portion of an amusement park ride. Y axis is the height above ground in meters. A 100 kg car has 30.000 J of potential energy at point A. It moves down a frictionless track and comes to a stop as it compress a huge spring at point D. On the diagram below, sketch the energy bar graphs when the car is at the indicated points. How much kinetic energy does the car have at point...
10. Assuming the skater is release from rest at point A which is 6.00 m above...
10. Assuming the skater is release from rest at point A which is 6.00 m above the ground, use the conservation of mechanical energy calculate the speed the of the skater at B, C, and D. (Show all work) 200 After you have completed the track, right click the track and put the simulation in roller coaster mode. Then use the Energy vs Time graph, like the graph above for the 75.0 kg skater, to estimate the following: 1. Kinetic...
Conservation of energy In the examples you have examined in this lab, as the coaster travels...
Conservation of energy In the examples you have examined in this lab, as the coaster travels down the track its gravitational potential energy decreases, and its kinetic energy increases. At any point along the path of the coaster, the potential energy plus the kinetic energy add up to the same value. In the absence of friction and air resistance, we find that the total energy (kinetic plus potential) stays the same. For this reason, physicists call the total energy a...
You drop a 1.10 kg book to a friend who stands on the ground at distance...
You drop a 1.10 kg book to a friend who stands on the ground at distance D = 14.0 m below. If your friend's outstretched hands are at distance d = 1.30 m above the ground (see the figure), (a) how much work Wg does the gravitational force do on the book as it drops to her hands? (b) What is the change ΔU in the gravitational potential energy of the book-Earth system during the drop? If the gravitational potential...
4. A mass of 2 kg is held 4 meters above the ground. The gravitational potential...
4. A mass of 2 kg is held 4 meters above the ground. The gravitational potential energy of this object, relative to the ground, is ___. 5. Which is easier, stopping a 1000 kg car traveling at 40 m / s or a 2000 kg car traveling at 20 m / s? 8. Suppose an airplane fires bullets in the same direction it travels. Does the momentum of the plane increase, decrease or remain the same? Explain
3. A 4kg weight is held 6m above the ground. (a) How much potential energy does...
3. A 4kg weight is held 6m above the ground. (a) How much potential energy does the 4kg weight have at the height of 6m? answer (b) If the weight was dropped, how much kinetic energy would it have just as it hits the ground? answer (c) How fast would the weight be moving at a height of 3m? answer (d) How fast would the weight be moving as it hits the ground? answer
Use conservation of energy please!! An electron is initially at ground level, and the electric potential...
Use conservation of energy
please!!
An electron is initially at ground level, and the electric potential at that point is assumed to be exactly zero. The electron is immersed in a uniform electric field that points down with a magnitude of 4.4 x 10-11 N/C as well as Earth's gravitational field (9.8 N/kg, pointing down). Only gravity and the electric force have any effect in this problem. a) If the electron is given an initial upward velocity of 36 m/s,...
A car of mass 500. kg on a roller coaster ride is raised from the ground...
A car of mass 500. kg on a roller coaster ride is raised from
the ground (horizontal dotted line) to point A as shown in the
diagram above. When the car passes point A, its speed is 5.0 m/s,
and then it rolls freely through the rest of the ride with
negligible friction, passing points B, C, D and E. Note that point
D is the highest portion of a circular loop, and point E is the
lowest portion of...
You drop a 2.50 kg textbook to a friend who stands on the ground
at distance D = 10.0 m below. Your friend's outstretched hands are
at distance d = 1.50 m above the ground.
(a) How much work Wg does the gravitational force do on the book
as it drops to her hands?
(b) What is the change ΝU in the gravitational potential energy
of the textbook-Earth system during the drop?
(c) If the gravitational potential energy of that...
You drop a 2.50 kg textbook to a friend who stands on the ground
at distance D = 10.0 m below. Your friend's outstretched hands are
at distance d = 1.50 m above the ground.
(a) How much work Wg does the gravitational force do on the book
as it drops to her hands?
(b) What is the change ΝU in the gravitational potential energy
of the textbook-Earth system during the drop?
(c) If the gravitational potential energy of that...
Consider the diagram representing a portion of an amusement park ride. Y axis is the height above ground in meters. A 100 kg car has 30.000 J of potential energy at point A. It moves down a frictionless track and comes to a stop as it compress a huge spring at point D. On the diagram below, sketch the energy bar graphs when the car is at the indicated points. How much kinetic energy does the car have at point...
10. Assuming the skater is release from rest at point A which is 6.00 m above the ground, use the conservation of mechanical energy calculate the speed the of the skater at B, C, and D. (Show all work) 200 After you have completed the track, right click the track and put the simulation in roller coaster mode. Then use the Energy vs Time graph, like the graph above for the 75.0 kg skater, to estimate the following: 1. Kinetic...
Conservation of energy In the examples you have examined in this lab, as the coaster travels down the track its gravitational potential energy decreases, and its kinetic energy increases. At any point along the path of the coaster, the potential energy plus the kinetic energy add up to the same value. In the absence of friction and air resistance, we find that the total energy (kinetic plus potential) stays the same. For this reason, physicists call the total energy a...
Use conservation of energy
please!!
An electron is initially at ground level, and the electric potential at that point is assumed to be exactly zero. The electron is immersed in a uniform electric field that points down with a magnitude of 4.4 x 10-11 N/C as well as Earth's gravitational field (9.8 N/kg, pointing down). Only gravity and the electric force have any effect in this problem. a) If the electron is given an initial upward velocity of 36 m/s,...
A car of mass 500. kg on a roller coaster ride is raised from
the ground (horizontal dotted line) to point A as shown in the
diagram above. When the car passes point A, its speed is 5.0 m/s,
and then it rolls freely through the rest of the ride with
negligible friction, passing points B, C, D and E. Note that point
D is the highest portion of a circular loop, and point E is the
lowest portion of...
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