You drag your 30 kg suitcase 1200 m thru the Chicago airport at essentially constant velocity 2.0 m/s, by pulling its handle 90 N mostly upward, but 20° Westward. how much Action did you make the suitcase do?
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A:
Q: what speed ? will he be going after 35.0 m ?
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A: Solution
You drag your 30 kg suitcase 1200 m thru the Chicago airport at essentially constant velocity 2.0 m/s, by pulling its handle 90 N mostly upward, but 20° Westward. how much Action did you make the suitcase do?
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- One model for the potential energy of a two-atom molecule, where the atoms are separated by a distance r, is U(r) = U0 [(r0 / r)16 - (r0 / r)9] where r0 = 0.70 nm and U0 = 7.0 eV. Note: 1 eV = 1.6*10-19 J. You can use SI units, but CAPA will also accept these units that will simplify your calculations: [Force] = eV/nm[Energy] = eV[distance] = nm r_eq = 7.6 *10^-1 nm If the distance between the atoms increases from equilibrium by r1 = 0.20 nm, then what is the force from one atom on the other associated with this potential energy? (Enter your answer as postive if they repel each other, and negative if they attract). F_r (r_eq +r_1) = ? The atoms are oscillating back and forth. The maximum separation of the atoms is r2 = 2.2 nm. What is the kinetic energy of the atoms when they are separated by the equilibrium distance? K(r_eq) = ?Given two charges: q1=–60nC and q2=+40nC are separated by 100 mm in an environment of relative permittivity of 1.38. Which is the electric potential energy of this system? choices: a. -156.31x10^{-6\ }J b. +1.563x10^{-3\ }J c. 156.31x10^{-6\ }J d. 156.31x10The value of E at P(ρ = 2, ∅ = 40°, z = 3) is given as E = 100aρ − 200a∅ + 200az V/m. Determine the incremental work required to move a 20 − μC charge a distance of 6 μm in the direction of: A. aρB. a∅C. azD. EE. G = 2ax − 3ay + 4az Round off the solutions to the nearest thousandths and round off the final answers to the nearest hundredths.
- Given 150 kWh of electricity and assuming 30% losses, how much work, in joules could be done? a) 3.8 x 10^8 b) 3.78 x 10^8 c) 3.8 x 10^6 d) 0Three equal point particles, each with particle 1.30 μC , are placed at the vertices of an equilateral triangle whose sides are of length 0.600 m. What is the electric potential energy U of the system? (Take as zero the potential energy of the three particles when they are infinitely far apart.) Use ϵ0 = 8.85×10−12 C2/(N⋅m2) for the permittivity of free space.Verify the energy unit equivalence that 1 kW . h = 3.60 X 106 J.
- Four identical electrical charges q1, q2, q3, q4 with a value of 6.5nC are located at the vertices of a square with side L=1.6m. The electric potential energy of the system, measured in nJ, is:The surface charge load σ = 1.2 nC/m^2 is 12 from a uniformly loaded disk of 5 cm in diameter. You can calculate an electrical potential for each month. A) 0.231 V B) 0.467 V C) 0.538 V D) 0.325 V E) 0.678 VA charge of 56.0 nC is placed in a uniform electric field that is directed vertically upward and that has a magnitude of 8.00 x 104 N/C. What work is done by the electric force when the charge moves 5.20m at the angle 45 degrees downward from the horizontal?
- A particle of mass 1 × 10−5 kg and charge 1 µC moves downward from point A to point B a distance of 2 m in the earth’s gravitational field. The kinetic energy of the particle decreases by 1.7 mJ during this movement. What is the potential difference VB − VA? The acceleration of gravity is 9.8 m/s 2 . Answer in units of kV.Two electric charges q1=2.0μCq1=2.0μC and q2=4.0μCq2=4.0μC are located 0.50m apart. How much work is needed to move the two charges apart and double the distance between them? Select one: a. 0.14 J b. 0.0 J c. −7.2×10−2J−7.2×10−2J d. 7.2×10−2J7.2×10−2J e. -0.14 JA charged particle is placed in a uniform electric field to the left. In addition to the electrical force, another force acts on the particle. When the particle is released it moves in the opposite direction of the electric field and after 8.00 cm the work done by the additional force is 6.50x10-5 J and the kinetic energy of the particle is 4.35x10-5 J. Since the particle has a charge of +7.6 nC. a) Find the work done by the electric force. b) Find the potential of the first point with respect to the last point. c) Find the magnitude of the electric field.
