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Fluids: Pressure, Buoyancy, Archimedes, Bernoulli | PHYS 1500
October 29, 2015
1 = 0 + ; pressure at depth h below
Part I: Pressure
1. What is the pressure in water (densi
chaney (glc568) Work, Energy, Impulse, and Momentum murthy (21118) This print-out should have 49 questions. Multiple-choice questions may continue on the next column or page nd all choices before
chaney (glc568) Impulse, Momentum, Angular Motion murthy (21118) This print-out should have 49 questions. Multiple-choice questions may continue on the next column or page nd all choices before an
Homework #11 Solutions Chapter 32
32.11. Model: The magnetic field is that of a current loop.
Solve: (a) From Equation 32.7, the magnetic field strength at the center of a loop is
2RBloop center 2(0.5
Homework #13 Solutions Chapter 33
33.1. Visualize:
To develop a motional emf the magnetic field needs to be perpendicular to both the velocity and the current, so
lets say its direction is into the pa
Homework #12 Solutions Chapter 32
32.13. Model: Assume the wires are infinitely long.
Visualize:
The field vectors are tangent to circles around the currents. The net magnetic field is the vectorial s
Homework #9 Solutions Chapter 31
31.3. Model: Assume that the connecting wires are ideal.
Visualize: Please refer to Figure EX31.3.
Solve: The current in the 2 resistor is I1 = 4 V/2 = 2 A to the righ
Homework #14 Solutions Chapter 33
33.14. Model: Assume the field is uniform across the loop.
Visualize: Please refer to Figure EX33.14. There is a current in the loop so there must be an emf that is d
Homework #3 Solutions Chapter 25
25.1. Model: Use the charge model.
Solve: (a) In the process of charging by rubbing, electrons are removed from one material and transferred into the
other because the
Homework #5 Solutions Chapter 25
25.23. Model: The electric field is that of a negative charge on the plastic bead. Model the bead as a point
charge (which is exact for r > rbead ).
Solve: The electri
Homework #10 Solutions Chapter 31
31.23. Model: The connecting wires are ideal with zero resistance.
Solve:
For the first step, the two resistors in the middle of the circuit are in parallel, so their
Homework #2 Solutions Chapter 21
21.7. Model: Reflections at both ends of the string cause the formation of a standing wave.
Solve: Figure EX21.7 indicates 5/2 wavelengths on the 2.0-m-long string. Th
Homework #4 Solutions Chapter 25
25.33. Model: The charges are point charges.
Visualize: Please refer to Figure P25.33.
!
!
Solve: The electric force on charge q1 is the vector sum of the forces F2 on
Homework #6 Solutions Chapter 26
26.3. Model: The electric field is that due to superposition of the fields of the two 3.0 nC charges located on the yaxis.
Visualize: We denote the top 3.0 nC charge b
Homework #8 Solutions Chapter 28
28.37. Model: Energy is conserved. The charged spheres are point charges.
Visualize: Label the spheres 1, 2, 3, and 4 in a clockwise manner, with the sphere in the upp
Homework #7 Solutions Chapter 28
28.7. Model: The charges are point charges.
Solve: For a system of point charges, the potential energy is the sum of the potential energies due to all distinct
pairs o
Homework Solutions Chapter 3
3.5. Visualize: The position vector r whose magnitude r is 10 m has an x-component of 8 m. It makes an
angle with the +x-axis in the first quadrant.
Solve: Using trigonome
chaney (glc568) Rotations and Gravity murthy (21118) This print-out should have 47 questions. Multiple-choice questions may continue on the next column or page nd all choices before answering. 001
chaney (glc568) Gravitational PE, Torque and Angular Momentum murthy (21118) This print-out should have 37 questions. Multiple-choice questions may continue on the next column or page nd all choic
Homework 3 Solutions
Chapter 2
2.15. Model: We are using the particle model for the skater and the kinematics model of motion under
constant acceleration.
Solve: Since we dont know the time of acceler
Homework 2 Solutions
Chapter 2
2.23. Solve: x = (2t 2 t + 1) m
(a) The position t = 2 s is x2 s = [2(2)2 2 + 1] m = 7 m.
(b) The velocity is the derivative v = dx/dt and the velocity at t = 2 s is cal
Homework 4 Solutions
Chapter 2
2.43. Model: The car is a particle and constant-acceleration kinematic equations hold.
Visualize:
Solve: (a) This is a two-part problem. During the reaction time,
x1 = x
Homework Solutions Chapter 1
1.7.
Solve: The player starts with an initial velocity but as he slides he moves slower and slower until coming to
rest.
1.13.
Model: Represent the (child + sled) system a
Homework #9 Solutions Chapter 6
6.11. Model: We assume that the box is a point particle that is acted on only by the tension in the rope and the
pull of gravity. Both the forces act along the same ver
Homework #10 Solutions Chapter 7
7.5. Visualize: Please refer to Figure EX7.5.
Solve: (a) Gravity acts on both blocks. Block A is in contact with the floor and experiences a normal force and
friction.
Homework 8 Solutions Chapter 6
6.3. Model: We assume the speaker is a particle in static equilibrium under the influence of three forces: gravity
and the tensions in the two cables.
Visualize:
Solve:
Homework 7 Solutions Chapter 5
5.9. Visualize: Please refer to Figure EX5.9.
Solve: Newtons second law is F = ma. Applying this to curves 1 at the point F = 3 rubber bands and to curve 2
at the point
Homework Solutions Chapter 4
4.7. Model: Model the rocket as a particle and assume constant acceleration in both directions (vertical and
horizontal) so use the kinematic equations in direction.
Visua
chaney (glc568) Torque, Angular Momentum, and Rotational Equilibrium murthy (21118) 1 This print-out should have 51 questions. Multiple-choice questions may continue on the next column or page nd