Part A

Determine the binding energy of radium-226 (22688Ra).

Express your answer using five significant figures and include the appropriate units.

Part B

Determine the binding energy of an alpha particle.

Express your answer using five significant figures and include the appropriate units.

a) An eagle is flying horizontally at 4.4 m/s with a fish in its claws. It accidentally drops the fish.

(i) How much time passes before the fish's speed triples?
___s

(ii) How much additional time would be required for the fish's speed to triple again?
___ s

b) A soccer player kicks the ball toward a goal that is 28.8 m in front of him. The ball leaves his foot at a speed of 19.7 m/s and an angle of 32.2° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The answer is not 19.7 m/s.)
____m/s

c) A dolphin leaps out of the water at an angle of 36° above the horizontal. The horizontal component of the dolphin's velocity is 9.0 m/s. Find the magnitude of the vertical component of the velocity.
_____m/s

One mole of an ideal monatomic gas is taken through the reversible cycle shown in the figure. Generic_PV_01.png Process B→C is an adiabatic expansion with PB=11.0 atm and VB=4.00×10-3 m3. The volume at State C is 9.00VB. Process A→B occurs at constant volume, and Process C→A occurs at constant pressure. What is the energy added to the gas as heat for the cycle? Incorrect. Tries 6/10 Previous Tries What is the energy leaving the gas as heat? Tries 0/10 What is the net work done by the gas? Tries 0/10 What is the efficiency of the cycle? (in percent-do not enter units) Incorrect. Tries 1/10 Previous Tries

Object A , which has been charged to + 14 nC , is at the origin. Object B , which has been charged to − 22 nC , is at (x,y)=(0.0cm,2.0cm) .

Part A

What is the magnitude of the electric force on object A ?

Express your answer using two significant figures.

Part B

What is the magnitude of the electric force on object B?

Part C

What is the direction of the electric force on object A?

Consider a solid ball of uniform charge density and net charge 2Q and radius r1 that is surrounded by a hollow sphere of charge –Q with radius r2. Give expressions for the electric field in the three regions: inside (r < r1) between (r1 < r < r2) and outside (r2 < r). Show your work.

An electric dipole is formed from ± 4.0 nC point charges spaced 3.0 mm apart. The dipole is centered at the origin, oriented along the y-axis.

1. What is the electric field strength at point (x,y) = ( 25 mm ,0 cm)?

2, What is the electric field strength at point (x,y) = ( 0 mm ,25 cm)?

In a Gauss's Law problem where we use a cylinder for the Gaussian surface, when we compute the surface we ignore the end caps of the cylinder and just use 2*pi*r*L as an answer. Explain why we drop out the geometry for the end caps.

Suppose a star the size of our Sun, but with mass 5.0 times as great, were rotating at a speed of 1.0 revolution every 18 days. If it were to undergo gravitational collapse to a neutron star of radius 14 km , losing three-quarters of its mass in the process, what would its rotation speed be? Assume also that the thrown- off mass carries off either

part a. no angular momentum

part b. its proportional share three-quarters of the initial angular momentum

1.) An electric motor can accelerate a Ferris wheel of moment of inertia I = 19500 kg·m2 from rest to 10.1 rev/min in 12.0 s. When the motor is turned off, friction causes the wheel to slow down from 10.1 to 8.1 rev/min in 10.0 s. (a) Determine the torque generated by the motor to bring the wheel to 10.1 rev/min. (b) Determine the power that would be needed to maintain this rotational speed. W

2.)A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.526 rev/s. A 59.4 kg person running tangential to the rim of the merry-go-round at 2.80 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim. (a) Does the kinetic energy of the system increase, decrease, or stay the same when the person jumps on the merry-go-round? decrease stay the same increase (b) Calculate the initial and final kinetic energies for this system. Ki = kJ Kf = kJ

Four particles are in a 2-D plane with masses, x- and y- positions, and x- and y- velocities as given in the table below:

1) What is the x position of the center of mass?

2)What is the y position of the center of mass?

3)What is the speed of the center of mass?

Briefly describe a measurement you can do using a compass to determine information on the direction and/or strength of the magnetic field passing through the wire in Oersted’s experiment. Include your prediction on how you expect the compass reading to vary as you change one parameter (e.g. distance or current through the wire).

Being critical of your measurement described in the previous question, what errors or complications could arise that would prevent you from obtaining conclusive results? Include a precaution or extra steps that could be undertaken to ensure conclusive results. (One optional choice here is how to deal with background signals produced by Earth’s magnetic field).

A singly charged 7Li ion has a mass of 1.16 10-26 kg. It is accelerated through a potential difference of 495 V and subsequently enters a uniform magnetic field of magnitude 0.366 T perpendicular to the ion's velocity. Find the radius of its path.

5. The _______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time. A. compression B. intensity C. amplitude D. frequency 6. If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particular particle of the medium is at the crest of one wave and at the trough of the other wave at the same time, what will happen to that particle? A. The particle will cause beats as a result of the wave combination. B. The particle will move halfway to the crest due to reinforcement. C. The particle will vibrate with double amplitude due to resonance. D. The particle will remain stationary due to interference. 7. When the temperature of the air is 25°C, the velocity of a sound wave traveling through the air is approximately A. 320 m/s. B. 332 m/s. C. 347 m/s. D. 357 m/s. 8. If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have A. a frequency higher than the original frequency. B. a pitch lower than the original pitch. C. an amplitude lower than the original amplitude. D. a period higher than the original period. 9. If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that A. seems to lack overtones. B. seems to come from behind the surface. C. has a higher intensity than the sound produced by the source. D. has a higher pitch than the sound produced by the source.