A newspaper delivery boy is riding his bicycle down the street at 5.1m/s . He can throw a paper at a speed of 8.3m/s. What is the paper's speed relative to the ground if he throws the paper forward?

A long, thin solenoid has 870 turns per meter and radius 3.00cm . The current in the solenoid is increasing at a uniform rate of 65.0A/s .

A)What is the magnitude of the induced electric field at a point 0.550cm from the axis of the solenoid?

B)What is the magnitude of the induced electric field at a point 1.00cm from the axis of the solenoid?

The rear window in a car is approximately a rectangle, 2.4 m wide and 0.65 m high. The inside rearview mirror is 0.40 m from the driver's eyes, and 2.10 m from the rear window. What is the minimum length for the rearview mirror if the driver is to be able to see the entire width and height of the rear window in the mirror without moving her head? What is the minimum height for the rearview mirror if the driver is to be able to see the entire width and height of the rear window in the mirror without moving her head?

A 1500-N uniform boom at ? = 68.0

Alice is driving a race car around an essentially circular track.  Brian, who is sitting at a fixed position at the edge of the track, measures the time that Alice takes to complete a lap by starting his watch when Alice passes by his position (call this event E) and stopping it when Alice passes his positin again (call this event F).  This situation is also observed by Cara and Dave, who are passengers in a train that passes very close to Brian.  Cara happens to be passing Brian just as Alice passes Brian for the first time, and Dave happens to pass Brian just as Alice passes Brian the second time.  Assume that the clocks used by Alice, Brian, and Cara are close enough together so that we can consider them all to be "present" at event E, and similarily that those used by Alice, Brian, and Dave are "present" at event F.  Assume that the ground frame is an inertial reference frame.

Who measures:

a) the proper time,

b) the coordinate time,

c) and the spacetime interval between events E and F?

Explain why.

A heat engine operates between a high-temperature reservoir at 610 K and a low-temperature reservoir at 320 K. In one cycle, the engine absorbs 6800 J of heat from the high-temperature reservoir and does 2200 J of work.

A) What is the net change in entropy as a result of this cycle?

Brief timeline of the development of the theory and or technology and key players of the physics of Particle and Wave detection

Should the maximum angular velocity of the shank coincide with ball contact? Explain why or why not.

Discuss examples of when a naturalistic observational study would be the most appropriate design to select.

Two 2.1-mm-diameter beads, C and D, are 10 mm apart, measured between their centers. Bead C has mass 1.0 g and charge 1.6 nC. Bead D has mass 2.3 g and charge -1.0 nC.

1) If the beads are released from rest, what is the speed v_C of C at the instant the beads collide?

2) What is the speed v_D of D at the instant the beads collide?

Una masa conectada a un resorte ejecuta MAS. Cuando la masa está en su desplazamiento máximo desde la posición de equilibrio, su velocidad instantánea

a)Es máxima.

b)Es menor que máxima, pero no cero.

c)Es cero.

d)No puede determinarse sin la información de la masa.

e)No puede determinarse sin la información de la constante del resorte.

If you had your choice, would you prefer to purchase a Defined Contribution Pension Plan or a Defined Benefit Pension Plan? Is one better than the other? Explain your answer

A gas is confined to a cylindrical volume with a movable piston on one end. Initiall, the volume of the container is 0.160 m^3, and the gas is at 315 K. The gas is heated, but the piston is moved such that the temperature of the gas remains constant.

If there are 1.60 moles of gas in the container, write an equation for the pressure of the gas as a function of the volume of the container. (Assume SI units, and do not include units in your answer. Use the variable, V, as necessary.)

You bend a rod made of three equally-sized nonconducting segments (total length πR) into a semicircular arc. The outer two segments carry uniformly distributed charges of −q and the center segment is electrically neutral. Find the electric field at the center of the arc