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A sphere with constant velocity passes through a photogate. Determine the speed of the sphere as it passes through the photogate. Assume the beam of the photogate is aligned such that the photogate
An explosion breaks an object initially at rest into two pieces, one of which has 2.8 times the mass of the other. If 8700 J were released in the explosion, how much kinetic energy did the heavier
Two capacitors, C1 = 22.0 µF and C2 = 40.0 µF, are connected in series, and a 15.0 V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this
A 8.60-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is sliding on a flat table. Taking the coefficient of kinetic friction
Two point charges of +2.0 oC and -6.0 oC are located on the x-axis at x = -1.0 cm and x = +2.0 cm respectively. Where should a third charge of +3.0 oC be placed on the + x-axis so that the potential a
If the battery is disconnected and the plates are pulled apart to a separation of 3 cm, what is the charge on each plate? What is the electric field between the plates now?
What additional distance Y does the platform drop when the spring is maximally compressed and the platform comes to a momentary rest?
The bullet, when fired, passes entirely through the block and emerges from the other side at 120 m/s. The block of wood, initially at rest, slides 0.45 m before stopping.Find an expression for the co
A charge of 23.8 µC is located at (4.32 m, 5.90 m), and a charge of -10.6 µC is located at (-4.43 m, 6.65 m). What charge must be located at (2.27 m, -3.05 m) if the electric potential i
Between the electrodes but not near their edges, the electric field strength is 1.6 × 10^6 N/C. What is the magnitude of the charge on each electrode?
Explain what causes the seasons that we experience in the temperate region of the Northern Hemisphere. Do you have fall and winter in the tropics? Would you have seasons in the Southern Hemisphere?
A 5.82-kg object passes through the origin at time t = 0 such that its x component of velocity is 5.30 m/s and its y component of velocity is -2.73 m/s. (a) What is the kinetic energy of the object
A charge Q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of length d. At a point P that is 1.25 cm outside the sheet, the magnitude of the elec
The electric field 10 cm away from an isolated point charge is E = 100 V/m. The electric field 20 cm away from this same charge is a. 25 V/m b. 200 V/m c. 100 V/m d. 400 V/m e. 50 V/m
If a ball is dropped from a cliff with an initial velocity of 25m/s, with a direction of 40 degrees out from the y axis and takes 3.75 seconds to hit the ground, find: a) height of the cliff b) how
You need to build an ammeter that can measure up to 0.5 A. You are given a galvanometer that reads 75 A at its full-scale deflection, and are told that this galvanometer has an internal resistance o
Suppose you wish to make a solenoid whose self-inductance is 1.5 mH. The inductor is to have a cross-sectional area of 1.6 x 10-3 m2 and a length of 0.073 m. How many turns of wire are needed? Please
What is the quantity corresponding to the area under the curve (the induced voltage multiplied by its respective time interval)? Hint: rearrange the equation representing Faraday's law.
A neon sign uses a step up transformer with a turns ratio of 50. the sign is plugged into a standard wall outlet at 120V. what voltage gets supplied to the sign?
A particular satellite was placed in a circular orbit about 145 mi above Earth. (a) Determine the orbital speed of the satellite. (b) Determine the time required for one complete revolution.
A sample of blood is placed in a centrifuge of radius 12.0 cm. The mass of a red blood cell is 3.0 10?16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 x 10-1
A certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 34.0 m/s. With what maximum speed can it go around a curve having a radius of 65.0 m?
Light rays in a material with index of refrection 1.25 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find this material
The core of an optical fiber has an index of refraction of 1.29, while the index of refraction of the cladding surrounding the core is 1.19. What is the critical angle for total internal reflection