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The sheet is immersed in a uniform electric field of magnitude 72.2N/C that is directed at 20 ^\circ from the plane of the sheet (the Find the magnitude of the electric flux through the sheet. Expre
When the resistors are connected in parallel to the battery, the total current from the battery is 11.6 A. Determine the two resistances.
Two vectors, and lie in the xy plane. Their magnitudes are 3.54 and 7.08 units, respectively, and their directions are 305o and 55o, respectively, as measured counterclockwise from the positive x ax
If the initial velocity of the particle is given by vy = 2.5 × 105 m/s, vx = vz = 0, what is the speed of the particle at 0.6 s? Answer in units of m/s.
What is the magnitude of the acceleration of the ball just before it strikes the ground? What was the initial speed of the ball? What initial speed must the ball have if it is to land with a speed o
A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 29.0° and the angle of refraction is 18.2°, find the critical angle for the liquid when surround
Assuming that the solar wind travels at 550 km/s and the rotation rate of the sun is 27 days. Calculate the distance from the sun at which an interplanetary magnetic field line will wrap around itse
(a) Calculate the magnitude of the electric field at a point 1.3 cm away from the center of the sphere. (b) Calculate the magnitude of the electric field at a point 3.1 cm away from the center of th
The rms current in a copy machine is 7.27 A, and the resistance of the machine is 16.6?. What are (a) the average power and (b) the peak power delivered to the machine?
Two point charges lie on the x-axis. A charge of +9.4 µC is at the origin, and a charge of -4.4 µC is at x = 10.0 cm. (a) At what position x would a third charge q3 be in equilibrium? Th
A gas cylinder holds 0.100g of at 180 degrees cand a pressure of 3.50atm. The gas expands adiabatically until the volume is doubled. What is the final pessure.
As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 88.7 Hz. At what speed are you driving?
A flat circle of radius 20 is placed in a uniform electric field of magnitude 6.5×102. What is the electric flux through the circle when its face is at 60 degrees to the field lines?
Calculate the vertical component of the baseball's velocity at each of the two times you found in part A? What is the magnitude of the baseball's velocity when it returns to the level at which it le
A 50dB sound wave strikes an eardrum whose area is 5.6 x 10-5 m2. How much energy is absorbed by the eardrum per second? Take the threshold of hearing to be Io = 10-12 W/ m2 and give your answer in pi
A piano string having a mass per unit length equal to 4.80 10-3 kg/m is under a tension of 1,400 N. Find the speed with which a wave travels on this string.
What should his speed have been at the top of the ramp to have just made it to the edge of the far bank?
Oxygen has a molar mass of 32.0. The root mean square of an oxygen molecule at 294K= 479 m/s. What is its average translational kinetic energy at that speed?
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed vfinal of the electron when it is 10.0cm from
The total electric flux from a cubical box 3.00cm on a side is 1.40×103N\cdot m^2/C. What charge is enclosed by the box?
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, and the latent heat of fusion of water is 3.35 x 105 J/kg.
A golf ball rolls off a horizontal cliff with an initial speed of 11.4 m/s. The ball falls a vertical distance of 15.5 m into a lake below. (a) How much time does the ball spend in the air?
What is the maximum thickness of ice above this area that the defroster can melt in 3.2 minutes?