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Two capacitors are connected in parallel across the terminals of a battery. One has a capacitance of 2.0 µF, What is the voltage of the battery
The coil of a galvanometer has a resistance of 19.8 ?, and its meter deflects full scale when a current of 6.30 mA passes through it. What is the maximum current that this ammeter can read
A 0.300 kg ball is thrown vertically upward with an initial speed of 16.0m/s. What is the maximum height reached by the ball
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 49-m-diameter loop-the-loop
A 1600kg car takes a 50-m-radius unbanked curve at 17m/s, What is the size of the friction force on the car
A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(596.6 Hz)t].Determine the resistance of the bulb's filame
A surveyor is using a magnetic compass 5.8 m below a power line in which there is a steady current of 88 A. What is the magnetic field at the site of the compass due to the power line
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension
The rms current in a copy machine is 7.50 A, and the resistance of the machine is 14.4 ?. What is the peak power delivered to the machine?
A cooling fan is turned off when it is running at 800rev/min . It turns 900 revolutions before it comes to a stop, What was the fan's angular acceleration, assumed constant
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the vacu
the cube of insulating material has the one corner at the origen . each side of the cube has length 0.250m so the top face of the cube is parallel to the xz-plane and is at y=.250m, calculated the n
The indices of refraction for violet light (? = 400 nm) and red light (? = 700 nm) in diamond are 2.46 and 2.41, Calculate the angular separation between these two colors of light in the refracted ray
A beam of 2-MeV neutrons is incident on a slab of heavy water (D2O). The total cross-sections of deuterium and oxygen are 2.6b and 1.6b respectively.what is the macroscopic total cross section of D2
A highway curve of radius 560m is designed for traffic moving at a speed of 94.0km/hr. What is the correct banking angle of the road
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A golf club 1.01 m long completes a downswing in .25 s through a range of 180 degrees. What is the tangential acceleration of the end of the club?
In an L-R-C series circuit, the rms voltage across the resistor is 31.7V , across the capacitor it is 89.2V, What is the rms voltage of the source
three capacitor , with capacitance of c1=4.0mf,c2=3.0mf ,c3=2.0mf , are connected to a 24v source (c1 is in series with c2 but c2 and c3 are in parallel, what is the equivalent capacitance of the th
20g of Uranium Carbide (UC) of density 13.6 g/cm^3 is mixed with 15g of uranium dioxide of density 11.2 g/cm^3, Determine the atom densities of U-235 and U-238 in the fuel mixture
We pass a laser beam through a double slit. On a screen 18.52 m away, we observe a series of bright lines which are 3.4 mm apart. What is the distance between the two slits
a spherical drop of water carrying a charge of 90pc has a potential of 270 v at its surface, what is the potential in the new drop
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
A 878 kg car has four 11.8 kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to rotation of the wheels about their axles
A point is located at r = 42mmi - 71mmj + 90mmk. It is first rotated about the x-axis by +82o, and then rotated about the z-axis by -35o