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A 5.29-kg ball hangs from the top of a vertical pole by a 2.09-m-long string. Calculate the angle, between 0° and 90°, that the string makes with the pole
A 3.53kOhm resistor is connected to a generator with a maximum voltage of 121V. Find the average power delivered to this circuit
The magnetic field in an electromagnetic wave has a peak value given by B = 3.3uT. Find the peak intensity. Find average intensity
A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the water on the propeller, What is the acceleration of the 1400 kg boat
A hockey player got checked into the boards and was knocked unconscious. It takes 95N of force to drag the hockey player across the ice at a constant speed.
A power plant burns coal and generates an average of 600.0 MW of electrical power, Find the total electrical energy generated by the plant in a 30-day period
a thin rod of length 10.3m and mass 20kg is supported at a 30 degree incline. one support is 2.4m and the other is 8.3m from the lower end of the rod, Find the normal force exerted on the rod by the
Suppose a particle with mass m release from rest in a uniform gravity g. Suppose the drag force is proportional to speed square, find an expression that gives the relationship between velocity and tim
An electric power station is producing 1.60 × 103 W of power that is to be sent to a small town located 11 km away, Find the power lost in heating the wires if the voltage is stepped up from 130
Three successive resonance frequencies of an air column are 75, 125, and 175 Hz, What is the fundamental (lowest) frequency
A standing wave on a 0.8 m string is described by the relation y = 0.02 sin 5nx cos 100 nt Si units, What are the amplitude, frequency, and wavelength
Write an equation for a wave with a frequency of 2Hz, a wavelength of 30 m, and an amplitude of 75 cm
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
Consider the following vector fields: C=2x(x-direction), D=5x(y-direction), F=4s(phi-direction), G=3s(s-direction), For each field which could be magnetic, calculate the current density at the origin
A 0.150kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.710m/s, Find the magnitude of the final velocity of the 0.150 kg glider
At the intersection of Texas Avenue and University Drive, a yellow, subcompact car with mass 800kgtraveling east on University collides with a maroon pickup truck with mass 1850kg, Calculate the spe
Block Ahas mass 1.00 kg, and block B has mass 3.00 kg. The blocks are forced together, compressing a spring S between them, What is the final speed of block A
What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.5V when the starter motor draws 77A
The small currents in axons corresponding to nerve impulses produce measurable magnetic fields. What is the strength of the field at a distance of 1.2mm
A 170? resistor, a 9.00×10?2?F capacitor, and a 350mH inductor are connected in series to a voltage source with amplitude 240V, What is the resonance angular frequency
In a series R-L-C circuit, R = 280? , XC = 240?and XL = 600? . The average power consumed in the resistor is 60.0W, What is the power factor of the circuit
A baggage cart full of luggage is coasting at a speed vA across the airport taxiway. When forty-one percent of the mass of the cart and luggage is thrown off the cart, Calculate the ratio vB/vA
A circular coil with a radius of 20 cm and containing 60 turns is placed in a uniform magnetic field which makes an angle of 30 degrees with respect to the plane of the coil, find the magnitude and
A ray of light traveling in air is incident on the flat surface of a piece of glass at an angle of 66.5° with respect to the normal to the surface of the glass, what is the refractive index of t