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A bag of cement of weight 325 N hangs from three wires as suggested in the figure below. Two of the wires make angles ?1 = 55.0° and ?2 = 24.0° with the horizontal. Assuming the system is in equilibrium, find the tensions in the wires.
A basketball player is standing on the floor 10.0 m from the basket. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, ? = 36.4°, with the horizontal from a height of h = 1.82 m.
A beam of photons that have a wavelength equal to 6.8pm is scattered by electrons initially at rest. What is the change in wavelength of the photons
An RLC series circuit has R = 935? , L = 18.0mH , and C = 250?F. If the circuit is connected to a 110V rms power source at the resonance frequency, what's the average power consumption
A simple circuit consists of a battery connected to a lightbulb. A current of 0.243 A runs for 64.5 min, What is the voltage of the battery
If unpolarized light of intensity l0 passes through an ideal polarizer, what is the intensity of the emering light
What potential difference is required to reduce the initial speed of the proton by a factor of 2, What potential difference is required to bring the proton to rest
q1. the wheel of the car has a radius of 0.340 m. the engine of the car applies a torque of 282 nbullm to this wheel
An 840 kg car needs to round a level curve with a radius of 23m.The driver wants to proceed at 56 kph. How much work does the friction force do on the car
A copper ion with a single electron (denoted Cu28+) is in an excited state with radius the same as that of the ground state of hydrogen. How much energy in eV is needed to ionize the ion from this excited state
A coil with an inductance of 1.8 H and a resistance of 6.7 ? is suddenly connected to a resistanceless battery with an ? = 80.0 V. What is the rate at which thermal energy is appearing
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.500m2. How much energy does this wave carry through the window
A water-skier is moving at a speed of 13.1 m/s. When she skis in the same direction as a traveling wave, Determine the wavelength of the wave
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