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Consider a series LRC circuit with R=21 ?, L=0.29 H and C=0.4 µF. The current is 14 mA amplitude at 1.6 kHz. Remember ? = 2?f, where f is the frequency in cycles per second or Hz. Find the angular resonant frequency of oscillations. Express the answer with one decimal place.
A standard 100 (120 ) lightbulb contains a 7.80 -long tungsten filament. The high-temperature resistivity of tungsten is. what is the resistance of a household
A crate of weight W is being pushed across a horizontal surface by a force directed at an angle of 20 degrees below the horizontal. find the magnitude of the normal force on the crate
A mass of 180g is held by a horizontal spring of constant 22 N/m. It is displaced from its equilibrium position and released from rest. What is the magnitude of initial displacement
A cyclist uses 27,000 joules per minute (this is about 385 food Calories per hour) to cycle at a constant pedaling rate of 450 radians per minute along a flat road using a gear ratio of 4
Three balls (m= 0.450 kg) are placed at evenly spaced intervals on a 0.75 m rod (m= .250 kg). Find the moment of inertia of the entire system
Suppose a monochromic light strikes a grating at normal incidence. what is the frequency of the light that passes through
A hydrogen atom has an angular momentum of 1.055x10^-34 kg.m^2/s. According to the Bohr model, what is the energy (eV) associated with this state
A 40 g rifle bullet travelling 260 m/s buries itself in a 4.0 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of pendulum's displacement.
When four people with a combined mass of 300 kg sit down in a 2.0 103-kg car, they find that their weight compresses the springs an additional 0.65 cm. What is the frequency of the car's vibration
A potential difference V is applied to a wire of cross section A, length L, and resistivity ?. You want to change the applied potential difference, What should be the new values of L and A in terms of the old values
You have a mass of 87 kg and are on a 50-degree slope hanging on to a cord with a breaking strength of 221 newtons. Illustrate what must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved fro..
A flight attendant pulls her 70 N flight bag a distance of 247 m along a level airport floor at a constant speed. The force she exerts is 33.00 N at an angle of 52° above the horizontal.
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