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Im having trouble with a physics question: Phase angle is the difference between the current i(t) and the voltage v(t) of the sine wave source. In the experiment you actually measure the phase angle between vR (t) and v (t) rather than i(t) and v(t), why?
And also, how can I tell if the voltage from a signal generator leads or lags a current?
The period of a pendulum is 0.215 s on Earth. The period of the same pendulum is found to be 0.467 s on planet X, whose mass is equal to that of Earth.
what is the rate of heat loss through a glass window 3.0 mm thick if the outside temperature is -20o c and the inside
An acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 470 Hz. If these harmonics are described, in order, by cosine waves by amplitudes of 0.710, 0.170, and 0.790, what is the total amplitude of the signal at ..
a flight attendant pulls her 60 n flight bag a distance of 358 m along a level airport floor at a constant velocity.
A charge +Q is distributed evenly on a wire bent into an arc of radius R. What is the direction of the electric field
An object with mass 3.8{\rm kg} is attached to a spring with spring stiffness constant 220{\rm N/m} and is executing simple harmonic motion. When the object is 2.1×10?2{\rm m} from its equilibrium position, it is moving with a speed of 0.55 {\rm m..
A large capacitance of 1.20 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
A 130-g bullet is fired from a rifle having a barrel 0.654 m long. Choose the origin to be at the location where the bullet begins to move. Determine the work done by the gas on the bullet as the bullet travels the length of the barrel
A 6100 kg rocket is set for vertical firing from the Earth's surface. The exhaust speed is 1400 m/s. How much gas must be ejected each second if the thrust is to equal the weight of the rocket
When in deep space, the block accelerates at 4.2 m/s^2 even as a 120 N force is applied to it. The coefficient of static friction for a particular plane and this block is 0.31. What angle can this plane make with horizontal before the object starts t..
The polarizability of large atoms can be estimated by using the formula for the polarizability of a metal sphere, \(\alpha = 4\pi\epsilon a^{3}\), Estimate the induced dipole moment of an oxygen atom
A 2kg box is released, from rest, at the top of a rough circular track of radius 10cm. calculate the work done by all resistive forces
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