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An egg which is initially at rest is dropped on a hard surface and breaks. We wait that any temperature change equilibrates. Take the egg as system. (a) What is the sign of W? (b) What is the sign of ?Epot? (c) What is ?Ekin (just before and just after impact)? (d) What is ?Utot? (e) What is the sign of Q?
Other Requirements: An egg which is initially at rest is dropped on a hard surface and breaks. We wait that any temperature change equilibrates. Take the egg as system. (a) What is the sign of W? (b) What is the sign of ?Epot? (c) What is ?Ekin (just before and just after impact)? (d) What is ?Utot? (e) What is the sign of Q?
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
a golf ball rolls off a horizontal cliff with an initial speed of 13.9 ms. the ball falls a vertical distance of 15.0 m
Assume that at a point x the wind from the surface to z= 1 kmis westerly at 10 m/s, What is the vertical velocity at a height of1 km
how does the acceleration curve compare to the force curve? what differences are there? from looking at a graph what
A thin film of MgF2(n=1.38) is deposited on glass thus that it is anti reflecting at a wavelength of 580 nanometer under normal incidence. Find what wavelength is minimally reflected
Two equal point charges repel each other with a force of 5.25 N. If they are separated by 4.0 cm, what is the magnitude of each charge
An electron that has velocity = (3.1 106 m/s) + (2.3 106 m/s) moves through a magnetic field = (0.03 T) - (0.15 T) . (a) Find the force on the electron. N (b) Repeat your calculation for a proton having the same velocity. N
air traffic controllers usually describe the position of an aircraft relative to the airport by altitude, What are the x, y, and z components (in meters) of hte position vector
A device used in radiation therapy for cancer contains 6.20×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
The trap-jaw ant can snap its mandibles shut in as little as 1.6x10-4 s. In order to shut, both mandibles rotate through a 87° angle. What is the average angular velocity of one of the mandibles of the trap-jaw ant when the mandibles snap shut?
q1. if a thunder clap comes 1.4 s after the lightning strike how far away is the strike? calculating the wavelength and
The block slides across a smooth surface once it leaves thespring and then up a ramp. It travels up the ramp adistance of 275 cm What is the elevation angle of the ramp
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