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A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 142 ? when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.
What focal length does the lens need. Find out the electrostatic force exerted on one sphere by the other.
A block of mass 0.2kg is moving with a speed of 5m/s on a horizontal surface enters a rough patch ranging from x=0.1m to x=2.01m. The retarding force Fy
A wire (mass = 50 g, length = 40 cm) is suspended horizontally bytwo vertical wires which conduct a current I = 8.0 A, What is the tension in eitherwire
Explain the phenomenon of resonance. Use the phase of the interfering waves to determine the conditions for and location of constructive and destructive resonance
Two charged particles, q1 = ?2.50×10?3 C and q2 = +3.850e-3 C, are separated by a distance of 5.00 cm. What is the electric potential energy of this configuration
To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid
A polonium nucleus, while at rest, decays into a lead nucleus of rest mass 342.1126 x 10^-27 kg, and emits a helium nucleus of rest mass 6.6483 x 10^-27 kg. Determine the rest mass of the Polonium nucleus
The temperatures indoors and outdoors are 299 and 312 K, respectively. How much heat is removed from the house
A diverging lens (f = â€"12.0 cm) is located 23.0 cm to the left of a converging lens (f = 35.0 cm). Determine the distance of the final image relative to the converging lens
A 1290-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1805-N crate hangs from the far end of the beam. find the magnitude of the tension in the wire
A 1.00 kg soccer ball is kicked down field at 5 m/s by a Bob on Team A. Tom, a member of Team B, runs up and kicks the ball so that it is traveling at 15 m/s, what is the impulse acting on the ball
q1. megans mass is 27 kg. she climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 ms at the bottom of the
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