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A 60 cm long steel rod with a diameter of 4 cm is mated to a 40 cm long Cu rod with the same diameter. the unmated end of the steel rod( not at the interface) is connected to a 140 degrees C heat source, while the far end of the Cu( not at the interface) is connected to a 20 degrees C heat source. when the rod reaches a steady state, what is the temperature at the steel Cu surface and heat rate through the rod.
In the figure below, two particles are launched from the origin of the coordinate system at time t = 0. Particle 1 of mass m1 = 5.00 g is shot directly along an x axis (on a frictionless floor), where it moves with a constant speed of 13.0 m/s. Pa..
What is the net upward force on an airplane wing of area 21.9 m2 if the speed of air flow is 293 m/s across the top of the wing and 278 m/s across the bottom
A 19.00kg lead sphere is hanging from a hook by a thin wire 3.40m long, and is free to swing in a complete circle. What must be the minimum initial speed of the dart
A barefoot field-goal kicker imparts a speed of 49 m/s to a football initially at rest. find the force exerted by the ball on the kicker's foot
Conisder the Earths magnetic field (53 uT) at a point near the equator where the field is horizontal, Calculate the velocity, V of this proton
q. a motorcycle is traveling up one side of a hill and down the other side. the crest of the hill is a circular arc
A system with m = 0.026 kg , k = 35 N/m and b = 0.59 kg/s is driven by a harmonically varying force of amplitude 3.6 N. Find the amplitude of the steady-state motion
A uniform plank of length 4.50 m and weight 275 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 456 N walk on the overhanging part of the plank before it just be..
Find out distance the two drivers travel
A neutron having mass of 1.67 X 10^-27 kg and moving at 10^8 m/s collides with a deutron at rest and sticks to it. Given that the mass of neutron is 3.34 X 10^-27 kg.
An electric dipole has opposite charges of 5.0x10^-15 C separated by a distance of .40mm. Determine the magnitude of the torque exerted on the dipole by the electric field
A light commuter rail train usually accelerates at a rate of 2.15 m/s^2 and usually decelerates with a rate of 3.20 m/s^2, The train can stop in 10.5 seconds from its top speed in an emergency. How far would it travel during this braking period
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