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Q. What mass (in grams) of steam at 100°C must be mixed with 124 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 37.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent heat of vaporization is 2256 kJ/kg.
Q. A copper rod of mass m = 1.00 kg rests on two horizontal rails a distance L = 1.04 m apart and carries a current of i = 47.0 A from one rail to the other. A top view and a side view. The coefficient of static friction between rod and rails is μ = 0.610. What are the (a) magnitude and (b) angle (relative to the vertical) of the smallest magnetic field that puts the rod on the verge of sliding?
An airplane is flying with a velocity of 86.0 at an angle of 23.0 above the horizontal. When the plane is a distance 114 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
A long wire lying along the x-axis carries a current of 2.8 A in the +x direction. There is a uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors along the cartesian coordinate axes') in units of..
A pipe open only at one end has a fundamental frequency of 214 Hz. A second pipe, initially identical to first pipe, is shortened by cutting off the portion of the open end. Now, as both pipes vibrate at their fundamental frequencies, the beat freque..
Determine the angular acceleration of the pulleys and the tension T in the cord supporting the 612 Kg mass when it is released from rest.
A U-shaped tube is open to the air at both ends and is partially filled with Mercury (density = 13,600 kg/m3). Water (density = 1000 kg/m3) is poured into the left arm until the water is 10 cm deep. How long upward from its initial position does t..
The coefficient of kinetic friction between block and ramp
How to create a condition of weightlessness inside aircraft
What is Lagrangian for the system
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
A small metal bead, labeled A, has a charge of 29 . It is touched to metal bead B, initially neutral, so that the two beads share the 29 charge, but not necessarily equally. When the two beads are after that placed 5.0 apart, the force between the..
A small block with a mass of 0.120kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.70m/s. The cord is then pulled from ..
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