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In the process of making lead shot, molten lead is drippedinto water. The lead forms small drops that harden to formthe shot. The specific heat of the shot can be approximatedas the same for both the solid and molten lead. If 0.2kg ofmolten lead at 400 C is droped into 2 kg of water at 20 C, what is the final temperature?
The yellow light from a helium discharge tube has a wavelength of 587.50. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.050.
Romeo and Juliet want to elope. It is a cold Italian day with ice on the ground. the coefficient of static friction between the ladder and the ice is .15. what's the maximum that Juliet can weigh
A 6.0 cm diameter pipe gradually narrows to a 4.0 cm diameter. What is the volume rate of flow
An unstable particle at rest breaks up into two fragments of unequal mass. what is the speed of the heavier fragment
Block A with mass 3.72 kg travels with speed vi=3.74 m/s on a smooth horizontal surface and collides with a stationary block B whose mass is 2.29 kg. How much kinetic energy was lost in the collision
A steel wire of length 2.02 with circular cross section must stretch no more than 0.210 when a tensile (stretching) force of 380 is applied to each end of the wire. What minimum diameter is required for the wire
A potential difference of 80 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion
A rocket is fired in deep space, where gravity is negligible. In the first second it ejects 1/160 of its mass as exhaust gas and has an acceleration of 15.3 m/s^2. find the speed (v_gas) of the exhaust gas relative to the rocket
If its length is 49.8 m when measured from inside the spacecraft, what is its length measured by a ground observer
Air conditioning on a university campus is provided by chilled water (10oC) pumped through a main supply pipe. The pipe makes a loop 5 km in length. The pipe diameter is 0.75 m and the material is steel. The maximum design volume flow rate is 0.65 m3..
A rectangular sample of a metal is 3.5 cm wide and 475 µm thick. When it carries a 42 A current and is placed in a 0.8 T magnetic field it produces a 6.5 µV Hall emf, Determine the Hall field in the conductor
The classroom temperature is 20 C. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room
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