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A copper beaker of mass 0.20 kg contains 0.10 kg of water at 20.0degree C. A block of silver of mass 100 g at 90.0 degree C is added to the beaker of water. The entire system is thermally insulated from the surroundings, (specific heats- copper: 390 J/kg K, silver: 234 J/kg K, water: 4190 J/kg K)
1. What is the final temperature of the system?
2. What is the heat lost by the silver?
3. What is the heat gained by the water? What is the heat gain of the copper?
In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, find the maximum distance by which Healan is behind Laura
The radii of curvature of the surfaces of a thin converging meniscus lens are R1 = 12.0cmand R2 = 28.0cm. Is the final image erect or inverted with respect to the original object
An air-track glider attached to a spring oscillates between the 12.0 cm mark and the 55.0 cm mark on the track. calculate the maximum speed of the glider
q1. the driver of an 1800 kg car travelling on a horizontal road at 100 kmh suddenly applies the brakes. because of a
If the charge of the point charge in the figure were -2Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change.
Current & magnetic induction in the electrical circuits.
A cart starts from rest at the top of the tilted track. Assume the track is frictionless. The cart passes photogate A moving at speed 5.41 cm/s, Find the magnitude of the acceleration of the cart
Suppose that you want to find the equation for a line that passes through the two points (0,3) and (4,9). What is the slope of this line
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air. What is the intensity of the sound at the other end of the tube
A 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created.
The position of a particle moving along an x axis is given by x = 20t2 - 3.0t3, where x is in meters and t is in seconds. compute the maximum positive velocity reached by the particle
A certain string can withstand a maximum tension of 31 N without breaking. A child ties a 0.33 kg stone to one end and, holding the other end, What is the speed of the stone as the string breaks
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