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A 250 gram ice cube at -10 C is placed in a Alum cup whose initial temp is 70 C. The system comes to an equilibrium temp of 20 C.
what is the mass of the cup?
A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 34.0 cm. What average force do you exert on the piston, neglecting friction and gravity
How does the frequency of harmonic motion change if we take a spring of seven times the modulus, increases or decreases by a factor of how much
A car is driven east for a distance of 49 km, then north for 23 km, and then in a direction 28° east of north for 28 km. FIND the magnitude (in km) of the car's total displacement from its starting point
Calculate the direction of the average force on the ball during the contact . The magnitude of the average force is 4700N
A pitcher throws a curveball that reaches the catcher in 0.59 s, What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher
assume the film show in the figure has an index of refraction of 1.36 and is surrounded by air on both sides.
An object of mass 48.0 g is initially placed in boiling water so that it is at 105° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
Two identical positive charges exert a repulsive force of 6.2 multiplied by 10-9 N when separated by a distance of 3.4 multiplied by 10-10 m. Calculate the charge of each.
What is an average power output of the laser. What is the rms value of the electric field in the beam.
A ray of light is incident from the air onto the surface of a diamond (n=2.42) at a 30 degree angle to the normal, calculate the speed of light in the diamond
If a drop is to be deflected a distance = 0.28 by the time it reaches the end of the deflection plate, what magnitude of charge should be given to the drop? Imagine that the density of the ink drop is 1000 and ignore the effects of gravity.
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