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A child complains that her 160 g of milk is too hot at 90 degree C. She then pour 80 g of cold milk at 7 degree C in it. If the specific heat of milk is 3800 J/kg.K, what is the temperature of the mixture?
A 9.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point between the two masses 19.0 cm from the 9.00 kg mass along the line connecting the two fixed masses.
A square steel plate is 0:20 m on a side and 4:00 mm thick. Find the shear strain that results if a force of magnitude 8x10^4 N applied to two of the four long sides parallel to the sides
A bungee cord is stretched between two poles with a force of 390 N. What is the velocity of a wave on this bungee cord
What are the direction and magnitude of the magnetic force the field exerts on the proton.
What is the angle between the resultant vector and the horizontal? If the magnitude of the resultant is zero, then enter 'none'
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 141 N/m. The bullet becomes embedded in the block. If bullet-block system co..
The linear acceleration of the center of mass of a yo-yo is 2.0m/s^2 as it rolls by gravity down its string. what is its rotational inertia
In a certain automobile engine with an efficiency of 19.2%, combustion of gasoline in one cylinder releases 490 J of heat. Find the total mechanical power produced by all four cylinders, operating at 48 cycles/s, or 2880 rpm
A proton enters the gap between a pair of metal plates (an electrostatic separator) that produces a uniform, vertical electric field between them. Ignore the effect of gravity on the proton.
A 3.0 kg particle with velocityv = (5.0 m/s) i - (6.0 m/s) j is at x =3.0 m, y = 8.0 m. It is pulled by a 7.0 N force in the negative x direction. find the angular momentum of the particle about the origin
An object is placed 2.0 cm from a converging lens with focal length 1.5 cm. Determine the location of the final image
An aircraft?weighing 971?N? is accelerated?at 9.1 m/s2 for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
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