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A 0.37 kg block of copper is heated to 254 degrees Celsius, then dropped into a beaker containing 0.6 kg of water at a temperature of 25 degrees Celsius. What is the final temperature of the block and water when the come into equilibrium? The specific heat of copper is 387 J/(kg deg C), and the specific heat of water is 4186 J/(kg deg C).
q1. a child is sliding on a sled at 1.6 rm ms to the right. you stop the sled by pushing on it for 0.80 rm s in a
A massless plank of length L = 2 m has two supports. One support is at the left end and one is in the middle. What is the normal force on the middle support
The cofficient of friction between the 3 kg blockand surface in figure is0.4the system starts from rest. what is the speed of the 5kg when it has fallen 1.5m?
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2. find the magnitude of the contact force between the two blocks
A 48.5 kg circus acrobat drops from a height of 1.62 meters straight down onto a springboard with a force constant of 7.95 103 N/m, By what maximum distance does she compress the spring
Find out the tension in the strap, given that the suitcase moves with constant speed and that the coefficient of kinetic friction between the suitcase and the floor is 0.40.
De Broglie postulated that the relationship λ =h/p is valid for relativistic particles. Determine the de Broglie wavelength for a (relativistic) electron having a kinetic energy of 3.40 MeV
A torque of 24.0 N m is applied to a solid disk, accelerating itfrom rest to an angular velocity of 140.0 rpm. (The disk has a massof 2.00 kg and a radius of 0.200 m.) What is the final rotational kinetic energy of the disk?
An 79-kg stuntman jumps from a window of a building situated 33 m above a catching net. Assuming that air resistance exerts a 100-N force on the stuntman as he falls, identify his velocity just before he hits the net.
A baseball is bunted down the third-base line leaving the bat from a height of 0.850m with an initial velocity of 4.00m/s at an angle of 37.87° above horizontal.
A current of 10.0 mA is maintained in a single circular loop with a circumferenceof 1.20 m. A magnetic field of 0.880 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?
Two objects attract each other gravitationally with a force of 3.1×10?10N when they are 0.45m apart. One of the object has a mass of 2.0kg. Find the mass of the other object
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