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Two blocks with masses 0.44 kg (A) and 0.729 kg (B) sit on a frictionless surface. Between them is a spring with spring constant 29.6 N/m, which is not attached to either block The two blocks are pushed together, compressing the spring by 0.253 meter, after which the system is released from rest. What is the final speed of the block A? (Hint: you will need to use both conservation of energy and conservation of momentum to solve this problem).
The temperature of a plastic cube is monitored while the cube is pushed2.6 m across a floor at constant speedby a horizontal force of 15 N. What is the increasein the thermal energy of the floor
The energy diagrams below right demonstrate the mechanisms involved in making her hand warmer.
150 g of ice at -10.5 oC is raised to the melting point and then raised to 76.0 oC. How much heat is added to the system
Two small non-conducting spheres, eace of mass "m", carry an identical charge "q". what is the angle between each thread and the vertical
A 110 gram cube of ice at 0°C is dropped into 1.0 kilogram of water that was originally at 74°C. Find the final temperature of the water after the ice has melted
A ball m=1kg rolling without slipping on a flat surface with v=.1m/s strikes the wall after which v=.08m/s. What is the amount of heat generated due to impact?
High-speed stroboscopic photographs show that the head of a200-g golf club is traveling at 55m/s just before it strikes a 46-ggolf ball at rest on a tree. What is the speed of the golf ball just after impact
q1. a sled is being held at rest on a slope that makes the angle with the horizontal. after the sled is released it
Two 6.0 uC charges are placed on the x-axis at, one at x=0.0 and the other at x=1.0m. Another charge, -3.0uC is also on the x axis, what is the total electric field at position x=0.25m
A compressive force of 2.7×104N is exerted on the end of a 24-cm-long bone of cross-sectional area 3.9cm2. By how much will the bone shorten
A 0.037 kg aluminum bullet traveling at 478 m/s strikes an armor plate and comes to a stop. If all its energy is converted to heat that is absorbed by the bullet, what is the bullet's temperature change in degrees Celsius? (This is a multi-step pr..
A Gallup Poll asked, "If you had to choose, what should be the main focus of the U.S. government in dealing with the issue of illegal immigration-developing a plan for halting the flow of illegal immigrants into the U.S.
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