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A block of aluminum is 7cm x 5cm x 5cm. The initial temperature of the aluminum is -30oC.
A. How much heat must you add to bring the block temperature up to 30oC?
B. 500J of work are done on a system in a process that decreases the system's thermal energy by 300J. How much heat energy is transferred to or from the system?
A motorcycle accelerates uniformly from rest and reaches a linear speed of 22.0 m/s in a time of 9.0 s. What is the angular acceleration of each tire
A small object is placed to the left of a convex lens and on the optical axis. obtain the position of the image formed by the lens?
a proton in the upper atmosphere moves at 8.8times105 ms perpendicular to earths magnetic field which at that point
A 60kg block slides along the top of a 100kg block with an acceleration of 2.0m/s^2 when a horizontal force of 350N is applied. Find the coefficient of kinetic friction between the blocks
A car accelerates uniformly from rest for 20 seconds with anacceleration of 1.5m/s2. determine the acceleration while slowing down
an airplane with a speed of 80.0 ms is climbing upward at an angle of 62.4 deg with respect to the horizontal. when the
A super nova releases 1.0×1045 J of energy.It is 1670 ly from earth. how much energy would reach your face
A car with a mass of 2000 kg is moving east at 24 m/s. It collides with a truck that weighs 3200 kg moving north at 14 m/s. What is the velocity of the vehicles after the impact
explosives are used to blow a rock apart. the explosion blows the rock into three fragments. two fragments go off at a
A uniform rod rotates in a horizontal plane about a vertical axis through one end. The rod is 6.00?m long,weighs 11.0?N, and rotatesat 210 rev/min clockwisewhen looked at from above.
The masses of the earth and moon are 5.98 × 1024 and 7.35 × 1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge place..
A piano wire with mass 3.20 g and length 77.0 cm is stretched with a tension of 25.0 N. Calculate the average power carried by the wave
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