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Two cars of 2000 kg each collide head-on while traveling at 75.0 miles per hour. Assuming all of their kinetic energy is transformed into thermal energy of the resulting wrecks. What is the temperature increase of the cars? For simplicity, we can assume the material being all iron.
50 g ball travelling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.51 ms, what is the average acceleration of the ball throughout this time inter..
You drive at 65 mi/h towards the east for 2 hours and then turn towards the north and drive at 56mi/h for 1 hour. find the average speed and average velocity
A shotgun blast of 140 decibels occurs with humidity of 70% and temperature of 50 degrees. Illustrate what is the decibel level at 100 yards away? At 200 yards
What are the d irections of electric field
A spherical shell of copper with an outer diameter of 19.0 cm floats on fresh water with one third its volume above the water's surface
Antimony (atomic number 51) is composed of two principal isotopes, antimony-121, which has a mass of 120.904 atomic mass units, What is the atomic mass of natural antimony?
An elevator cable can withstand a maximum tension of 19,500N before breaking. The elevator has a mass of 480 kg and a maximum acceleration of 2.24 m/s2. Engineering safety standards require that the cable tension never exceed two-thirds of the breaki..
A rectangular block of ice 14.0 m on each side and 1.4 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.
You are driving 110 miles to Columbus from Cincinnati. The first 100 miles you drive a good speed of 75mi/h . Unfortunately, you hit a traffic jam the last 10 miles where at least you move a constant 8.00mi/h .
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. What is the height of the arrow above the ground once it has travelled the 43.0 m horizontally
Monochromatic light falls on two very narrow slits 0.045 mm apart. Successive fringes on a screen 5.00 m away are 6.2 cm apart near the center of the pattern. estimate the frequency of the light
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