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Q. A picture hangs on a nail. The tension T in each string segment is 3.5 N. What is the equilibrant or the upward reaction force of the nail? a. What is the weight of the picture? b.What is the picture's weight?
Q. Amazingly, at the exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline. If I hit the trampoline at the velocity that you calculated in problem 2 (38.8m/s), and leave it at an angle of 36 degrees from the horizontal, at a velocity of 40 m/s, and am in contact with the trampoline for 0.5 second: (3a.) What is the average acceleration that I felt while in contact with the trampoline? (3b.) Is this velocity (40m/s), at that angle (36 degrees), enough to allow me to clear a spiky wall that is 25 meters away and 15 meter high?
On a summer day, the air conditioning breaks down and the air in your classroom becomes very warm and muggy with a vapour pressure of 20 hPa and a temperature of 25o C.
What is new angular speed of the merry-go-round
A solid, rectangular iron bar measures .40cm by 1.0cm by 30cm. Find the resistance between each of the three pairs of opposing faces, assume the faces in question are quipotentials.
What is the required average power.
assume that you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 rm m/s . The river has a current that runs at a speed of 1.00 rm m/s.
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
At one instant a bicyclist is 35.0m due east of a park's flagpole, going due south with a speed of 20 m/s. Then, 19 s later, the cyclist is 60.0 m due north of the flagpole, going due east with the speed of 11 m/s. For the cyclist in this 19s inte..
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
The weight of passengers on a roller coaster increases by 51 percent as the car goes through a dip with a 39 radius of curvature.What is the car's speed at the bottom of the dip.
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