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A rocket is fired at 48m/s, in a direction 400 to the horizontal. It explodes in mid air, 4s after the launch. Find the speed of the rocket just before the explosion.(assume that the motion of the rocket is approximately similar to a projectile motion)
A wave crest passes an observation point followed by a second crest. The time between crest is a period of 168.818 seconds. If the wave is traveling at a speed of 154.167 m/s, how long are the wavelengths?
Water flowing through a 2.00cm diameter pipe can fill a 280 L bathtub in 5.0 minutes. What is the speed of the water in pipe.
An 8-g bullet is fired into a 170 g block that is initially at rest at the edge of a table of 1m height. The bullet remains in the block, and after the impact the block lands d = 2.10 m from the bottom of the table. Determine out the initial speed..
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m. Illustrate what is the block's speed when it is at a height of 0.25 m above the base of the slide?
the power company charges 10 cents per kilowatt-hour, explain how much will it cost to leave the bulb on for 30 days? Show your work.
what is the minimum coefficient of static friction required between tires and race track if the car is to stay on the track at a speed of 130m/s.
Find the typical speed for a tsunami. (Note down that in the open ocean, tsunamis generally have amplitude of less than a meter, allowing them to pass ships unnoticed. As they approach shore, however, water depth decreases and the waves slow down. Th..
What is mechanical energy
The ceiling is of height 3.5 m, and the balloons are launched at a velocity of 10 m/s. The acceleration of gravity is 9.8 m/s2. Evaluate at what angle must they be launched to just graze the ceiling?
The velocity of an object falling in free fall increases with time. Does the acceleration also increase? Why or why not?
Find the position of the object to acquire real, magnified image, inverted, and virtual, upright image.
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