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A Tsunami has a speed of 56 m/s and a 250-km wavelength. Assuming that a person notices the danger when the sea is at its lowest level. How long do they have to run to safety?
In a control system, an accelerometer consists of a 4.99-g object sliding on a calibrated horizontal rail, Find the force constant of the spring required for the calibration to be correct
What is the least radius of the circular path? (b) At this radius, what is the force causing the centripetal acceleration of the pilot.
One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. Determine the final speed of the two-object system
Two compact sources of sound oscillate in phase with a frequency of 90 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
A stationary railroad whistle is sounded. An echo is heard 5.0 seconds later by the train's engineer. If the speed of sound is 343 m/s, how far away is the reflecting surface
The small spherical planet called "Glob" has a mass of 6.06×1018 kg and a radius of 5.84×104 m. What was the initial speed of the rock as it left the astronaut's hand? (Glob has no atmosphere, so no energy is lost to air friction
A large iron cylinder of mass 265 kg rests so that its circular face rolls along the edge of a table, How far has the system moved along the horizontal
A rubber ball is bouncing along the lever floor. after each bounce it only goes back up to half of the height that it just fell from. make a proportional sketch displaying this ball bouncing six times.
A 3.7-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,062oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC. what is the final temperature of the iron block
The potential difference between the terminals of a battery is 12V when measured directly using a voltmeter. What is this maximum power
The electric motor of a model train accelerates the train from rest to 0.680 m/s in 34.0 ms. Find the average power delivered to the train during its acceleration
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
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