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Superman (m = 90 kg) jumps over a 51 m tall building by first accelerating from rest to his maximum velocity in 0.003 s. Subsequent to this time, Superman follows normal projectile motion. What is the average force acting on Superman that gives his upward acceleration?. In determining the initial velocity, ignore the distance superman travels during his initial acceleration stage. Also, assume he is jumping straight up.
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. calculate How fast are the waves traveling
A scooter begins at rest at t0 = 0 seconds. The scooter then accelerates and covers a distance d = 526 m, What is the scooters average speed during this period
1. - discuss the transient and steady states of a dc circuits response to a step input.2. -what components must be
A person sitting at a desk which is 51.2 m east and 9.9 m north of the point mid-way between the alarms does not hear them when they sound. What is the lowest frequency that the alarms can be sounding
Two thin conductingconcentric cylinders have infinite length. The inner cylinder has aradius a and a line charge density . The outer cylinder is uncharged and has a radiusof b.
A lightbulb filament has diameter 5.70×10?2 mm and carries 0.857 A. Find the current density in the filament
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
Body fat has an energy content of about 38,000 Joules per gram. Suppose your weight has been constant, how much weight will you have gained
Find the work done by 2.96 moles of an ideal gas if its volume doubles at a constant temperature of 23.2°C
An unstrained horizontal spring has a length of 0.33 m and a spring constant of 260 N/m. Determine the possible algebraic signs
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
Determine the tension in each cable if boat has a mass of 490 kg and the angle of each cable is 50 degrees from the horizontal and the boat is being momentarily held at rest. Evaluate this to the tension when the boat is raised and held at rest so th..
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