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A 50 kilogram parachute jumper descends at a steady 40 km/h. Determine what is the force of air on the parachute?
Consider a system composed of a mixture of 2.50kg of ice and 50 gr of liquid water and a small separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevent.
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 38.0°, at what height will the stream of water strike the building
Two steel wires(of the same length and different radii) are connected together, end to end, and tired to a wall. How far does the midpoint move
when a parachute opens the air exerts a large drag force on it. this upward force is initially greater than the weight
A ball of mass 1.10 kg moving with speed of 2.0 m/s hits a wall and bounces back with the same speed in the opposite direction. What is the change in the ball's kinetic energy
In a typical television or in an older computer picture tube (CRT),the electrons that strike the screen to form an image areaccelerated between two charged plates that have a potentialdifference of 2.5×104 V. The plates are separated by adistance ..
The longest recorded pass in an NFL game traveled 83 yards in theair from the quarterback to the receiver. Assuming that thepass was thrown at the optimal 45 degree angle, what was the speedat which the ball left the quarterbacks hand?
Oxygen, modeled as an ideal gas, is in a container and has a temperature of 63.9°C. What is the rms-average magnitude of the momentum
There is evidence that elephants communicate via infrasound, Determine the intensity level of the infrasound 10 km from the source, assuming the sound energy radiates uniformly in all directions
An organ pipe is 1.17 m long. The temperature of the air is 20 degree C. What is the fundamental harmonic frequency of this pipe when it is closed at one end
The average density of the planet Pluto is 2357 kg/m3. The acceleration of gravity on its surface is 0.76 m/s2. Calculate the average radius of Pluto
A ball swings in a vertical circle at the end of a rope1.40 m long. When the ball is36.3° past the lowest point on itsway up, its total acceleration is (-22.5 i + 20.2j) m/s2. Determine the magnitude of its radial acceleration.
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