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A fire hose exerts a force on the person holding it. This is because the water accelerates as it goes from the hose through the nozzle.
How much force is required to hold a 7.5 cm diameter hose delivering 420L/min through a 0.72 cm diameter nozzle?
Physics, Academics
Suppose that your user's manual lists your car's weight at 2800 pounds, and you calculate a weight of 2900 pounds based on measurements of the car's tire areas and pressure. What is the percent error between your experim ...
Question: During your summer internship for an aerospace company, you are asked to design a small research rocket. The rocket is to be launched from rest from the earth's surface and is to reach a maximum height of 940m ...
A ball with a mass of 1.5 kg is observed to move with an acceleration of 6 m/s2. What is the size of the net force acting on the ball? A 2.5-kg block being pulled across a table by a horizontal force of 80 N also experie ...
Question: A soap bubble is essentially a thin film of water surrounded by air. The colors you see in soap bubbles are produced by interference. What visible wavelengths of light are strongly reflected from a 390 {\rm nm} ...
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.0 m/s at ground level. The engines then fire, and the rocket accelerates upward at 5.00 m/s^2 until it reaches an ...
PART A: Find Leslie's average speed when she runs to the store 14 km away in 24 min Express your answer to two significant figures and include the appropriate units. PART B: How fast is this in m/s? Express your answer t ...
Question: The radius of the earth's orbit around the sun (assumed to be circular) is 1.5*10^8 km , and the earth travels around this orbit in 365 days. a) What is the magnitude of the orbital velocity of the earth in m/s ...
Question: A package of mass m is released from rest at a warehouse loading dock and slides down a 3.0 m-high frictionless chute to a waiting truck. Unfortunately, the truck driver went on a break without having removed t ...
Question: Suppose that two stars in a binary star system are separated by a distance of 90 million kilometers and are located at a distance of 180 light-years from Earth. Part A What is the angular separation of the two ...
Question: As a roller coaster car crosses the top of a 48.01-m-diameter loop-the-loop, its apparent weight is the same as its true weight. What is the car's speed at the top? The response must be typed, single spaced, mu ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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