Astronomy | Astrophysics Answers

A satellite was launched in 1983. It followed an elliptical orbit that varied from about 2.00 x 10^3 km to 5.00 x 10^3 km above earth. What was its orbital speed at its closest approach to earth?

You own a restaurant that is investigating new ways to deliver beverages to customers. One

proposal is for a tube that will deliver root beer of density 1,090 kg/ m3

throughout the

restaurant. A section of the tube is shown below. The blueprints say that the speed and gauge

pressure of the root beer at point 1 are 3.00 m/s and 12,300 Pa respectively. The root beer at

point 2 is 1.20 m higher than the fluid at point 1 and is traveling at a speed of 0.750 m/s. You

can't make out the number on the blueprints for the pressure of the root beer at point 2. Use

Bernoulli's equation to figure out the gauge pressure of the root beer at point 2.

Fill a 250 mL beaker with water. Get two plastic straws 12 cm long. Place one straw

in the beaker with water. Place the second straw in the position shown in the figure, and blow

hard. Ask a classmate to observe the level of water in the first straw before blowing and while

blowing into the second straw. Why does the water rise when you blow into the second straw?

2.A horizontal pipe is 2 cm in radius at one end and increases in size so that it is 5 cm in radius at

the other end. Water is pumped into the small end of the pipe at 10 m/s and a pressure of

300 kPa (kilopascal). Find the

a.) speed and

b.) pressure of the water at the pipe’s large end.

1. Calculate the pressure needed for the pump of a 3 cm radius fire hose to pump water through

its nozzle of radius 2 cm at an average speed of 4 m/s when the nozzle is 15 m above the fire

track.

An irigation canal has a rectangular cross-section of 5 m width and 1.2 m depth. If water flows at a speed of 0.8 m/s, what is its flow rate? 

 The blood flows from the aorta of radius 1.0 cm to the millions of capillaries whose total cross section is 0.07 m2. The average speed of the blood flowing in these capillaries is 9 x 10－4 m/s. Calculate the speed flowing through the aorta. 

A water pipe narrows from a radius of r1 = 4.99 cm to a radius of r2 = 2.75 cm. If the speed of the water in the wider part of the pipe is 1.31 m/s, what is the speed of the water in the narrower part? 

.The planet Vulcan was postulated to exist in an attempt to explain the precession of Mercury. How long will Vulcan make one complete revolution around the sun if its distance from the sun is two-thrids that of Mercury?

You own a restaurant that is investigating new ways to deliver beverages to customers. One proposal is for a tube that will deliver root beer of density 1,090 kg/ m3 throughout the restaurant. A section of the tube is shown below. The blueprints say that the speed and gauge pressure of the root beer at point 1 are 3.00 m/s and 12,300 Pa respectively. The root beer at point 2 is 1.20 m higher than the fluid at point 1 and is traveling at a speed of 0.750 m/s. You can't make out the number on the blueprints for the pressure of the root beer at point 2. Use Bernoulli's equation to figure out the gauge pressure of the root beer at point 2.