odu83

A sailor climbs the mast of a sailboat to a point 3 meters above the water. It looks like a nice day for a swim, so he decides to jump from the mast into the water horizontal to the keel.

If the 80 kg man jumps up at an angle of 45 degrees and a speed of 3 m/s. The moment of inertia of the boat is 15,000 as taken about a line parallel to the keel at water level. By how much does the man clear the edge of the deck 2 m from the mast? Assume the deck edge is at water level.

that has a 3,000 meter high mountain with the peak 2,000 meters from an enemy fort on the side exactly opposite the ship.

The ship's captain orders his gunners to attack the enemy fort with the 16 inch guns the moment the ship reaches the nearest position to fire.

The gunners have the option of firing the guns at 1,000 m/s

or 800 m/s and any angle from 15 degrees to 60 degrees. The shells each weigh 1,000 kg.

If the ship is 150 km from the peak when the order is given when is the optimal time, muzzle velocity and angle of the guns?

Ignore the curvature of the Earth, air resistance and assume the fort is on the same horizontal plane as the ship's guns.

The shot must clear the mountain and strike the fort. The shot will be from the front of the ship. The ship maintains constant speed throughout the maneuver.

My ice cubes always have cloudy air bubbles inside. Is there a way to freeze water without the bubbles? What is the physics or chemistry behind the solution?

to measure their instantaneous power output.

A recreational cyclist riding on a horizontal surface averaged 420 watts and 23 miles per hour for 1 hour of riding.

Assuming the body is 40% efficient (i.e. it consumes 60% of total work to output the 40%)

How many food calories did the cyclist burn?

If one cup of cooked rice is 225 calories, how many bowls of rice would the cyclist eat to replenish the energy consumed?

What is the average resistance the cyclist overcame to achieve this?

It drops into a ramp of height h.

The ramp forms a trough that guides the ball upward at an angle of theta with respect to the horizontal. At height n, the ramp ends.

At a distance d, there is a landing pad.

If the landing pad is positioned at exactly the right position so that the ball is only traveling horizontally, what is the height of the landing pad above the end of the ramp (a)?

Here's a picture

http://i142.photobucket.com/albums/r88/odu83/untit...

Calculate the height if h=4m,n=2m amd theta =45 degrees

use the 9.81m/s^2 for gravity.

He then points the transit at the top of the roof and notes the azimuth as 51.34 degrees.

How high is the wall?

He then rotates the transit and points it at the corner where the pitched roof and wall meet. He notes that the rotation was 36.86 degrees to the right. The new azimuth is 13.5 degrees.

What is the pitch of the roof?

He then points the transit at the top of the roof and notes the azimuth as 51.34 degrees.

How high is the wall?

Recipes appreciated. I have some early to mid-nineties cab in my cellar. I like to throw dinner parties and could use some insights.