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What is the total mass and total size of the Milky Way Galaxy? Is it possible to determine these large quantities even if we've never been able to look at ourselves from beyond our galactic borders? What methods do we use in order to get our calculations, and how accurate do we believe that they are?
Many people mistakenly believe that the astronauts that orbit Earth are "above gravity." Calculate g for space shuttle territory 150 km above Earth's surface. suppose Earth's mass is 6.0 1024 kg, and its radius is 6.38 106 m (6380 km). Your answer..
A clay ball of 0.1 kilogram is dropped 10 cm above a table. Determine what is its impulse
a 43.5 kg boy and a 56.0 kg girl are on the surface of a frozen lake 15.0 m apart. using a rope the boy exerts a
Two children seat themselves on a seesaw. The one on the left has a weight of 360 N while the one on the right weighs 480 N. The fulcrum is at the midpoint of the seesaw. If the child on the right is not at the end however is 1.25 m from the fulcrum ..
Crew members attempt to escape from a damaged submarine 126 m below the surface.What force must be applied to a pop-out hatch, which is 1.43 m by 0.716 m, to push it out at that depth? Assume that the density of the ocean water is 1024 kg/m3 and the ..
A 5.7 g bullet leaves the muzzle of a rifle with a speed of 326 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.85 m long barrel of the rifle
Joyce and Efua are skating. Joyce pushes Efua, whose mass is 40.0 kilogram, with a force of 5.0 Newton. Determine what is Efua resulting acceleration
The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long, What tension is needed to tune this string properly
Starting from the top and at rest a block slides down an inclined plane and has a velocity of 1.45 m/s at the bottom. Find the potential energy of the block at the top of the incline
To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. calculate the magnitudes of the forces on the ladder
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
The pressure inside a gas bottle at 25.5 °C is 3630 kPa. What will be the pressure inside the bottle
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