Thursday

April 24, 2014

April 24, 2014

Total # Posts: 17

**geometry**

What is the volume of a pyramid with a base area of 27 and an altitude of 6

**biology**

what is large-scale fermentation?

**political science**

what are the major contributions to the application of critical theory to the study of international relations?

**Physics**

I do not understand what you mean by "The direction tangent can be obtained from the ratio of the components."

**Physics**

A wheel spins on a horizontal axis, with an angular spped of 140rad/s and with its angular velocity pointing east. Determine the magnitude of the angular velocity after an angular acceleration of 35 rad/s^2, pointing 68 degress west of north, with a time of 4.6 seconds. I foun...

**Physics**

A team is chosen to design an orbiting space station that is shaped like a wheel 5o meters in diameter with is mass of 4*10^5 kg contained in the rim portion of the wheel. The space station will rotate at a rate such that a person working in the wheel will experience a simula...

**Physics**

A wheel spins on a horizontal axis, with an angular spped of 140rad/s and with its angular velocity pointing east. Determine the magnitude of the angular velocity after an angular acceleration of 35 rad/s^2, pointing 68 degress west of north, with a time of 4.6 seconds. I foun...

**Physics**

A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm away. What is the gun's muzzle velocity? Do i use something like v=sqr(k)/m*x. I am getting something like 3.2m/s, is this somewhat correct at all....

**Physics**

I am getting .625m/s with your way, but the choices I have are a. 2.0 m/s b. 1.0 m/s c. 3.2 m/s d. 4.9 m/s e. 3.9 m/s

**Physics**

A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm away. What is the gun's muzzle velocity? Do i use something like v=sqr(k)/m*x. I am getting something like 3.2, is this somewhat correct at all.

**Physics**

A sled that has a mass of 8.8kg moves horizontally at 20 km/h. When it passes under a bridge 13kg of snow drops ontothe sled. What is its subsequent speed? Isn't this in inellastic collision equation. I used (m1v1)+(m2v2)=(m1+m2)(vf) m1=8.8kg v1=20km/h m2=21.8kg v2=0km/h I...

**Physics**

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by v=3(i hat)+4(jhat), where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat is the y component o...

**Physics**

Determine the center of mass of a raft if a 72kg paddle is 0.81m from the stern and the 48kg paddle is 4.5m from the stern? Neglect the mass of the canoe itself. How far is the center of mass from the stern? Do i use the formula x=(m1x1+m2x2)/M m1=72kg x1=.81m m2=48kg x2=4.5m ...

**Physics**

A sledthat has a mass of 8.8kg moves horizontally at 20 km/h. When it passes under a bridge 13kg of snow drops ontothe sled. What is its subsequent speed? Isn't this in inellastic collision equation. I used (m1v1)+(m2v2)=(m1+m2)(vf) m1=8.8kg v1=20km/h m2=21.8kg v2=20km/h I...

**Physics**

Determine the energy neded to put 5kg, initially at rest on Earth's surface, into geosynchronous orbit. I get 2.9*10^8 where did I gow wrong?

**Physics**

Determine the value that has the largest total energy. Assuming that the orbirts are circular. (a) 1000 kg satellite at geosynchronous orbit (b) 1000 kg satellite in low earth orbit—roughly 300 km (c) 500 kg satellite at geosynchronous orbit (d) A 500 kg satellite in low ...

**Physics**

Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^-11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated. Do i have to add the kinetic energy of t...

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