stewart
Popular questions and responses by stewart
Physics
An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through the center of an orange
asked on November 10, 2014 
physics
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.54 kg and length L = 5.12 m to a uniform sphere with mass ms = 32.7 kg and radius R = 1.28 m. Note ms = 5mr and L = 4R. 1)What is the moment of inertia of the object about an axis
asked on November 10, 2014 
Physics
A spherical bowling ball with mass m = 3.2 kg and radius R = 0.107 m is thrown down the lane with an initial speed of v = 8.6 m/s. The coefficient of kinetic friction between the sliding ball and the ground is μ = 0.34. Once the ball begins to roll
asked on November 6, 2014 
physics
At t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = .33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2 N/m and slides on a frictionless surface. At
asked on December 1, 2014 
Physics
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.54 kg and length L = 5.12 m to a uniform sphere with mass ms = 32.7 kg and radius R = 1.28 m. Note ms = 5mr and L = 4R. 1)What is the moment of inertia of the object about an axis
asked on November 7, 2014 
Maths
Tamin bought a ticket in a raffle in which 500 tickets were sold. If there are 5 prizes, what is the probability that Tamin does not win a prize?
asked on October 30, 2016 
Physics
Someone please help me! I've been stuck on this problem for a while now and i can't figure it out! A disk with mass m = 5.2 kg and radius R = 0.44 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.59 m from the
asked on December 5, 2014 
physics
A disk with mass m = 5.2 kg and radius R = 0.44 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.59 m from the rope and at a frequency f = 18.6 rev/s (with a direction shown by the arrow). 1. What is the magnitude
asked on November 24, 2014 
Physics
A uniform disk with mass m = 8.54 kg and radius R = 1.35 m lies in the xy plane and centered at the origin. Three forces act in the +ydirection on the disk: 1) a force 333 N at the edge of the disk on the +xaxis, 2) a force 333 N at the edge of the disk
asked on November 10, 2014 
physics
A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is μ = 0.64.
asked on November 6, 2014 
physics
A disk with mass m = 8.1 kg and radius R = 0.33 m begins at rest and accelerates uniformly for t = 18 s, to a final angular speed of ω = 34 rad/s. What is the angular acceleration of the disk? What is the angular displacement over the 18 s? What is the
asked on November 3, 2014 
physics
A bumper car with mass m1 = 100 kg is moving to the right with a velocity of v1 = 4.6 m/s. A second bumper car with mass m2 = 86 kg is moving to the left with a velocity of v2 = 3.8 m/s. The two cars have an elastic collision. Assume the surface is
asked on October 14, 2014 
Physics
A satellite is placed 39875 m above the Moon's SURFACE. (M=7.35e22 kg, R=1.74e6 m) Find the Period of the satellite in seconds. (assume a circular orbit)
asked on April 24, 2014 
Physics
A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.
asked on April 24, 2014 
Equation of the Tangent Line
Find the equation of a line tangent to te curve xy = sqrt(xy  x) + 1 at the point (1, 2).
asked on June 5, 2012 
math
solve 3.7^4*x = 9271
asked on February 19, 2012 
Math
2 = r cos( – 90°) y ?
asked on September 6, 2011 
Physics 30
A radioactive isotope(h=4.5days) was prepared. This isotope was used 14 days later when it had an activity of 6000000 Bq. What was the activity of this isotope when initially prepared?
asked on January 9, 2011

Dawes
5ft*7ft=35sqft
posted on December 8, 2015 
Trigonometry
sin(A) = 1/csc(A) its the same thing so its always equal
posted on December 8, 2015 
Calculus
Minimize: c= 3.25(2w+l)+5.45(l) Constraint: A=lw=600
posted on December 8, 2015 
chemisrty
3.6mol Cl₂ x 2mol NaCl x 58.44g NaCl = 420.78
posted on December 7, 2015 
Science: Chemical Reactions
Ionic bond Na+ + Cl > NaCl this is also known as table salt :)
posted on December 7, 2015 
physics
I was mistaken the answer that I kept getting was 25.1136.
posted on November 7, 2014 
Physics
Every number I have posted is correct. I'm just having problems with 3 and 5. I have access to all of those equations too but i still can't seem to find the right answer. I've been trying for hours and like I said no one i have talked to knows how to do it
posted on November 7, 2014 
MATHS
Great answer Reiny but line 8 is the wrong way round and should read P=2*L 10x+y1=2(10y+x1) but it doesn't change the answer
posted on August 8, 2014 
Derivatives ~ Calculus
After integrating and solving, I got approximately 4.711393061. Does this seem right?
posted on June 5, 2012 
Social Studies
east and west
posted on November 17, 2011 
Physics 30
The answer on my handout is 5.18 x 10^7
posted on January 9, 2011