Friday
September 4, 2015

Posts by yoyo


Total # Posts: 48

Physics
A 10 g dart traveling at 400 m/s sticks into a 10 kg, 1 m wide door at the edge opposite the hinge causing the door to swing open. What is the angular velocity of the door immediately after impact?
August 14, 2015

Physics
What is the speed of a geosynchronous satellite on Earth?
August 11, 2015

Physics
A 10 g dart traveling at 400 m/s sticks into a 10 kg, 1 m wide door at the edge opposite the hinge causing the door to swing open. What is the angular velocity of the door immediately after impact?
August 11, 2015

Physics
The rotational inertia of a collapsing star changes to one third its initial value while conserving angular momentum. What is the ratio of the new rotational kinetic energy to the initial kinetic energy?
August 11, 2015

algbra 2
Yes it is.
August 10, 2015

Physics
cheers
August 10, 2015

Physics
A torque of 32Nm is applied to a wheel, which causes it to accelerate at 25 rad/s2. What is the rotational moment of inertia of the wheel? I got 1.28kg/m^2. Is this correct?
August 10, 2015

Physics
i used the centre of mass equation.... =(6x10^24*0)+(7x10^22*405608)/ 6x10^24+7x10^22 So how bout you? How'd you get to the answer?
August 9, 2015

Physics
A spaceship is on a straight-line path between the Earth and the Moon. At what distance from Earth is the net gravitational pull on the probe from the Earth and the moon zero? Mass of Earth = 6×10^24 kg. Mass of Moon = 7×10^22 kg. Can someone please confirm if my ...
August 9, 2015

Physics
A torque of 32Nm is applied to a wheel, which causes it to accelerate at 25 rad/s2. What is the rotational moment of inertia of the wheel? I got 1.28kg/m^2. Is this correct?
August 9, 2015

Physics
Just reposting. A spaceship is on a straight-line path between the Earth and the Moon. At what distance from Earth is the net gravitational pull on the probe from the Earth and the moon zero? Mass of Earth = 6×10^24 kg. Mass of Moon = 7×10^22 kg. The distance from ...
August 8, 2015

Physics
Just reposting. A cricket ball rotates at 1800 rev/min as it travels through the space in a straight line at 160 km/hr. How many times does it revolve after traveling 20m? Can someone confirm with me if 13.5 revolutions in 20m is right. That's the answer i got to. If it&#...
August 8, 2015

MTH 156
Make three equations using a,j,c. a+c+j=6900 3*a=j 2.5*j=c Use simultaneous equations to solve.
August 7, 2015

Physics
A spaceship is on a straight-line path between the Earth and the Moon. At what distance from Earth is the net gravitational pull on the probe from the Earth and the moon zero? Mass of Earth = 6×10^24 kg. Mass of Moon = 7×10^22 kg. The distance from the sun to the ...
August 7, 2015

Physics
it amazes me how much people are willing to write and give up time to answer anothers questions online. Cheers man.
August 7, 2015

Physics
A meter-long stick is balanced vertically on the ground. It is then made to fall with a gentle nudge. What is the speed of the end of the stick as it hits the floor? Assume the end on the floor does not slip. Treat the stick as a “thin rod.” Really need help with ...
August 7, 2015

Physics
A torque of 32Nm is applied to a wheel, which causes it to accelerate at 25 rad/s2. What is the rotational moment of inertia of the wheel? I got 1.28kg/m^2.
August 7, 2015

Physics
Cheers man. Appreciate it.
August 7, 2015

Physics
A cricket ball rotates at 1800 rev/min as it travels through the space in a straight line at 160 km/hr. How many times does it revolve after traveling 20m? Can someone confirm with me if 13.5 revolutions in 20m is right. That's the answer i got too. If it's wrong can ...
August 7, 2015

Math
I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model the growth of a ...
July 28, 2015

Calculus
y=x^2+1, y=2x^2-2 ***
May 19, 2015

Calculus
(a) Consider the region in the xy-plane consisting of the points (x; y) satisfying x > 0, y > 0, and lying between the curves y = x^2 + 1, y = 2x^2 2 and the two axes. Draw a diagram of this region. (b) This region is rotated about the y-axis to form a solid glass vase. ...
May 19, 2015

Calculus
If the integral from 0 to 8 of f(x)=4, then calculate the integral of f(4x) from 0 to 2.
May 19, 2015

Science
A 2000 kg car is rolling at 3 m/s. You would like to stop the car by firing a 10 kg blob of sticky clay at it. How fast should you fire the clay? How much energy is required to accelerate the clay to this speed?
March 24, 2015

math
if the area is 135 and the length is 15, then what is the width of it ?
January 20, 2014

Maths
I need it 2 to the power of ? =16^-2
November 13, 2013

Maths
Square root 'a' 16^-2 = 2?
November 13, 2013

Statistics/Probability
sw
July 7, 2013

Physics
A tennis player hits the ball horizontally with a speed of 30m/s at 1.5m above the ground. How far away will it land if the ball was hit at a speed of 35m/s
June 24, 2013

Physics
A tennis player hits the ball horizontally with a speed of 30m/s at 1.5m above the ground. How far away will it land if the ball was hit at a speed of 35m/s
June 24, 2013

Physics
A tennis player hits the ball horizontally with a speed of 30m/s at 1.5m above the ground. How far away will it land if the ball was hit at a speed of 35m/s
June 24, 2013

Physics
A tennis player hits the ball horizontally with a speed of 30m/s at 1.5m above the ground. How far away will it land if the ball was hit at a speed of 35m/s
June 24, 2013

math
The tax rate on Harriet Walker's $80,000 vacation home is 20 mills. The property is assessed at full value. How much will Harriet Walker pay in taxes this year? A. $640 B. $440 C. $1,600 D. $2,000
April 11, 2013

LA
Bahahahahahah
April 10, 2013

chemistry
Calculate the mass of sliver chloride, AgCl, and dihydrogen monosulfide, H2S, formed when 85.6g of sliver sulfide, Ag2S, reacts with excess hydrochloric acid, HcL.
February 18, 2013

chemistry
if 2.0 x 10-5 mol of sparingly soluble Cu(IO3)2 can dissolve in 2L of a very soluble NaIO3 sol'n, what is the molar concentration of the NaIO3 sol'n? (Ksp=1.4x10-5 for Cu(IO3)2)
December 17, 2012

phsyics
99.17
September 20, 2012

Chemistry
yaaaaasssssssssssss
August 11, 2012

managerial Financial Accounting
EXERCISE 12-11. Evaluating Investment Centers with Residual Income [LO 6] Lakeside Hospital is a division of Superior Healthcare organized as an investment center. In the past year, the hospital reported an after-tax income of $2,500,000.Total interest expense was $1,900,000,...
June 24, 2012

Math
7 boys 8girls
December 6, 2011

chemistry
Bottle A has a volume of 1.2 L, When Filled with sugar water the bottle has a total mass of 5.0 pounds. If the empty bottle has a mass of 800 grams. determine the density of the sugar water in g/mL.
August 17, 2011

Chinese
what does washa washa mean
February 24, 2011

physics
no
September 19, 2010

complete and simple subject
The answer for "the largest capital in Mexico is her home" is the largest capital in Mexico and Mexico
September 29, 2009

AP Physics (circular motion)
0.0028
September 24, 2009

history
who can give me more info about the ancient messopotamian's government housing program for my shool essay?
November 6, 2008

MAths
Hi my question is if we have a cube that is 20cm cubed And 2 lenths representing 24 cm and 23 cm We want to find x which is the width how do we do that ?
December 3, 2007

Maths
the speed of light is 3 * 10^ 8m/s. Jupiter is 778 million km from the sun. Calculate the number of minutes it takes for sunlight to reach Jupiter ? A star is 300 lights away from Earth. If the speed of light is 3 * 10^5 km/s. calculate the disatance from the star to Earth. ...
November 26, 2007

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