Friday

September 4, 2015
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*

**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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