Thursday

September 18, 2014

September 18, 2014

Total # Posts: 23

**probability **

Rosencrantz and Guildenstern In the opening scene of Tom Stoppard's play Rosencrantz and Guildenstern Are Dead, about two Elizabethan contemporaries of Hamlet, Guildenstern flips a coin 91 times and gets a head each time. Suppose the coin was balanced. a. Specify the ...
*October 19, 2013*

**Probability **

Rosencrantz and Guildenstern In the opening scene of Tom Stoppard's play Rosencrantz and Guildenstern Are Dead, about two Elizabethan contemporaries of Hamlet, Guildenstern flips a coin 91 times and gets a head each time. Suppose the coin was balanced. a. Specify the ...
*October 19, 2013*

**Probability **

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find the probability that ...
*October 19, 2013*

**Statistics **

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find the probability that ...
*October 18, 2013*

**Physics**

Assume that the maximum aperture of the human eye, D, is approximately 8 mm and the average wavelength of visible light, λ, is 5.5 x 10-4 mm. a. Calculate the diffraction limit of the human eye in visible light. D = 8 mm = 0.008 m λ = 5.5 x 10-4 mm = 5.5 x10-7 m &#...
*September 23, 2013*

**Physics **

Assume that the maximum aperture of the human eye, D, is approximately 8 mm and the average wavelength of visible light, λ, is 5.5 x 10-4 mm. a. Calculate the diffraction limit of the human eye in visible light. D = 8 mm = 0.008 m λ = 5.5 x 10-4 mm = 5.5 x10-7 m &#...
*September 22, 2013*

**Physics**

yes i solve it like this but we will not need the speed of the earth ?
*September 17, 2013*

**Physics**

Earth speeds along at 29.8 km/s in its orbit. Neptune's nearly circular orbit has a radius of 4.5 x 109 km, and the planet takes 164.8 years to make one trip around the Sun. Calculate the speed at which Neptune plods along in its orbit.
*September 17, 2013*

**Physics **

Earth's mean radius and mass are 6,371 km and 5.97 x 1024 kg, respectively. Show that the acceleration of gravity at the surface of Earth is 9.80 m/s2.
*September 17, 2013*

**Physics**

I solve it, but i don't know the sign of each one of them .. can you help me in this part please .. F = (G.m1.m2) / (r2) F = (6.673 x 10-11 x 100 x 1) / (12) F = 6.673 x 10-9 N
*September 17, 2013*

**Physics**

Two balls, one of gold with a mass of 100 kg and one of wood with a mass of 1 kg, are suspended 1 meter apart. What is the attractive force, in newtons, of a. the gold ball acting on the wooden ball? b. the wooden ball acting on the gold ball?
*September 17, 2013*

**MATH**

Here's the five- number summary for the distribution of cigarette taxes (in cents) among the 50 states and Washington, D.C. in the United States. Min. = 2.5, Q1= 36, Median = 60, Q3= 100, Max. = 205 About what proportion of the states have cigarette taxes (i) greater than ...
*September 14, 2013*

**Statistics **

Here's the five- number summary for the distribution of cigarette taxes (in cents) among the 50 states and Washington, D.C. in the United States. Min. = 2.5, Q1= 36, Median = 60, Q3= 100, Max. = 205 About what proportion of the states have cigarette taxes (i) greater than ...
*September 14, 2013*

**Physics**

Two balls, one of gold with a mass of 100 kg and one of wood with a mass of 1 kg, are suspended 1 meter apart. What is the attractive force, in newtons, of a. the gold ball acting on the wooden ball? b. the wooden ball acting on the gold ball?
*September 12, 2013*

**Astronomy**

Earth is spinning along at 1,674 km/h at the equator. Use this number to find Earth's equatorial diameter.
*September 10, 2013*

**Physics **

Using the scale (1 light-minute equals 10 mm), how many millimeters represent a light year? On this scale, what is the distance from Earth to the nearest star? To the Andromeda Galaxy? (Note that 1 meter = 103 mm and that 1 km = 103 meters.)
*August 30, 2013*

**Physics **

The information from an internet web host may sometimes reach your computer by traveling as light to a satellite approximately 3.6 x 107 meters above Earth's surface and back again. What is the minimum time, in seconds, that the information takes to reach your computers?
*August 30, 2013*

**Kindergarten Math**

what is counter? My child has to draw a piece of yarn 3 counters long over the top needle, 4 counters long over the middle neddle and 5 counters long over the bottom needle! But I don't know what a counter is!
*April 19, 2010*

**Physics**

A car weighing 9800 N moves around a circular track of 70 m in 60 s. (a)
*November 18, 2006*

**Physics**

A book whose mass is 3 kg is projected up a long 40 degree incline with an initial speed of 25 m/s The coefficient of kinetic friction between the book and the Mane is 0.20. (a)
*November 18, 2006*

**Physics**

A 4 kg block resting on a horizontal surface is attached to an 8 kg block that hangs freely by a cord passing over a frictionless pulley. The coefficient of kinetic friction between the block and the horizontal surface is 0.4. Find the acceleration of the blocks and the ...
*November 18, 2006*

**Physics**

A loaded elevator with very worn cables has a total mass of 3000 kg, and the cables can withstand a maximum total tension of 40,000 N. (a) What is the maximum upward acceleration for the elevator if the cables are not to break? (b) What must the tension be in order for the ...
*November 18, 2006*

**Physics**

is it 0.176
*September 25, 2006*

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