# Questions Asked onFebruary 1, 2013

1. ## Science

What do the letters rorpsfgnloadeeasi make. It's supposed to make a mystery phrase. We are learning about plate tectonics.

2. ## ap us history

to what extent did populists continue to focus on grievances of earlier movements?

3. ## physics

An airplane is flying with a velocity of 95.0 at an angle of 26.0 above the horizontal. When the plane is a distance 113 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog will the

4. ## Physics Electricity

Two identical point charges (q = 7.20 x 10^6 C) are fixed at diagonally opposite corners of a square with sides of length 0.480 m. A test charge (q0 = 2.40 x 10^8 C), with a mass of 6.60  108 kg, is released from rest at one of the empty corners

5. ## physics

A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 19.0{\rm cm} , giving it a charge of -13.0\mu {\rm C} Find the electric field just outside the paint layer. Find the electric field 8.50{\rm cm} outside

6. ## physics

If 3000ft/3 of air crossing an evaporator coil and is cooled from 75F to 55F, what would be the volume of air,in ft/3, exiting the evaporator coil?

7. ## chemistry

The density of water at 30.0 °C is 0.9956 g/mL. If the specific gravity of acetic acid is 0.1040 at 30.0 °C, what is the density of acetic acid at 30.0 °C?

8. ## chem

If you pour equal amounts of scalding hot water into different metallic cups of equal temperature, which cup will heat up the most? Rank the cups from hottest to coldest. Rank from warmest to coolest final temperature. 500-g cast iron cup 500-g gold cup

9. ## chemistry

how long would it take for 1.50 mol of water at 100C to be converted completely into steam if heat were added at a constant rate of 18.0J/s?

10. ## Physics

5. The ball launcher in a pinball machine has a spring that has a force constant of 1.20 N/cm . The surface on which the ball moves is inclined 10.0° with respect to the horizontal. The spring is initially compressed 5.00 cm. Find (a) the launching speed

11. ## calculus

The count in a bacteria culture was 600 after 10 minutes and 1100 after 30 minutes. What was the initial size of the culture?Find the doubling period. Find the population after 80 minutes. When will the population reach 13000?

12. ## physics

A force of 1.35 newtons is required to accelerate a book by 1.5 meters/second2 along a frictionless surface. What is the mass of the book?

13. ## Stats

The area between the mean and a Z score of +1.50 is 43.32%. This score is higher than ___ of the score in the distribution.

14. ## calculus 2

The curve y=sinh(x),0

15. ## PHYSICS

Because Earth's rotation is gradually slowing, the length of each day increases: The day at the end of 1.0 century is 1.0 ms longer than the day at the start of the century. In 93 centuries, what is the total (in hours) of the daily increases in time (that

16. ## Health

Which characteristic of a goal allows you to know when you have accomplished it? A) It is specific B) It is measurable C) It is unrealistic

17. ## physics

Comic-book superheroes are sometimes able to punch holes through steel walls. (a) If the ultimate shear strength of steel is taken to be 3.00 x 10^9 Pa, what force is required to punch through a steel plate 1.90 cm thick? Assume the superhero's fist has

18. ## Chemistry 3A

You want to make the following buffer: 5% glucose, 100 mM tris and 10 mM EDTA in a final voume of 300ml. Your stock solutions are 20% glucose, 1M tris and 0.5M EDTA. The diluent is distilled water. Determine how much of each you will add to make the

19. ## physics

An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.40 10-11 m. What is EPEfinal -

20. ## Chemistry

What weight of solute (M,wt =60) is required to be dissolved in 180gm of water to reduce vapour pressure to 4/5th of pure water?

asked by Jannat Sidhu From A.A.Cheema
21. ## Physics

potential energy well for a 2.0 kg particle (the function U(x) has the form bx2 and the vertical axis scale is set by us = 2.0 J). (a) If the particle passes through the equilibrium position with a velocity of 85 cm/s, will it be turned back before it

22. ## maths-urgently needed

From the top of a tower the angle of depression of an object on the horizontal ground is found to be 60degree. On descending 20 m vertically downwards from the top of the tower, the angle of depression of the object is found to be 30degree Find the height

23. ## math

Three people are being selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person

24. ## Chm 2046

The normal boiling point of liquid ethanol is 351 K. Assuming that its molar heat of vaporization is constant at 37.5 kJ/mol, the boiling point of C2H5OH when the external pressure is 1.35 atm is K.

25. ## Physics

A model airplane has a mass of .90 kg and moves at a constant speed on a circle that is parallel to the ground. Find the tension in the guideline (length = 17 m) for speeds of 19 and 38 m/s.

26. ## Chemistry

At 400°C the reaction H2+I22HI has an equilibrium constant Kp value of 55.5. A mixture of 1 mole of H2 and 1 mole of I2 is placed in a flask and heated to 400°C. Calculate the mole fraction of HI in the mixture of gases when equilibrium reached.

27. ## chem

Rank the following species according to the decreasing energy needed to raise the temperature of 10.0g of the substance by 25.0 degrees celsius Rank from most to least energy needed. Rank these in order of the question. copper aluminum cast iron silver

28. ## physics

an airplane is traveling horizontally 500 m/s at an altitude of 3000 meters. what's the distance the airplane should drop the bomb so it hits the target on the floor

29. ## Science

Which of the following is NOT true of bacteria? a. Bacteria change the sugar in milk to lactic acid. b. Bacteria change nitrogen into a form plants can use. c. Bacteria change harmful chemicals into harmless ones. d. Bacteria change oxygen into nitrogen.

asked by T.J And the Vibe
30. ## English

Which word correctly completes the sentence? To (blank) did you write the card? A. Who B. Whom I thnk the answer is B. Whom. Which meaning of the vocabulary word steep is used in the sentence below? The steep rise in gas prices angered the population. A.

100. ## algebra

the number N of state and federal inmates in millions during year x, where x greater than or equal to 2002 can be approximated by the following formula. N=0.05x-98.45 Determine the tear in which there were 1.7 million

101. ## health

Infant formula are planned to be: a. high in protein b.high in minerals and vitamins c.low in sugar d.similar to breast milk I think b not sure

102. ## Sociology HELPPPP

How does deviance and crime function both for and against society? Be sure to include social control in your answer group.

103. ## maths-urgently needed

A manufacturer lists the price of the goods at Rs.240 per article. The wholesaler gets a discount of 25% on the goods from the manufacturer.The retailers are allowed a discount of 15% on the list price by the wholesaler. The prescribe rate of sale tax at

5. What does AQI stand for? asthma quality index air quality index analysis query input air query input I think it is b.

105. ## chem

How many mL 0.1 M NaOH could you add to a buffer formed from 0.1 moles NaHCOO and 0.1 moles HCOOH without the pH going above 4.74? Ka (formic acid = 1.8 x 10-4)

106. ## Physics

Standing on a bridge, you throw a 3.0 g stone straight upward with speed of 2.5 m/s. How long does it take to return to the original position?

107. ## Statistics

Which of the following conditions doesn't need to be met before you can use a two-sample procedure? The responses in each group are independent of each other. Each group is considered to be a sample from a distinct population. The same variable is measured

108. ## biology

List any five anatomical differences between monocot root and dicot root.

109. ## english

could you please tell me how to use and identify the position of an adverb in a sentence

110. ## physics

find the impulse on a baqseball that is hit 80N of force in a time of 0.52 s

111. ## physics

a frieght train rolls at the same speed but has twice as much mass its momentum is

112. ## physics

in order to catch a fast moving softball with your bare hand doing this reduce the catching forcebecause the what

113. ## algebra

PLEASE help with the below. Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3

115. ## Algebra-help

Jordan decides to start a garden care service. He plans to charge $20 for the first hour and$10 for each additional hour that he spends working on a garden. He works 5 days a week and takes care of one different garden each day. How many hours will he

116. ## Algebra

4x+y=42 6x-5y=50 Solve using the substitution method.

117. ## Algebra

x-2y=.9 4x-3y=13.1 Solve using the substitution method.

118. ## julius caesar

The Roman crown will appear several times in the play. What is your impression of them in this scene? Cant figure this one help!!!!!!!

119. ## Algebra-help

9. Name all of the following numbers that are irrational. 2/3,√8,√144,5.2,0.(87) ̅,π I think it's just pi. Is that correct? Thank You

120. ## Algebra-help

12. A train traveled at a constant speed for 6 hours. The train traveled 225 miles in those 6 hours. What was the speed, in miles per hour, of the train? answer: 37.5 Is that correct? Thank You

121. ## maths

A completes a works in 15 days and B completes the same work in 20 days. If they both work together in 4 days . how much work is left?

122. ## Language Arts

7. Which of the following best summarizes "Cyber Chitchat"? 8. The tone of "Cyber Chitchat" is

123. ## Algebra

5[m(8+n)] law of multiplication of equivalent expression

124. ## Chemistry

30g of the palm shell were mixed with 15ml H3PO4 and 100ml of distilled water in a 250ml conical flask.The concentration of H3PO4 solution was 2.2M, from question,how to prepare those from ortho phosporic acid (98g/mol).Do help me, is it need to make a

125. ## math

whats 70.00 the selling price (this part percent whole) sales tax 5 percent so whats the sales tax

126. ## algebra

5x+20y is what

127. ## English

Rephrase the main idea of the sample in your own words, without repeating words or sentence structure from the original statement. "Right now, smartphones are selling like mad in the U.S. market, where sales jumped 84 percent between 2007 and 2008,

128. ## math

Allen drove 90 miles in 2 and 1/4 hours at a constand speed, how many miles did he drive in one hour.

129. ## soc

1)While it is rare, sometimes folkways can be laws.

Steve I already asked you the question about the absolute value of 3x-2=8 and absolute vale x+1=1....value of x...and your answer was does 0 or -2 satisfy both ....they dont...so is it no solution?

132. ## math

simplify (2x)^3 + 2^3 x

133. ## Geometry -8th gr

Given: triangle ABC ~ triangle PQR, m

134. ## math

simplify (2x)^3 + 2^3 x a) 8x^3 b) 16x^3 c)8(x^3+x) d) 4(x^3+x)

135. ## calculus 2

Megan bailed out of her plane at an altitude of 8000 feet, fell freely for 15 seconds, and then opened her parachute. Assume that the drag coefficients are a=0.1 for a fee fall and a=1.6 with a parachute. When did she land(in seconds)?

136. ## physical sciences

how much work is required to accelerate a can with a mass of 1000kg from 20 metre per second to 30m cubed

137. ## chemistry

How do you make 300 ml of a 2M solution from a 50 M stock solution?

138. ## Social Studies us history

How does the current distribution of wealth in the U.S. comapare to 1929?

139. ## College Algebra

3x^4=648x someone help please im so confused. i am trying to find the solution set?

140. ## physics

how do we find the interpolation from a graph to determin the number of images which should be observer with a mirror angle of 90 degree and how do we calculate the line equation.

141. ## social studies us history

I have to put this in one page and submit it today before 1:00 can someone please help me do this? I would really apperciate it very much How does the current distribution of wealth in the U.S. comapare to 1929?

142. ## calculus 2

Megan bailed out of her plane at an altitude of 8000 feet, fell freely for 15 seconds, and then opened her parachute. Assume that the drag coefficients are a=0.1 for a free fall and a=1.6 with a parachute. When did she land(in seconds)?

143. ## math

Describe the distribution of sample means (shape, expected value, and standard error) for samples of n  36 selected from a population with a mean of μ  100 and a standard deviation of   12.

144. ## Statistic

For a population with a mean of μ  70 and a standard deviation of   20, how much error, on average, would you expect between the sample mean (M) and the population mean for each of the following sample sizes? a. n  4 scores b. n  16 scores c. n  25

145. ## Math

If the population standard deviation is   8, how large a sample is necessary to have a standard error that is: a. less than 4 points? b. less than 2 points? c. less than 1 point?

146. ## history us

How does the current distribution of wealth in the U.S. compare to 1929? Include statistics. I really need help someone.

147. ## trig

A mountain road makes an angle θ = 8.4° with the horizontal direction. If the road has a total length of 3.4 km, how much does it climb? That is, find h.

148. ## physics

A mag lev train traveling at 180 m/s towards a rail way crossing sounds its horn with a wavelength of 0.20 m. What is the frequency of sound that people waiting at the rail way crossing hear?

149. ## Math

I need help solving this equation using the Factoring Completely method. X⁴-x³

150. ## buisness english

Mookie4571 Beginner (16) Which of the following sentences uses passive voice appropriately? A. "Your order was shipped yesterday and should arrive by Friday." B. "The shipping clerk sent your order yesterday and it should arrive by friday." C. "The

151. ## science

The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?

152. ## science

The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?

153. ## maths

The sum of the digits of a two digit number is multiplied by 8. The result is 8 more than the 2-digit number. Find the number

154. ## science

i have a project for school and i need to separate these things using house items. the ojects are marbles rice and coosecoose(its like smaller than rice) so i need to know how to separate the things. PLZ I NEED HELP!