Questions Asked on
May 12, 2018

physics
A piece of copper of mass 300 g at a temperature of 950 degree Celsius is quickly transferred to a vessel of negligible thermal containing 250 g of water at 25 degree Celsius. If the final temperature of the mixture is 100 degree Celsius calculate the mass
asked by rita 
Social Studies
what is one example if the way a rise in productivity during the 1950s improved the standard of living in the united states? A.It gave workers more time off. B.It led to a sharp increase in urbanization. C.It led to the end of discrimination in the United
asked by Kool Kid 
Science
The strength of the force of gravity between two objects is determined by which of the following factors? Select all that apply. A. the masses of the objects B. the distance between the objects C. the volumes of the objects D. the surface area of the
asked by Boi 
Science
Explain the value or importance of using the International System of Units when describing motion. Provide an example that supports your reasoning. PLZ PLZ HELP ME!
asked by Mary4everlife 
chem
3. Which plastic do you think could best contain extremely corrosive material? Why? Choices: PET or PETE, HDPE, PVC, LDPE, PP, PS.
asked by help pls!!!!!!!! 
physics
Describe an experiment to determine the boiling point of a small quantity of a liquid
asked by rita 
Math
Jennifer writes the letters MONTANA on cards and then places the cards in a hat. What is the probability of picking an M? a. 1/6 b. 1/7**** c. 6/1 d. 7/1
asked by Sid.V 
physics
Pls help pls help me solve. Dry steam at 100 degree Celsius is bubbled into 500 g of water originally at 20 degree Celsius. What will be the temperature of the water after 30 g of steam has condensed? ( specific heat capacity of water =4200,specific latent
asked by rita 
physics
What mass of ice at 14 degree Celsius will be needed to cool 200 cm of an orange drink from 25 degree Celsius to 10 degree? (specific latent heat of fusion of ice=336000,specific heat capacity of ice=2100 specific heat capacity of water=4200
asked by rita 
physics
Pls help me. Explain the following a. When methylated spirit is poured on the skin, it has cooling effect, b. A piece of ice at 0 degree Celsius cools a drink more effectively than the same mass of cold water at 0 degree Celsius, c Ice floats on water, d.
asked by rita 
Chemistry
Determine the hydronium ion concentration in a solution that is 0.00039 M HCl. Answer in units of M.
asked by Kiara 
Science
Discuss the different types of energies possessed by a flowing liquid. Derive an expression for the total energy per unit mass of a flowing liquid
asked by Nurjamal 
Language Arts
What is the genre of "Happiness Is Charming Charlie Brown at Orlando prep
asked by Elizabeth 
maths
Using a protector and a ruler ,draw ∆ABC ,with A^=35°,AC =6cm and C^=65°.draw a second triangle.∆GHI,with G^=80° ,GH=9cm and H^=35°.
asked by Thandiwe dlamini 
MathLimits
How do we evaluate limit of, lim x> 0 [ln(x+1)/( (2^x)  1)] I tried using the substitution x+1 = e^k , when x tends to 0 so does k, which gave out, lim k>0 [ k/((2^((e^k)  1)) 1 ) ] which I simplified into( for the ease of use let e^k =a) lim k>0
asked by Ashley 
Algebra
Riley uses the equation y = 10x to calculate the amount of money he earns after working x hours. The table below shows the amount of money Mandy earns after working different numbers of hours. Hours Worked Amount Earned 9 $81 12 $108 15 $135 Which
asked by Julieanna 
Physics
Anybody help me with this? A disk with mass m = 6.5 kg and radius R = 0.41 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.4 m from the rope and at a frequency f = 19.4 rev/s (with a direction shown by the
asked by katie 
Maths
Using all the digits 1,2 and 9 write the smallest possibl 6 digit number where digits may be repeated
asked by Prateek patel 
Chemistry
Determine the [OH−] in a 0.42 M solution of HClO4
asked by Kiara 
physics
Pls help me God will bless you all. A piece of copper ball of mass 20 g at 200 degree Celsius is placed in a 50 g of water at 30 degree Celsius, ignoring heat losses, calculate the final steady temperature of the mixture. Specific heat capacity of
asked by rita 
Math
which one of the following gives the distance between the numbers 11 and 8? 19, 3, 19, 3 How do you figure out these problems??
asked by ana 
Chemistry
Identify the following as a complex ion or coordination compound: 1) [Co(NH3)3Cl3] 2) [Co(NH3)3Cl2]Cl 3) [Ni(NH3)4]^2+ 4) [Cu(NH3)4]^2+
asked by Yui 
Geometria
Two sides of a triangle are 11cm and 16cm what is the range of possible lengths for the third side
asked by Yeni 
physics
What are the differences between evaporation and boiling
asked by rita 
English
What type of literacy device is being used here and how ? “Each time I rise to my feet I am knocked to the ground”
asked by Jennifer 
history
Hi, I have a history essay coming up with the question: Explain Cause and Effect relationship between WW2, Cold War, and Civil Rights. I was wondering if anyone had any recommendations for things to make sure to include in the essay or links that will help
asked by joy 
algebra
2 times the sq rt of 5 + 3 times the sq rt of 7 ^2
asked by mary 
Physics
For what combination of parallel and series resistors will resistors of 25 ohms, 100 ohms, 50 ohms, and 50 ohms have a total resistance of 62.5 ohms?
asked by Anonymous 
History
What was city life like for poor Romans?
asked by boop 
Chemistry
How we differentiate bw citric acid and tartaric acid by identification test?
asked by Rao waqar 
Anatomy
Why is splenic artery a subject to erosion by penetrating ulcer of posterior wall of stomach into lesser sac ??
asked by Sohmay 
Math
The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone
asked by M 
Language Arts
What are the code words for language arts 6B. I have three already. Aerosmith Journey Heart Does anybody have the rest? Thanks
asked by Ming 
Math
Sulfuric acid is diluted in water to make new mixtures. In one container, 72 ml of a 14% acid solution and, in another container, 64 ml of a 31$ acid solution. The contents of the containers are mixed together? What's the percentage strength of the acid in
asked by Alex 
maths
Heat energy
asked by rita 
Math
The curve y=x^33x^28x+4 has tangent L at point P (1,8). Given that the Line M is parallel to L and is also a tangent to Q show that the shortest distance between L and M is 16 root 2 Sorry This is the correct question
asked by Jodis 
Physics
I have to fill the following table, I know it should only be applying formulas, but I'm not sure which formulas should I apply in every section. I would like to know which is the difference between the conductivity in Siemens per meter and the conductivity
asked by Josh Garder 
physics
How can I change each of Normal force, Gravity and Friction force?
asked by pipe 
maths
Sequence
asked by rita 
Math
The curve y=x^33x^28x+4 has tangent L at point P (1,8). Given that the Line M is parallel to L and is also a tangent to Q show that the shortest distance between L and M is 16 root 2 Thanks
asked by Jodis 
science
what does 4s^2 mean
asked by john