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October 21, 2012
A uniform horizontal rod of mass M and length l rotates with angular velocity w (omega) about a vertical axis through its
2 answers
asked by
Daniel
7,759 views
If the standard enthalpy of combustion of octane, C8H18(l) is -5471 kJ/mol, calculate the enthalpy change when 1.00 kg of octane
1 answer
asked by
Sam
7,002 views
The drawing shows a jet engine suspended beneath the wing of an airplane. The weight W of the engine is 12000 N and acts as
1 answer
asked by
Annie
6,677 views
I have a question about this one
2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases?
4 answers
asked by
alex
6,212 views
The gravitational field strenght on the moon is 1.63N/kg. If a rock on the moon weights 2000N, how much does the same rock weigh
1 answer
asked by
Jason
4,928 views
A footballl is thrown directly toward a receiver with initial speed of 18.0 m/s At an angle of 35.0 degrees above the
1 answer
asked by
Mollie
4,302 views
A 150N block rests on a table. The suspended mass has a weight of 73N.
a) What is the magnitude of the minimum force of static
2 answers
asked by
Peter
3,655 views
Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g
Mass (after reaction): test tube + HCl(aq) + stir bar +
2 answers
asked by
Karina
3,068 views
Suppose that a stable element with atomic number 119, symbol Wr, has been discovered.
(a) Write the ground-state electron
2 answers
asked by
Lily
2,940 views
A child has a temperature of 101◦F.
If her total skin area is 13 m2, find the en- ergy loss per second due to radiation, assum-
2 answers
asked by
Lee
2,825 views
#1
For what positive numbers will the cube of a number exceed four times its square? #2 For what positive numbers will the cube
1 answer
asked by
Rebekah
2,777 views
A sample of n _ 11 scores has a mean of M _ 4. One person with a score of X _ 16 is added to the sample.
What is the value for
2 answers
asked by
Sharon
2,647 views
explain which is more accurate: measuring to the nearest millimeter or to the nearest eighth of an inch
5 answers
asked by
Taylor
2,461 views
At the halftime show, a marching band marched in formation. The lead drummer started at a point with coordinates (–2, –5)
2 answers
asked by
Delilah
2,322 views
MegaMart collects a sales tax equal to 1/16 of the retail price of each purchase and sends this money to the state government.
a.
9 answers
asked by
Cassidy
2,242 views
A positive charge of 3.50 µC is located in an electric field of intensity 3.00 N/C directed toward the south. Find the
2 answers
asked by
john smith
1,953 views
a 0.2kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30 m/s and rebounds up at 25 m/s.
1 answer
asked by
Jazmin
1,934 views
Calculate the theoretical yield in moles of Fe(C5H7O2)3 for this experiment. Record this number on your data sheet.
Calculate the
1 answer
asked by
Anonymous
1,922 views
1. Because there was a reawakening of interest in art, literature, and science between 1300 and 1600, it is fitting to call this
15 answers
asked by
all about me
1,863 views
the sclae on a map is 1in:25mi. You measure 6.5in,between two towns what is the actual distance
5 answers
asked by
Taylor
1,813 views
when is the absolute value of a difference equal to the difference of the absolute values? Explain
1 answer
asked by
Taylor
1,802 views
Graph the following function. Find and state the domain, intercepts, asymptotes, intervals of increase and decrease, local
1 answer
asked by
Devin
1,794 views
whatis the unit price of 40 ounces for $12
1 answer
asked by
kyla
1,611 views
the following acid—base neutralization reaction
HNO3 (aq)+ KOH (aq) --KNO3(aq) + H2O (I) What is the molarity (M) of an HNO3
1 answer
asked by
Tasha
1,516 views
When 10.0 g of ammonium nitrate (molar mass= 80 g/mol) are dissolved in 1.00 L of water in a bomb calorimeter with a heat
1 answer
asked by
Sam
1,493 views
If the standard enthalpy of combustion of octane, C8H18(l) is -5471 kJ/mol, calculate the enthalpy change when 1.00 kg of octane
2 answers
asked by
Sam
1,471 views
A classroom has a floor area of 600 square feet. What is the floor area of the classroom in square meters? describe three
0 answers
asked by
Chelsea
1,439 views
1. Two concentric conducting spherical shells have radii of 0.145 m. and 0.215 m. The inner sphere bears a charge of -3.00E-08
2 answers
asked by
andrew
1,365 views
Solve:
3 log 10^x = 4.2 the 10 is underneath the log I got a weird number in scientific notation. 2.511... X 10^9
1 answer
asked by
Sam
1,358 views
It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the
2 answers
asked by
Alison
1,327 views
How many five digit numbers can be formed from the set of nine numbers (0,1,2,3,4,5,6,7,8) if no number is repeated and no
2 answers
asked by
Carol
1,320 views
Two moles of Mg and five moles of O2 are placed in a reaction vessel, and then the Mg is ignited to produce Mg (F.W.= 40.31
2 answers
asked by
Shelby
1,319 views
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics.
1 answer
asked by
Roseanne
1,316 views
At 1 atm, how much energy is required to heat 49.0 g of H2O(s) at –12.0 °C to H2O(g) at 169.0 °C?
2 answers
asked by
yas
1,309 views
Please show me how to work!
Ethane, C2H6(g) can be made by reaction of hydrogen gas with acetylene, C2H2(g). the standard
1 answer
asked by
Sam
1,304 views
A capacitor has a charge of 5 µC when charged by a potential difference of 1.5 V. What is the capacitance of the capacitor?
3.3x
1 answer
asked by
Derp
1,298 views
A object-spring system undergoes simple harmonic motion with an amplitude of A. Does the total energy change if the mass is
1 answer
asked by
roro
1,261 views
If the standard enthalpy of formation of PH3(g) is +5.4 kJ mol-1, calculate the reaction enthalpy for
2PH3(g)--->2P(s)+3H2(g)
1 answer
asked by
Sam
1,225 views
A ski starts from rest and slides down 22 degree incline 75 m long.If the coefficient of friction is .090 what is the ski's
0 answers
asked by
SP
1,205 views
The standard enthalphies of formation of ozone, O3(g), and oxygen atoms are +142.70 and +249.17 kJ/mol. Calculate the reaction
1 answer
asked by
Sam
1,186 views
A certain 0.92 kg object will reach terminal velocity after 0.75 seconds. What is the speed of its terminal velocity and what is
0 answers
asked by
Lauren
1,186 views
A mixture of C3H8 and C2H2 has a mass of 2.0g . It is burned in excess O2 to form a mixture of water and carbon dioxide that
1 answer
asked by
Crystal
1,169 views
if rock A is dropped from a cliff and rock B is thrown downward off the cliff, which of the two has a greater velocity?
1 answer
asked by
Barbara
1,135 views
A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 6.7 m/s. The coefficient of kinetic
1 answer
asked by
George
1,109 views
During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.11 s, how high does it rise?
2 answers
asked by
Kayla
1,089 views
Suppose that a stable element with atomic number 119, symbol Wr, has been discovered.
(d) What would be the most likely charge of
3 answers
asked by
Dave
1,089 views
What is the gravitational potential energy of a 5kg object resting 3m above the ground?
1 answer
asked by
Drake
1,077 views
Beth, a construction worker, attempts to pull
a stake out of the ground by pulling on a rope that is attached to the stake. The
2 answers
asked by
AJ
1,060 views
Two resistors 10 Ω and 5 Ω are connected in parallel across a 15 V battery. What is the potential difference across the 10 Ω
0 answers
asked by
Herp
1,056 views
The time needed for a water wave to change from the equilibrium level to the crest is 0.4185 s.
What fraction of a wavelength is
2 answers
asked by
Aj
1,055 views
An arrow is launched upward with a velocity of 54 feet per second from the top of a 75 foot building. What is the maximum height
1 answer
asked by
Randi
1,053 views
Consult Multiple Concept Example 10 in preparation for this problem. Traveling at a speed of 18.7 m/s, the driver of an
1 answer
asked by
Daman
1,037 views
Hey guys stumped on this one \HELP PLEAZE A.S.A.P.
minimize p= 15x +18y subject to x+2y<=20 3x + 2y>= 36 x>=0 y>=0
0 answers
asked by
garnel
1,009 views
The following chart shows the fraction of students who enjoy baseball, basketball, football, soccer, and swimming in the 7th
3 answers
asked by
Bethany
992 views
Joey has a toy car that is a 1:64 scale model of an actual car. (In other words, the length of the actual car is 64 times as
1 answer
asked by
Elizabeth Barnes
991 views
A man claims he can safely hold on to a 14.20 kg child in a head-on collision with a relative speed of 132. mi/h lasting for
0 answers
asked by
Anonymous
981 views
A international phone call cost a fixed amount for the first minute and a certain rate per each additional minute. If a 7 minute
1 answer
asked by
Jamese
974 views
A baseball coach shouts loudly at an umpire standing 3.6 meters away.
If the sound power produced by the coach is 2.2×10−3 W,
0 answers
asked by
Aj
972 views
What property must a substance have if u want to use the substance to make an aqueous solution?
Thank you
2 answers
asked by
Seastone
967 views
Use principles of atomic structure to Explain why in aqueous solution,
(a) potassium forms 1+ but not a 2+ ion (a) Ti3+ is
2 answers
asked by
Lily
948 views
Suppose a shipment of 500 machine parts contains 62 defective and 438 non-defective machine parts. From the shipment you take a
0 answers
asked by
laura
943 views
4. After being told that she is being punished for lying, a child responds by telling her mother that she also lied. This
2 answers
asked by
Sam
940 views
Based on the following chemical equation answer the question below show all your calculation
The balanced chemical reaction of
3 answers
asked by
Tasha
938 views
1. Because there was a reawakening of interest in art, literature, and science between 1300 and 1600, it is fitting to call this
16 answers
asked by
all about me
932 views
The force shown in the force vs. time diagram in the figure below acts on a 1.10 kg object. Find:
(a) the impulse of the force
0 answers
asked by
Anonymous
928 views
A person wants to push a lamp (mass 7.2 kg) across the floor, for which the coefficient of friction is 0.23. Calculate the
0 answers
asked by
Olivia
912 views
a skier moving at 15 m/s down a 20 degree slope encounters a region of wet snow of coefficient of friction is 0.8. how far down
2 answers
asked by
Jazmin
911 views
A wind is blowing directly from east to west. The pilot of a small plane finds that if he points the nose of the plane 30.0 °
0 answers
asked by
Anonymous
903 views
When is the absolute value of a difference equal to the difference equal to the difference of the absolute values? Explain
1 answer
asked by
Taylor
893 views
Two positive charges of 6 �C are separated by a distance of 50 cm in air. What is the electric field strength at the midpoint
1 answer
asked by
Derp
882 views
Can you check my answers please?
1. Which continents do not cross the equator? North America, Europe, Australia, and Antarctica
1 answer
asked by
Reed
870 views
A child has a temperature of 101◦F.
If her total skin area is 13 m2, find the en- ergy loss per second due to radiation, assum-
0 answers
asked by
Lee
865 views
Nurse erika needs to prepare 12 liters of a 10% saline solution. The stockroom only has 7 % and 15% saline solutions. How much
1 answer
asked by
sh
861 views
how do the names of covalent compounds differ from the names of ionic compounds?
1 answer
asked by
Boo Boo
857 views
Input. Output
12. 10 16 32. 62. 35 70. 39 86 What is the rule I am in 5 th grade and have no clue
1 answer
asked by
Lily
854 views
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following.
A: 11.2g
1 answer
asked by
Will
852 views
For y= 2x squared + x - 1 the x-intercepts and the turning point respectively are?
1 answer
asked by
Charlie
845 views
Can you check my answers please?
1.In what hemispheres is Africa located? Northern, Southern, Eastern, and Western 2. What is the
1 answer
asked by
Reed
827 views
6.
In which quadrant is the point (x, y) located if x is negative and y is positive? (1 point) II III IV I At the halftime show,
4 answers
asked by
Delilah
821 views
A coffee dealer mixed 12 pounds of one grade coffee with 10 pounds of another grade of coffee to obtain a blend worth $54. He
2 answers
asked by
Jamese
815 views
MegaMart collects a sales tax equal to 1/16 of the retail price of each purchase and sends this money tp the state government.
a.
7 answers
asked by
Cassidy
813 views
A certain weak base has a Kb of 9.00 × 10-7. What concentration of this base will produce a pH of 10.34?
1 answer
asked by
Kelly
807 views
A skyrocket explodes 77 m above the ground. Three observers are spaced 106 m apart, with observer A directly under the point of
0 answers
asked by
Aj
792 views
A force of 50 N accelerates a 5.0 kg block at 6.0 m/s2 along a horizontal surface.
(a) What is the frictional force acting on the
1 answer
asked by
HanuPhysics
791 views
What is the mass of a paratrooper who experiences an air resistance of 400 N and an acceleration of 4.5 m/s2 during a parachute
2 answers
asked by
HanuPhysics
782 views
A jar contains six red marbles, four green marbles and five yellow ones.
a) determine the number of ways in which any thee
0 answers
asked by
Carol
778 views
explain why a precipitate forms when silver nitrate solution is added to sodium chloride solution?
2 answers
asked by
vicky
772 views
Solve
7^3x=623
4 answers
asked by
Sam
772 views
Radius of earth 3,959 miles
Space shuttle orbits 200 miles above earths Surface Space shuttle completes 220 degrees of a
1 answer
asked by
Chris
764 views
a flight attendant pulls her 70 kg flight bag in an airport terminal holding the handle 50 degrees above the horizontal. she
0 answers
asked by
chad
761 views
Calculate the de Broglie wavelength associated with a body of mass 1.5 kg moving with a velocity of 100m/s.
1 answer
asked by
Sparkle
754 views
Calculate the number fo moles of NaOH(aq) needed to react completely with 125 mL fo 6.00 M H2SO4(aq)
1 answer
asked by
Sam
748 views
What property must a substance have if u want to use the substance to make an aqueous solution?
Grade- 9
3 answers
asked by
Seastone
740 views
A block of mass 0.86 kg is suspended by a string which is wrapped so that it is at a radius of 0.061 m from the center of a
0 answers
asked by
Emily
739 views
Laird Company sells coffee makers used in business offices. Its beginning inventory of coffee makers was 200 units at $41 per
0 answers
asked by
Meg
726 views
A spiiner was spun 16 times. The results are shown in the table below.
yellow = 5 white = 4 red = 0 blue = 2 green = 2 orange = 3
2 answers
asked by
kyle
721 views
An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW?
8.1 Ω 1.4 Ω 81 Ω 14 Ω Both A
1 answer
asked by
Herp
718 views
4.
Point E is located at (–2, 2) and point F is located at (4, –6). What is the distance between points E and F? (1 point)
2 answers
asked by
Delilah
715 views
joe weighs 650N. how much work does he do if he climbs 4m up a a rope?
1 answer
asked by
Brenna
706 views
is the set of positive intgers the same as the set of nonegative integers? Explain?
1 answer
asked by
Taylor
701 views
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