01/11/17

How do you solve this multiple choice calculus problem?
A particle moves on the x-axis in such a way that its position at time t is given by x(t)=3t5 - 25t3 +60t. For what values of t is the particle moving to the left? A) -2<t<1 only B)... more
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11/08/16

A soda can rolls off a table top and lands 0.225 m away 0.416 s later. How tall was the table?
this probelm was part of projectile motion section
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11/08/16

Work And Energy 4
A skier of mass 62 kg is pulled up a slope by a motor-driven cable.(a) How much work is required to pull him 80 m up a 30° slope (assumed frictionless) at a constant speed of 3.3 m/s? J (b) What... more
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11/08/16

Work And Energy 3
A child and sled with a combined mass of 43.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 4.00 m/s at the bottom, what is the height of the hill?
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11/08/16

Work And Energy 2
A shopper in a supermarket pushes a cart with a force of 31 N directed at an angle of 25° downward from the horizontal. Find the work done by the shopper as she moves down a 42 m length of aisle.
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10/17/16

Iodine-131 has a half-life of approximately 8 days. After 56 days one has 0.500 g of iodine-131 remaining. Determine the starting mass of iodine-131.
i would like to see work being shown?
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10/15/16

Im trying to figure out the answer
Now consider whether this relationship holds true for a process more complex than simple gas speed: diffusion. Use the molar masses of NH3 and HCl to calculate the predicted ratio of their... more
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09/17/16

more word problem issues
A collection of nickels, dimes, and quarters consist of 12 coins with a total of $1.25. If the number of dimes is equal to the number of nickels, find the number of each type of coins.
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09/15/16

Rock age of uranium and carbon
Determine the age of a rock containing .065g of 238uranium(Half-life: 4.5x10^9) and .042 of 206Carbon. (Assume all lead came from U). Enter answer in scientific notation and with correct sig figs. 
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09/05/16

At local noon the sun is 4 degrees west of a certain star, the next day at local noon what will be the position of the sun relative to the same star?
The possible answers are: in front of the star 4 degrees east of the star 4 degrees west of the star 3 degrees west of the star 3 degrees east of the star
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09/05/16

What time will Person X and Y have the city cleaned up of crime by if they work together?
A person X can clean up all the crime in the city in a 10 hour work shift. Person Y can clean up all the crime in the city in a 12 hour work shift. If Person Y starts working at 9am and Person X... more
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09/05/16

What is the pressure in pascals if the pressure is equal to 380 torr?
What is the pressure in pascals if the pressure is equal to 380 torr?Useful Equations:1.00 atm = 101300 Pa1.00 atm = 101.3 kPa1.00 atm = 14.7 psi1 in. = 2.54 cm1.00 atm = 760 mmHg1.00 atm = 760... more
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09/02/16

Kinematics (physics with calculus)
A rocket traveling upward has a height above the ground given by x(t)=At^2-Bt^3, where A and B are positive constants. What is the maximum upward velocity the rocket will reach, in terms of A and B?
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08/25/16

A boat enters the harbor at 14.1 m/s. Call this the positive direction. It needs to come to rest near the docks to begin docking. It is 62 m to the docking area
acceleration physics question 
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08/24/16

A rectangle game board measures 126 cm by 90 cm. The game board is divided into small squares of equal size.
Find the longest possible length of the side of one of the small squares.  And find the least number of squares the game board can be equally divided into.
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08/14/16

Let f(x)=4.1sin(x)+2.4cos(x). What is the maximum and minimum value of this function?
Let f(x)=4.1sin(x)+2.4cos(x). What is the maximum and minimum value of this function?         note: I tried the last answer and it ended up being incorrect on the wamap system        
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08/08/16

Triangle A has a perimeter of 12 and an area of 6. Triangle B has an perimeter of 60 and an unknown area. What is the area?
the question was on my pactice shsat est. the chouce of 30 was not given. Thnak you fr the help.
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08/08/16

What types of atoms are not missing any electrons in their outermost orbit shell?
I am stuck on this question.
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07/27/16

Write the complex number z=(1-sqrt3i)^14 in polar form: z=r(costheta+i sin theta) where r = and theta =
Please help ME
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07/27/16

What is the solution set?
y=log(x+2) y=x^2   What is the solution set, round to four decimal places.
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07/19/16

Write the chemical reaction equations to correspond to the written descriptions. PLEASE HELP!
a) The formation of mercury(I) chloride precipitate from mercury(I) and chloride ions.   b) The dissolving of lead(II) chloride solid.c) The formation of the diammine silver complex ion from... more
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07/17/16

finding the molecular formula
An unknown compound has a formula of CxHyOz. You burn 0.1523 g of the compound and isolated 0.3718 g of CO2, and 0.1522 g of H2O. what is the empirical formula of the compound? If the molar mass is... more
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07/12/16

A square has a side of x + 13. the area of the square is 441. Find x
find the area of the square 
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07/10/16

Which of the following compounds when placed in water would produce an electrically conductive solution?
-FeSO4 -ZnBr2 -Mn(OH)2 -CsBr -CCl4   Please select all that are true! 
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06/29/16

Dad can wash the car by himself in 50 minutes. Junior can wash it by himself in 70 minutes. How long would it take for Dad and Junior to wash the car if they w
Dad can wash the car by himself in 50 minutes. Junior can wash it by himself in 70  minutes. How long would it take for Dad and Junior to wash the car if they worked together?
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