Arturo O.

Electri Charges

04/05/18

two point charges q1=20μC and q2=25μC are placed at (-1,1,1)m and (3,1,-2)m , with respect to co-ordinate axes. find magnitude and unit vector along force on q2

question is from class 12 physics cbse board

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Math Word Problem

04/05/18

science question about carbon

The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 67.7% of their carbon-14. How old were the bones at the time they... more

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Other

04/05/18

f(x)=5x^2+4x. how do i find the value(s) of x when f(x)=1

if f(x)=5x^2+4x how is it gonna equal 1. i really need help please

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Math Help

04/05/18

Think about the pattern and then answer the question

1 2 4 8 16 32 _ _ _ _ what will be the number be in four more steps?

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Math

04/04/18

k divided by 11 is 7.

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Algebra 2 Sem 2

04/04/18

Evaluate the following expression. You should do this problem without a calculator. e^In 6

Evaluate the following expression. You should do this without a calculator. A.3 B.1 C.0 D.6

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Physics

04/04/18

A ball is thrown with an initial velocity of 120m/s at an angle of 300 above the horizontal. If it is thrown off of a cliff that is 100m high

A ball is thrown with an initial velocity of 120m/s at an angle of 300 above the horizontal. If it is thrown off of a cliff that is 100m high How long will it take to hit the ground? (ans: 13.7s)

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Math/algebra Ii

04/04/18

The equation models the height h in centimeters after t seconds of a weight attached to the end of a spring that has been stretched and then released.

h=7 cos (pi/3 t) a. Solve the equation for t.b. Find the times at which the weight is first at a height of 1 cm, of 3 cm, and of 5 cm above the rest position. Round your answers to the nearest... more

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Homework Due Tomorrow

04/04/18

A 100 point test consists of 2 point questions and 5 point questions. There are a total of 44 questions on the test. What is total of questions of each type

Need help

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Hw1

04/04/18

homework problem

What is the velocity of an electron having a de Broglie wavelength that is approximately the length of a chemical bond? Assume this length to be 1.2*10–10m.

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Hw1

04/04/18

homework problem

The energy required to dislodge electrons from sodium metal via the photoelectric effect is 275 kJ/mol. What wavelength (in nm) of light has sufficient energy per photon to dislodge an electron... more

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Algebra Graphs

04/04/18

Find the x-intercept of the line ?

-4x-2y=16

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Multiplying Fractions

04/04/18

Who is correct jessie or lamar ? If u multiply 7/9 and 4/9

Lamar and jessie are multipying 7/9 × 4/9 .Lamar says the product will be less than 7/9 . Jessie says the product will be less than 4/9 Who is correct ? Explain your reasoning

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Math

04/04/18

How much furniture di i have to sale to make 4000 a month on a 5% commission

How much should i sale to make 4000 a month on a 5% commission

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Math Word Problem

04/04/18

The number of acres Problem

(a) From its resting position, how long does it take the pendulum to swing one direction, then the other, and then return to its resting position?(b) What is the pendulum’s maximum displacement?(c)... more

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Other

04/04/18

What is the product of the roots of the equation 5x^2-25+10x?

plz help soon.

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Daltons Law Of Partial Pressure

04/04/18

What is gas A’s partial pressure?

A balloon has three gases In it, gas A, gas B, and gas C. The total pressure is 5430 torr. If gas B’s partial pressure is 2700 torr and gas C’s partial pressure is 950 torr, what is gas A’s partial... more

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Algebra 2 Inverse Variations

04/04/18

question is in the description

The variable z is directly proportional to x, and inversely proportional to y. When x is 9 and y is 6, z has the value 19.5. What is the value of z when x= 14, and y= 11?

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Dalton’s Law Chemistry

04/04/18