02/14/18

How can astronomers deduce that there is a second star in a star system?
 They can look for the brightness of the star becoming periodically lighter and darker.They can look for a wobble in the position of a star.They can look at the star's gravitational pull on... more
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02/14/18

A basketball bounces off the ground. The balls height y (in feet) after t seconds can be modled by y=-16t^2+40t. How many seconds is the ball in the air?
How many seconds will it take to reach its maximum height? How do you know that
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02/14/18

Tanya pulls on a 2 kg rope with a force of 100 N. Keith pulls in the opposite direction with a force of 80 N. What is the acceleration of the rope? Does it
how do you find the acceleration of the rope?
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02/14/18

To obtain political rights, plebeians formed their own assembly called
 To obtain political rights, plebeians formed their own assembly called
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02/13/18

A weight lifter lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest.what potential energy do weights now posses
What is answer
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02/13/18

88d+80 What is the answer/or i need help
 i don't understand how to do it can u please explain step by step
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02/13/18

Graphing techniques
 The height of a rocket after T seconds is given by the function H(t) =18t-3t^2.  And how many seconds the rock in attaIns maximum height?
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02/13/18

How do I do this? For f(x, y), find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 simultaneously. f(x, y) = 36 x + 6 y + xy
For f(x, y), find all values of x and y such that fx(x, y) = 0 and fy(x, y) = 0 simultaneously.f(x, y) = 36x + 6y + xy
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02/13/18

Parallel , perpendicular or neither
4x+ 3y =9 4y=5y-12
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02/13/18

If you were a pagan in the Greco-Roman world:
How would you show why Christianity was an inferior religion? ALSO, if you were a Christian, how would you show that paganism was an inferior religion?
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02/13/18

can you help me with math please. I do not know where is the rational numbers
choose the rational numbers −9.507/2sqrt(7)2.71−π3.14100−4
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02/13/18

In an equation, you can use any letter as a variable
I need help
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02/13/18

How do I solve the integral from negative infinity to infinity of f(x,y)dx ?
This is for a schrodinger's equation problem (normalizing a waveform) but I haven't taken calculus 3 and when I search online I get results for solving double integrals, which doesn't seem to be... more
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02/13/18

19.) Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.8 m/s2.
A 6.8 N net force is applied to a 1.7 kg mass. What is the object's acceleration?Express your answer using two significant figures.
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02/13/18

16.) Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.8 m/s2.
A net force of 3.5 N gives an object an acceleration of 15 m/s2 . What is the mass of the object?Express your answer using two significant figures.
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02/12/18

Chemistry protons neutrons and electrons
How many protons, neutrons, and electrons are present in an atom of sulfur -32?
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02/12/18

centripetal accleration( v^2/r) or (w^2.r) so it is directly or inversely proportional to radius please answer dont ignore useful knowledge
And what is answer please post thanks 
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02/12/18

Find f '(a). f(x) = 3 − 6x
find f'(a)=
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02/12/18

When Polonium-218 undergoes alpha decay, it produces lead (Pb). Write a balanced equation for this reaction
This is a question for my scien class and it is about the periodic table and stuff like that.
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02/12/18

Sum of two numbers is 53 and the difference is 3
Sum of two numbers is 53 and the difference is 3
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02/12/18

Write the exact answer using base-10 logarithms
4x-7=15-10x  
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02/12/18

Do Tachyons really exist?
I am shocked after knowing about Tachyons (Faster than light). Is that means Einstein's Theory of Relativity is wrong.....
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02/12/18

help me with this question please
According to Newton's Second Law of Motion, the force acting on an object varies directly with the object's acceleration. Suppose that a force of 14 N results in an acceleration of 7 /ms2. If the... more
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02/12/18

What happened at the Mass Suicide of Masada?
What happens at the Mass Suicide of Masada? What did the men do to be able to “die with honor?”
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02/12/18

What was Hellenization and what events led to the Maccabean revolt?
What was Hellenization and what events led to the Maccabean revolt?
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