07/27/16

What is the length in scientific notation ?
The diameter of a hydrogen atom is about 5x10^-11 meter. Suppose 8.4x10^8 hydrogen atoms were arranged side by side in a straight line. Multiply these numbers to find the length of thus line of... more
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07/27/16

What is the largest/longest container you will need based on the human range of hearing? Is this a reasonable jug size?
You decide to create a jug and bottle band where you want to play the bottles and jugs by blowing across the tops of the bottles to generate sounds. What is the largest/longest container you will... more
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07/26/16

Livestrong has many products. By admitting that he lied about doping, can Livestrong sue Armstrong for “infringement” or “disparagement”
LiveStrong has a number of products that it has trademarked and copyrighted, including a line of “Livestrong” exercise bikes. By admitting that he lied, can Livestrong sue Armstrong for... more
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07/25/16

A resistor with color bands of red, red, red, and silver is placed across a 5-volt source. What is the expected range of current
need answers soon 30 mins  
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07/24/16

With any type of lens, the object and image?
A. will be the same size. B. may be on the same or opposite sides of the lens. C. must be on opposite sides of the lens. D. can be virtual or real.
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07/24/16

To say that light is monochromatic is to say that the light is?
A. iridescent. B.in phase. C. of a single frequency. D.coherent.
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07/24/16

The radiation curve of sunlight peaks in the
A. yellow-green part of the spectrum. B. red part of the spectrum. C. white. D. orange part of the spectrum.
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07/24/16

The function of a lens is to change the
A. refraction of light rays or waves. B. absorption of light rays or waves. C. frequencies of light in various directions. D. direction of light rays or waves.
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07/24/16

A diffraction grating commonly
A. produces multiple reflections. B. converges light of different colors. C. disperses light into its component colors. D. spreads light according to amplitude.
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07/24/16

Polarization is a property that illustrates
A. the particle nature of light. B. the wave nature of light. C. both the particle and wave nature of light. D. none of the above
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07/23/16

Kinematics question please help
A particle moves on the x axis. It starts from rest at the origin O and moves in the positive direction with constant acceleration of 2 m/s^2 until its velocity reaches 10 m/s. It then continues... more
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07/23/16

if a glass and mercury have the same coefficient of expansion, it is still possible to construct a mercury thermometer? justify your answer
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07/23/16

Kinematics question
A helicopter, initially at rest on the ground, rises vertically with constant acceleration. When it is at height of 60 m it's upward speed is 5 m/s. When it is at height of 240 m and still rising ,... more
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07/22/16

How much work must be done to move charge Q2 = 2.0 x 10-6 C .....
How much work must be done to move charge Q2 = 2.0 x 10-6 C from A to B? The other charged object has a charge Q1 = 8.0 x 10-6 C.                                ... more
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07/22/16

Kinematics question
Two particles P and Q moves in the positive direction on the x axis, P with constant acceleration 2 ms^-2 and Q with constant acceleration of 1 ms^-2. At time t=0, P is projected from the origin O... more
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07/20/16

Sinusoidal function
The propeller of a boat at dock in the ocean will rise and fall with the waves. On a particularly wavy night, the propeller leaves its resting position and reaches a height of 2m on the peaks of... more
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07/20/16

A wire is bet in the form of semi circular ring of radius 0.9m and current 1amp and magnetic induction is n×10^-7tesla find value of n?
I need the answer immediately pls urgent
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07/19/16

A distance and time query
A freight train leaves the station at 9am. an amtrak train leaves the same station 6 hours later at 3pm. the freight train travels 70mph slower than the amtrak train. if the amtrak passes the... more
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07/18/16

graph area
Suppose that you are driving and you gradually accelerate from 50 mph to 70 mph over a two-hour period. Your speed (in miles per hour) hours after you start accelerating can be modeled by the... more
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07/18/16

algebra word problems
A box had twice as many grapes as a basket. Once 2 kilograms of grapes were added to the basket, it contained 0.5 kg more than the box. How many kilograms of grapes are in the basket now?
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07/17/16

the part or title of the experiment is determinat of molar heat of reaction of a precipitat reaction
when performing an experiment to determine the molar heat of a reaction, a student spilled three fourth of the Fe(NO3)3 solution on the lab bench. The student used the remaining fourth to complete... more
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07/17/16

Finding trig functions
Find the values of tan(thetha) =3/4 and sin(thetha)<0    What I dont understand is the  sin(thetha)<0 
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07/17/16

calculate emf developed in a armature of a 2 pole dc generator whose armature has 280 conductors and is revolving at 1000 rev/min.the flux per pole is 0.03wb
calculate emf developed in a armature of a 2 pole dc generator whose armature has 280 conductors and is revolving at 1000 rev/min.the flux per pole is 0.03wb
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07/17/16

an airplane flying at 2,850m above the ocean measures the angles of depression of each end of an island to be 43 degrees and 52 deg. what is the length of the i
can't answer please help me
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07/16/16

Let a fuzzy set be A= 0.1/1 + 0.6/2 +0.4/3 +0.7/4+0.5/5+0.6/6+0.9/7+1.0/8+0.7/9+0.1/10 then find scaler cardinality and fuzzy cardinality of A
Let a fuzzy set be A= 0.1/1 + 0.6/2 +0.4/3 +0.7/4+0.5/5+0.6/6+0.9/7+1.0/8+0.7/9+0.1/10 then find scaler cardinality and fuzzy cardinality of A
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