# Posts by Unknown

Total # Posts: 1,272

PHYSICS.
5. A motor lifts a 12 kg mass to a height of 15 m at a constant velocity in 3.5 s. a) Find the power b) If the motor is only 35% efficient find the input energy.

Physics
a motor lifts a 12 kg mass to a height of 15 meters at a content velocity in 3.5 seconds. a) find the power b) if the motor is only 35% efficient find the input energy

Science
You guys are all dumb maybe instead of cheating online maybe go back to you lessons and study

Science
i do not know

math
Please Don't spam, don't submit to many question at the same time in different post! We try are best to answer. Thank You! Unknown

Introduction to oPsychology
When you drive down the street listening to your car's radio, you may not think about the fact that the music is received by the radio's antenna. Which part of the human neuron serves the same purpose as asn antenna-that is, receiving information?

english and languge arts
HURRY I NEED HELP!!!!! where should you insert a colon in this sentence? Interview the following people Dave, barb, Jose, and Mary Ann 1.after following 2. after people 3.after Jose 4. no where i said no where but i don't know

Science
All are correct, thank you

H.E.L.P
Josslyn is right.

Math
Random Sampling: In random sampling, each item or element of the population has an equal chance of being chosen at each draw

Science help ASAP
All are right.

math
Yes they are correct.

Thanks for being honest

science
2 is A

Algebra
6/3=2 2 hrs

Math
The surface area of a prism is 54 square inches. What is the surface area of a similar prism that is smaller by a scale of 1/3? My answer- 6

Math
Can you check my answer, I got 5.92983333

Math
Convert- 94 gal/h=______L/min

Math
Ms.Sue wouldn't it be 192?

Math
Can someone help me with this? Convert: 48lb/gal=____oz/qt

algebra 1
the fraction is mission

Science
Tris is right 100%

social studies
then what are the real answers

Science
How many moles of O2 are needed to make 1.98 moles of SO3?

science
how many moles of SO2 are needed to make 3 moles of SO3?

CALCULUS ECONOMICS
WRONG s is not -300

S.S (DAMON)
so whats number 13?????

S.S.
kyan is correct i got 100%

Probability
1. 0.0384 (5!/5^5) 2. ???

Probability
c) 13/24

Probability
a) 3/5 b) (2/5)/(3/5)=2/3

Probability
pataka rana ug answer.. 1/5 + 2/5=4/5? sure ka ana?

social studies
Thank you

S.S
this is the answers 1.d 2.c 3.a just got a 100% percent

Geometry
??????????????????

Math
oops the percent it 18.4 not 18.45! Sorry

Math
Oh! Ok let me try it by dividing only once.

Math
It's a percent proportion- is/of = %/100

Math
Also~ 18.45 of 880 is what number? My answer- 1.6192

math
I got .9052 the 2nd time

math
62% of 146 is what number? My answer- 23548.38

Science
Thank you this helps a lot!

Science
How are volcanoes formed?

science

science
What is a mountains origin?

math
i don't know

math 2
Then answer is four because there are 1760 miles in a yard and you would do 1760 divided by 440 to give you 4 as your answer thanks for your time person unknown :-)

S.S
Damon you better be right... or there will be consequences...

social stud. quiz --- check my answers!!!
Number nine is A.

Math Help

science
a stone is dropped down a well.it hits th surface of the water after 2seconds.find the depth of water from point where the stone was dropped

Civics
Ok thank you very much!:D

Civics
So it establishes that the court cannot/will not change the understanding of the law once made unless the decision before an be shown wrong/ in error?

Civics
What role do precedents play in our legal system? Help would be appreciated!! :-)

Damon... you better be right... or there WILL be consequences.

math(CHECK ASNWERS)
I'm a teacher in a tiny school district and most of my students don't show there work. You answer's are correct keep the good work!

POL 201
I need answers for week 2 quiz.

science help plzzz
100% thanks!

Physics
One student generates a short, loud sound of wavelength 0.7576 m. Another student, who is 100 m away, hears the sound exactly 0.300 s later. What is the frequency of this sound? Please help

A ball of Styrofoam (ρ = 100 kg/m3) is totally submerged in water. The ball has a mass of 300.0 g (it could be a pretty big block). What is the volume of the ball? If a string holds the ball when it’s in the water, what’s the tension in the string?

Social
What are the for and against arguments for the right to vote?

Well it's a two part system, so the mass is a force that the other mass has to overcome in order to move

Okay, so I've figured this much out on my own, I just need help with the next part. It's a two block system with a friction of .20 a hanging mass of 7.5 kg and mass on the table at 10 kg. I got 3.08 m/s^2 for the acceleration and I got 22.8 N for the tension in the ...

science
Is a bluegill both a decomposer and consumer?

Yes, the rope pulls all of the blocks to the right. Thank you so much for your help.

1. Which of the following are conserved in a totally inelastic collision? Only momentum Only kinetic energy Both momentum and kinetic energy Neither momentum nor kinetic energy <--- It depends on the objects. 2. Two skaters stand face to face. Skater 1 has a mass of 55 kg, ...

I got 225 N/m is this correct?

physics
8. A spring is compressed a distance of 0.15 m from its rest position and held in place while a ball of mass 0.150 kg is placed at its end. When the spring is released, the ball leaves the spring traveling at 9.0 m/s. What is the spring constant? 540 N/m 450 N/m 60 N/m 225 N/m...

Physics help
I'm trying to calculate the tension in a rope. The two ropes are holding up a picture frame that is 100N, each rope is at a 45 degree angle. I'm trying to find the value of the tension of the 1st rope. Please help

help!!!!
8y-6

science help!
A satellite is placed in orbit 100 km above the surface of the earth (radius = 6370 km, mass = 5.98 x 1024 kg). If the satellite has a mass of 1500 kg, what is the force of gravity acting on it?

A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change? It will double. <---- It will be cut in half. It will not change. It will quadruple. It will be...

maths
Solve 5x + 3y = 4 3x + 4y = 9 Just a bit confused Please help

Science help.

SS
cowgirl girl is right

physics
A graduated cylinder is inverted in a very large bucket of water. The depth of the water in the container is 6 m and the top of the bucket is open to the air in the room. The mouth (bottom) of the graduated cylinder is 4 m above the bottom of the container. Due to a pressure ...

math

math
how did u ever get 7/8?????

Math!
Really babe?

Engineering
plz... post all the answers you know so that other people will be benefited.....

Math
I need help with this question

Physics Classical Mechanics
vm = 2.213594362 Q = 0.278168471

Physics Classical Mechanics
M/(pi*r^2*(l-h) + 4*pi*R^3/3)

Physics Classical Mechanics
f = 1/(2*pi)*sqrt((2*g)/L)

Physics Classical Mechanics
T = 2*pi*sqrt((3*M)/(2*k))

Physics Classical Mechanics
(a)NL = (m*g*(1-(2*x)/d))/2 NR = (m*g*(1+(2*x)/d))/2 (b)(-2*mu_k*g*x)/d (c)x_0*cos(sqrt((2*mu_k*g)/d)*t)

Science
Thank you!

Science
What is a example of a scientific law?

Science help (just 4 questions)
jasmine is right.

math

6x + 4(2x + 3) = 34 + 3x 6x + 4(2x) + (4)(3) = 34 + 3x 6x + 8x + 12 = 34 + 3x 14x + 12 = 34 + 3x 12 = 39 + -11x -27/-11 = =11x/-11 2.45 = x

Math
The variable W represents the width of a rectangle. The length of the rectangle, L, is 5 less than twice the width. Write an expression for the length of the rectangle in terms of W. Write a simplified expression for the perimeter of the rectangle in terms of W. Find the ...

Science
What substances (Syrup or water) absorb more thermal energy? Why?

science
Calculate the time in seconds an Olympic Skier would take to finish a 5,000 meter race at an average velocity of 25 m/s downhill.

Physics Classical Mechanics
(a) sqrt(G*M/r_a)

Music
What could be done to minimize the commercialism in today’s music scene?

Science
what are 4 places where convection is important in a home? {I already have the air conditioner}

Science

Civics
Ok thank you!

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