# Posts by Ricky

Total # Posts: 152

**physics **

help me please? I'm lost... A small space probe is put into circular orbit about a newly discovered moon of Saturn. The moon's radius is known to be 550km. If the probe orbits at a height of 1500km above the moon's surface and takes 2.0 earth days to make one orbit...

**physics **

help me please? I'm lost... A small space probe is put into circular orbit about a newly discovered moon of Saturn. The moon's radius is known to be 550km. If the probe orbits at a height of 1500km above the moon's surface and takes 2.0 earth days to make one orbit...

**physics**

A compact disc (CD), initially at rest, reaches an angular speed of 40 rad/s in 5.0 s. a. What is the magnitude of its angular acceleration? b. How many revolutions does the CD make in 5.0 s?

**physics**

Thank you!

**physics**

A light string of length of 56.0 cm connects two small square blocks, each with a mass of 1.50 kg. The system is placed on a slippery (frictionless) sheet of horizontal ice and spun so the two blocks rotate uniformly about their common center of mass, which itself does not ...

**physics**

A 0.50kg mass is suspended on a spring that stretches 3.0cm. a. What is the spring constant? b. What added mass would stretch the spring an additional 2.0cm? c. What is the change in potential energy when the mass is added?

**Physics **

A 0.50kg mass is suspended on a spring that stretches 3.0cm. a. What is the spring constant? b. What added mass would stretch the spring an additional 2.0cm? c. What is the change in potential energy when the mass is added? Conservation of energy is not my favorite......

**PHysics**

Thanks guys! I appreciate your help!

**PHysics **

A gun is fired, and a 50gram bullet is accelerated to a muzzle speed of 100m/s. If the length of the gun barrel is 0.90m, what is the magnitude of the accelerating force? Assume the acceleration is constant. Help me please???

**Physics**

With her bare hands and her arms rigidly extended, a girl catches a 0.16kg baseball coming directly at her at speed of 25m/s. She shouts, “Ouch!’ because the ball stings her hands. She learns quickly how to move her hands with the ball as she catches it. If the ...

**physics**

Thanks guys!

**physics**

In a high speed chase, a policeman's car bumps a criminal's car directly from behind to get his attention. The policeman's car is moving at 40 m/s to the right and has a total mass of 1800 kg. The criminal's car is initially moving in the same direction at 38 m...

**Physics**

Thank you!

**Physics**

A certain amount of work is required to stretch a spring from its equilibrium position. (a) If twice the work is performed on the spring, the spring will stretch more by a factor of (1)square root of 2 (2)2,(3)1/square root of 2, (4)1/2. Why? (b) If 100J of work is done to ...

**Physics**

Do I just find the angles to all of them?

**Physics**

Vector A, a wind velocity vector, has a magnitude of 20 miles per hour and is blowing toward the North. A second wind velocity vector, Vector B, has a magnitude of 50 miles per hour and is blowing toward the Southeast. A third wind velocity vector, Vector C, has a magnitude of...

**Algebra **

The perimeter of a triangle is 60 cm. The longest side exceeds the shortest one by 10 cm.and the sum of the lengths of the longest and the shortest ones is twice the length of the other side. Find the lengths of the sides.

**Calc**

I stil do not understand problem two

**Calc**

Verify that the trigonometric equation is an identity. 1/2 sin 2 x ? sin^2x over sinxcos2x = 1 over sinx+cosx Verify that the trigonometric equation is an identity. cotx over 1-sinx =secx(cscx+1) Can someone please Help!!! these are so hard for me to understand Thank you

**Ellison**

A cylinder that contains methane gas is kept at a temperature of 15°C and exert a pressure of 7atm.If the temperature of the cylinder increases to 25°C,what pressure does the gas now exert?

**Algebra**

Given: f(x) = 8-4x A. Find f(-2) f(2) = 8-4(-2) B. Find x, when f(x) = 8 8-4x = 8 C. Graph the function. ( a graph that has 20X and 20Y as the max numbers) D. State the domain and range of the function. (confused on what to do here) E. Use the graph to find x, when . Show ...

**Math**

(3?5)?4?(14?2)=12

**math**

an airplane travels 750 miles in 1 hour and 45 minutes. what is the average velocity of the plane?

**Algebra**

6 and 2?

**Math**

Na bruh, it doesnt. Area of small: 50.3 Area of big: 452.4 50.3*3 doesnt equal 452.4

**Math**

12.5/100 * 0.5/0.75= 0.083333333 remember that percent is out of a 100.

**math**

Multiply, both the numerator and denominator by anything and it will still be the same ratio

**plz check on math 6th grade**

Find the circumference 2*pi*14= 88 approx Then 440/88 = 5 approx

**Math**

Formula: 3.14*R^2 R=8/2 R=4 Answer B

**Math**

90-48=42 Complementary angles add up to 90

**MATH**

I=PRT 600=2000*0.06*t find t

**Math**

K+M=100 M-30=9(K-30) Solve simultaneously Karen=34 Mother=66

**Math**

The first 4 numbers are the answers

**Math**

Completely bemused, do not know how to get the answer. a)8π b)7√2 c)27√π d)7√×7√×1 13- Determine the exact total surface area of a sphere with radius 2√2 metres. a) An inverted cone with side length 4 metres is placed on top ...

**math**

12/60 are puppies. 60 are the number of dogs, 12 is number of puppies. If there are 1200 dogs, we focus on the 60. 1200/60= 20 Whatever we do to the denominator we do to the numerator, so since we can multiply 60 by 20 to get 1200; we need to multiply 12 by 20 to get the total...

**Math**

Width= 4*1.33= 5.33?

**math**

18 mm long in kilometers

**geography**

what is the capital of fiji

**Physics**

two stars with equal mass of 4.0x10^15 kg are separated by a distance of 2 km. They are moving in circular obits around the middle between the two stars. What is the speed of the stars?

**Art Please HELP!**

I think the answer is A but I don't know PLEASE HELP! Thanks

**Art Please HELP!**

In addition to skills in creating art, which type of knowledge is important for art therapist to have to successfully perform their jobs? A. Knowledge of Physical Therapy B.Knowledge of Psychology C.Knowledge of teaching Strategies D. Knowledge of Art History

**physics**

parallel

**Math 5. Grade**

Trying to figure out how to find the answer. A rectangular has a perimeter of 3600m. What is the width if the length is five times the width? How do I do this.

**English**

I am working on writing a paper. We have to use MLA format. I am a little confused on how to site my sources. I wrote the following paragragh: Panama Canal is an international waterway located across the Isthmus Panama. The Canal was built by the United States. Building ...

**grammar**

D.

**math**

I have a math question.two fielda ats state park are 1000 meters from each other.on a map,the two fields are 8 centimeters apart.What scale is the map using?is it the metric scale??

**Chemistry**

How many molecules are in 0.923 mol of selenium tetrabromide?

**math (4th grade)**

What fraction of the tiles are yellow or purple? Not the word "AND" so answer is 1/6 or 1/2

**math (4th grade)**

1/6 or 1/2

**social studies**

If u travel o degrees latitudes, 0 degrees to 30 degrees north latitude, 120 west longitude u will have travel from

**phi**

Midgley analyzes the position that each society is a separate culture with its own values. This position is known as

**Chemistry**

that should be 261 tons x 2000 lb x 0.014 x (Ar Hg/Mr (CH3)2Hg)

**Algebra**

Thanks a lot Steve.

**Algebra**

Scott set up a volleyball net in his backyard. one of the poles, which forms a right angle with the ground, is 6 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 8 feet from the bottom of the pole. To the nearest tenth of a foot, find the ...

**calculus**

The velocity of a skateboard is v(t) = t^2 - 4 t + 3 m/s when moving in a straight line. A. Find the the change in displacement of the skateboard between 4 seconds and 6 seconds. (Note this may or may not be negative, meaning it goes in the opposite direction, if so then be ...

**calculus**

\int_{4}^{13} f(x) \,dx - \int_{4}^{11} f(x) \,dx = \int_{a}^{b} f(x) \,dx where a= and b= .

**calculus**

A long narrow piece of land gets flooded each year by a river. The flooded area is in the shape of the area under the curve y = 2.3 x^3 and above the x-axis, for 0 \le x \le 3.2. All the distances are in metres.

**calculus**

a. The value of \displaystyle \int_{-2}^{-1} \frac{14}{ 4 x } dx is b. The value of \displaystyle \int_{1}^{2} \frac{14}{ 4 x } dx is

**calculus**

The following definite integral can be evaluated by subtracting F(B) - F(A), where F(B) and F(A) are found from substituting the limits of integration. \int_{0}^{4} \frac{1600 x +1200 }{(2 x^2 +3 x +1)^5}dx After substitution, the upper limit of integration (B) is : and the ...

**calculus**

Ice cream drips out of the bottom of an ice cream cone on a hot day at a rate of r(t) mL per second, as a child eats it slowly, where t is in seconds. If r(t) = 10 e^{-k t}, complete the definite integral expressing the quantity of ice cream lost in the first 3 minutes(s). (...

**calculus**

At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.1 }{1 t + 5} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 27 seconds using the following steps: When ...

**calculus**

Find the area of the region under the curve y = 16 e ^{4 x} between x = -1.4 to x =1.4 .

**chemistry**

5.3L

**math**

Twenty years ago Gabe invested $2,000. For the first ten years he earned 13% compounded semi-annually. For the next ten years he earned 8% compounded quarterly. What was the value of the investment now, at the end of the 20 years?

**Fluid Mechanics-physics**

0.85m³

**statistic**

an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's degree is $48718. in a random sample of 12 full time males workers ages 25 to 34 with a bachelor's degree, the mean annual salary is $47164 ...

**Geometry**

-4/5

**electricity**

A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque on the loop in N-m?

**compemtary math**

Now, using the new table factor from the previous question, calculate the compound amount for the $10,000 investment.

**word problem**

juan bought 12 oranges and ate 1/4 of them carla bought 12 oranges and ate 1/3 of them . which ate more

**math**

70.2

**math**

Jeff bought a refrigerator for $1300. He made a 10% down payment and financed the rest at 6% for one year. How much interest did he pay?

**us government**

A person in Michigan applying for a job in Alabama can expect not to be discriminated against because of the ___________ Clause.

**Physics**

the correct equation is this: (.06)(225) = (5)(v) - (.06)(75) momentum is conserved. total momentum is equal to the momentum of the block minus the momentum of the bullet. you subtract because the two objects move in opposite directions.

**physics**

A 6.0 Kg object undergoes an acceleration of 2.o m/s squared. what is the magnitude of the net external force acting on it?

**math**

Keisha had two pieces of ribbon of equal length. She cut the first piece of ribbon into 15 equal parts. She also cut the second piece of ribbon into equal parts. Nine parts of the first piece are equal in length to 3 parts of the second piece. Into how many parts did she cut ...

**chem**

Which has the lowest freezing point?Select one of the options below as your answer: A. pure water B. 0.5 M ionic NaCl C. 0.5 M ionic CaCl2 D. 0.5 M ionic AlCl3 E. 0.5 M molecular C12H22O11

**matttth help please**

a)FV=1,000,000 i=10.2/12= 0.85= 0.0085 n=40•12=480 FV=R[(1+i)^n-1/i) 1000000=R[(1.0085)^480-1/0.0085] R=1000000/[(1.0085)^480-1/0.0085] R=148.77 b)FV=1000000 i=5.1/12=0.425=0.00425 n=480 R=1000000/[(1.00425)^480-1/0.00425] R=638.38

**U.S. History**

Oh, I read that wrong, misunderstanding. Sorry. Thanks a bunch!

**U.S. History**

So, do you think that it is severe drought? Because I think speculative stock purchases and risky banking practices were causes of the Great Depression.

**U.S. History**

Which one of these was not the causes of the Great Depression? excessive income taxes speculative stock purchases risky banking practices severe drought I think it is excessive income taxes or severe drought. But I don't think it is severe drought because of the Dust Bowl...

**phy**

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.

**science**

How do the atmosphere, lithosphere and hydrosphere interact with each other?

**Bussiness**

The market for carrots is comprised of two segments: fresh market carrots, which have excellent, uniform color and a small core, and processing carrots, which are larger than fresh market carrots but still have good flavor, color, and sweetness. Annual data for the years 1983...

**writing**

I want to know what is wrong in the following sentence: After six months on the job, he faced problems in his first recruitment effort; however, if he solves these problems, the new hires should be able to start working by July.

**Pre-Algrebra**

g(c)=c/231

**economics**

An economist for a bicycle company predicts that, other things equal, a rise in consumer incomes will increase the demand for bicycles. This prediction is based on the assumption that:

**economics**

Suppose that the free market labour supply and labour demand equations are given by Qs = 5W and Qd = 30 - 5W. If the minimum wage were set at $2.50 an hour, how many people would not be able to find work?

**6th grade math-ms. sue**

use the diagram to find the measures of each inicated angle. <dec

**Math**

In a survey of 624 students, 60% more preferred getting news online to getting news on tv. How many students prefer getting news online. I started with the equation 1.6x+x=624, but I don't know if this is the right set up or right idea. Any help is appreciated!

**physics**

a comet experiences a uniforn acceleration from 60m/s to 183m/s what is the rate of acceleration?

**poetry**

Write me acrostic if u can please

**poetry**

Narrative ,free verse, limerick,acrosstic poems about soccer

**maths**

find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.

**Adv algebra**

The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq.

**WRiTinG**

thank you :) but is the paragraph flowing well?

**WRiTinG**

does this paragraph have a good flow? “Nothing is a waste of time if you use the experience wisely.” – Rodin. Time management is the process of exercising conscious control over the amount of time spent on specific activities. I, too, once had been a control ...

**Algebra**

The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq. I think the obvious root would be one but the second roots i just can't figure out!

**Math**

Yes

**writing**

but is the essay going on the right path?