Tuesday
July 26, 2016

Homework Help: Computers: Operating Systems

Recent Homework Questions About Operating Systems

Math
Solve the system. 3x^2+4x-y=8 y+3=2x^2+4x
Thursday, April 21, 2016 by I need help please!!

History
What was the Columbian Exchange? A. The exchange of new goods globally as a result of European exploration B. A trading post established by Christopher Columbus C. An economic system set up by Christopher Columbus in the Americas D. The trading of goods from Columbia to North ...
Wednesday, April 20, 2016 by Sarah

World History
Can somebody check over my answers my answers are : B;C;B;A;D;C;A;B;D;C;A;B;B;B;C;D;A;A;B;C;​… C;D;1. Trench warfare caused the immobilization of troops on the (1 point)Western Front.Middle Eastern desert.Eastern Front.mountains in Russia.2. After the war, Britain ...
Wednesday, April 20, 2016 by Joe

Physics
The Atwood Machine consists of two masses suspended form a fixed pulley. If the first mass is 0.55kg and 0.8kg, (a) what is the acceleration of the system? (b) What is the magnitude of the tension in the string? (consider the pulley to be frictionless and the masses of the ...
Wednesday, April 20, 2016 by Raphael Grenfell

math
Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in ...
Tuesday, April 19, 2016 by jai anyone please help

physics
A capacitor A1B1 of capacitance C1=2microF is charged under a voltage U1=20V and then isolated. a) Calculate the voltage U (A1B1) between its plates, and it's charge Q1 and energy W1. b) The plates A1 and B1 are connected to those A2 and B2 of an uncharged capacitor of ...
Tuesday, April 19, 2016 by angy

Algebra
Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in ...
Monday, April 18, 2016 by ms. sue please help

Math
Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in ...
Monday, April 18, 2016 by jai

Math
So I'm doing solving system of equations, 2x+y=5 4x+2y=10 I found no solution that would fit it therefore they are parallel to each other. Am I correct?
Monday, April 18, 2016 by Steven

Math Help Please!
Solve the system of equations algebraically. Show all of your steps. y=x^2+2x y=3x+20 Can someone please explain to me how to do this? I want to actually learn it, please. Thanks! :)
Monday, April 18, 2016 by Lady Phantomhive

chemistry
Consider the equilibrium reaction CO(g)+H2O(g)⇋CO2(g)+H2(g) Determine how each change in the left-hand column will stress the system and in which direction the equilibrium reaction will shift in response.
Monday, April 18, 2016 by Jean

physics
Two bodies a and b masses 4kg and 2kg move towards each other with velocities 3m/s and 2m/s and collide. If the collision is perfectly inelastic, find the velocity of the 2 bodies after collision. Find the tolal kinetic energy of the system before and after collision, hence ...
Monday, April 18, 2016 by wealth

physics
a helium nuclide of mass M1 moving with initial velocity V is incident on a stationary of mass M1. After collision M1 was deflected through an angle x and M2 an angle y. If the velocities of the nuclides after collision were V1 and V2 respectively, show that for an elastic ...
Sunday, April 17, 2016 by Henry

science
a helium nuclide of mass M1 moving with a velocity Vo is incident on a stationary nuclide of mass M2. After collision M1 was deflected through an angle x and M2 an angle y. If the velocities of the nuclides after collision were V1 and V2 respectively show that for an elastic ...
Sunday, April 17, 2016 by Henry

PHYSICSSS emergency
= 1.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 60 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.4 kg that hangs vertically. The system starts from rest with the spring unextended b) ...
Saturday, April 16, 2016 by Amelia

physics!
In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat produces acoustic ...
Saturday, April 16, 2016 by Jamie

Math
ABC Game store sells new games, n, for $19 and used games, u, for $9. The store earned $7500 in revenue last month. The store sold 4 times as many used games as new games. Write a system of equations that represents this scenario.
Saturday, April 16, 2016 by Alaina

math
Write a matrix that represents the system of equations below. 7x – 3y = 21 5x – y = 85
Saturday, April 16, 2016 by Alaina

science help pls pls pls
A new object, Object Y, was discovered outside our solar system. Object Y is small and rocky, is not a satellite of any other object, and it does not have enough gravity to clear away smaller objects near its orbit. The characteristics of Object Y most closely resemble those ...
Friday, April 15, 2016 by Oscar

Psychology
What kind of disorder does this person. I think he have schriozophenia. Mr. Jameson is a white 42-years old man who has never been married and is currently unemployed. He was brought to the emergency room by the police for striking an elderly woman in his apartment building. ...
Friday, April 15, 2016 by Moe

PHYSICS PLS HELP ME EVERYONE
m1 = 1.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 60 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.4 kg that hangs vertically. The system starts from rest with the spring unextended ...
Friday, April 15, 2016 by Amelia

Math
Genny babysits for two different families. One family paints her $6 an hour and a bonus of $20 at the end of the night. The other family pays her $3 every half hour and a bonus of $25 at the end of the night. Write and solve the system of equations that represent this ...
Thursday, April 14, 2016 by May

Social Studies
In Athens the system of government became a direct democracy, in which the people participated directly in government. In the Roman republic, citizens participated in government A.in the identical way B.through meetings held in the marketplace C.by taking turns serving as ...
Thursday, April 14, 2016 by lovelife3

Science
1. Which of the following is a correct description of a tornado? (1 point) a large swirling, low-pressure system that forms over the warm Atlantic Ocean a winter storm with wind speeds of at least 56 km/h and low visibility a violently rotating column of air in contact with ...
Thursday, April 14, 2016 by correct me if wrong.

science
10 students whose combined mass is 700 kg ride down 30 m in a elevator. How much thermal energy is produced in the elevator system by the loss in gravitational potential energy of the students
Wednesday, April 13, 2016 by nat

Chemistry
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. I wrote: [N2O][H2O] / [NO]2 [H2] This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the ...
Wednesday, April 13, 2016 by Kat

Science
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00 mol/L, ...
Wednesday, April 13, 2016 by Kat

Chemisty
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00 mol/L, ...
Wednesday, April 13, 2016 by Kat

Science
The opening to the tracheal system (respiratory system) in insects is the spiracle. trachea. alveolus. bronchus. stomata.
Wednesday, April 13, 2016 by Emma

physics
An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the power output of the engine if each cycle lasts for 0.5 seconds?
Wednesday, April 13, 2016 by Anonymous

Chemisty
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy Write the equilibrium constant expression for the reaction. This reaction takes place at 25°C. At this temperature the concentration of NO is found to be 1.75 mol/L, the concentration of H2 is 3.00 mol/L, ...
Wednesday, April 13, 2016 by Kat

PHYSICS!!
In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat produces acoustic ...
Wednesday, April 13, 2016 by Ben

science
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Wednesday, April 13, 2016 by josiah

math
Solve the system of equations algebraically. Show all your steps. y=x^2+2x y=3x+20 Can someone pease help me? I don't think I'm right. Would it be x=-4, y=8 Then, x=5,y=35??
Tuesday, April 12, 2016 by Mina

HEALTH PLZ HELP MEEEEEEEEEEEE ASAPPPPPPPP
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

Health Plz help THX!!
Explain what would happen if your epiglottis stopped working properly. A. you would have to go to dialysis to get your blood filtered everyday B. you would have to use an inhaler when the pollen or dust repeatedly bothered you C. you would choke on food when it went down the ...
Tuesday, April 12, 2016 by Sparkles_01

Math
A farmer has enough seeds to grow 200 crops of wheat and 300 crops of oats in one season. However, his water supply is limited to growing only 250 crops. Find a system of inequalities that describes the possibilities for his farming.
Sunday, April 10, 2016 by Anonymous

Chemisty
An ideal gas with an initial volume of 96L, temperature of 277K, and 7.3mol is permitted to come to a second state with a volume of 450mL and a temperature of 203C. Show the calculation for the final number of moles of gas in the system. (P1)(V1)/(n1)(T1)=(P2)(V2)/(n2)(T2) (P1...
Sunday, April 10, 2016 by Kevin

Math
You have $30 to spend on picking 25 pounds of two different types of fruit at a farm. The apples cost $1.40 per pound the blueberries cost $.90 per pound and the cherries cost $1.10 per pound. You want prices many pounds of apples as the other two fruits combined. A.) write a...
Sunday, April 10, 2016 by Jude

Math: Parametric Equations
The graph of the parametric equations x=cos(t) y=sin(t) meets the graph of the parametric equations x=2+4cos(s) y=3+4sin(s) at two points. Find the slope of the line between these two points. So far I've set up the system of equations cos(t)=2+4cos(s) sin(t)=3+4sin(s) but ...
Sunday, April 10, 2016 by Katie

political science
During the 2nd Party System in American politics, parties moved from a ______ in Congress to a _______ in order to pick candidates and develop a party platform. caucus; national convention informal poll; direct primary caucus; direct primary random selection; direct primary
Sunday, April 10, 2016 by ryan

Computer science
Is computer a system?
Sunday, April 10, 2016 by Noor

Statistics
Calculate the number of new shelving units needed for a medical record filing system based on eight shelves per unit at 36 inches per shelf. The average record size equals 0.30 inches, and the center anticipates seeing 4,500 patients the first year.
Saturday, April 9, 2016 by Linda

english comp
revise the following sentence to use modifiers correctly, clearly and effectively. *= revised sentence 1.The student cafeteria is operated by a college food service system chain. * A chain of food service system operates the student cafeteria. Thank you
Saturday, April 9, 2016 by sis

Social Studies
Please check thanks! 1. Which action on the part of the progressives had the LEAST immediate effect on South Carolina? a. ending child labor b. ending business trusts*** c. outlawing the use of alcohol d. extending suffrage to women 2. Which amendment to the U.S. Constitution ...
Saturday, April 9, 2016 by SpitFireRedHead

PE
2. The brain and spinal cord make up the A. Reflex Pathway*** B. Peripheral Nervous System C. Central nervous system D. The fight-or-flight response 3. Uncontrolled muscle spasms due to a flood of brain activity are called A. Paralysis B. A coma C. Meningitis D. A seizure*** 4...
Friday, April 8, 2016 by HELP ME PLEAAASEEEE

P.E.
2. The brain and spinal cord make up the A. Reflex Pathway B. Peripheral Nervous System C. Central nervous system D. The fight-or-flight response 3. Uncontrolled muscle spasms due to a flood of brain activity are called A. Paralysis B. A coma C. Meningitis D. A seizure 4. The ...
Friday, April 8, 2016 by HELP ME PLEAAASEEEE

Mathematics
Does the figure of a star have rotational system? if it does find the angle of rotation?
Thursday, April 7, 2016 by Queen

physics
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.35 cm. If the spring constant is 222 N/m and the mass is 0.580 kg, determine the mechanical energy of the system. Determine the maximum speed of the mass. Determine the maximum ...
Thursday, April 7, 2016 by Anonymous

Physics
A girl standing on a stationary uniform plank 10m long. The plank can move with negligible friction along the surface of the water. A) the girl walks along the plank with a velocity of 2ms-1 relative to the plank until she reaches the end of the plank. The centre of mass of ...
Thursday, April 7, 2016 by Peter

Algebra
Solve the system of equations and check your solution. x^2+y^2=25 x+2y=10 I tried but I got only the 2 x values 8 plus or minus the square root of 164 all over 2. I know the answer is wrong but I can't find my mistake. Can you show me step-by-step how to solve this system ...
Wednesday, April 6, 2016 by Anonymous

Physics
A horizontal circular platform (m = 110.1 kg, r = 3.21m) rotates about a frictionless vertical axle. A student (m = 98.3kg) walks slowly from the rim of the platform toward the center. The angular velocity, omega, of the system is 3.9 rad/s when the student is at the rim. Find...
Wednesday, April 6, 2016 by Emily

History
1.How did New England's textile industry affect both children and women? (5 points) ⦁ It allowed them to earn a living wage until the age of 25. ⦁ It gave them opportunities not available on family farms. ⦁ It permitted them to complete their schooling...
Wednesday, April 6, 2016 by <3

Physics 1
A textbook of mass 1.95 kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.100 m , to a hanging book with mass 3.08 kg . The system is released from rest, and the books are observed to move a distance 1.27 m ...
Wednesday, April 6, 2016 by David

Physics
An AC power supply operating at a frequency of 220 Hz is connected across an inductor. The maximum voltage of the source is 4 V, and the maximum current is 65 mA. What is the inductive reactance? What is the inductance of the circuit?
Wednesday, April 6, 2016 by SomeoneSexy

physics
A ball bounces to 34 percent of its original height. *1) What fraction of its mechanical energy is lost each time it bounces? *2) What is the coefficient of restitution of the ball-floor system? - I was able to solve part one and get an answer of .66, but part two I don't ...
Tuesday, April 5, 2016 by David

physics
A ball bounces to 34 percent of its original height. *1) What fraction of its mechanical energy is lost each time it bounces? *2) What is the coefficient of restitution of the ball-floor system? - I was able to solve part one and get an answer of .66, but part two I don't ...
Tuesday, April 5, 2016 by David

physics
The system of small objects shown in the figure below is rotating at an angular speed of 2.0 rev/s. The objects are connected by light, flexible spokes that can be lengthened or shortened. What is the new angular speed if the spokes are shortened to 0.15 m? 1.0m x 1.0m distance.
Tuesday, April 5, 2016 by mark

Physics- Optics
A double lens system is made of +35.0 cm lens (lens #1) and a - 26.0 cm lens (lens #2). Lens #1 is placed at x = 0 cm on a meter stick and lens #2 is placed at x = 30.0 cm. Where on the meter stick will the final image be formed when looking at a distant object? s2"=f2(f1...
Tuesday, April 5, 2016 by B

Finance
BUNYAN LUMBER, LLC Bunyan Lumber, LLC, harvests timber and delivers logs to timber mills for sale. The company was founded 70 years ago by Pete Bunyan. The current CEO is Paula Bunyan, the granddaughter of the founder. The company is currently evaluating a 5,000-acre forest it...
Monday, April 4, 2016 by Conroy Williams

math
BOOKS A library contains 2000 books. There are 3 times as many non-fiction books as fiction books. Write and solve a system of equations to determine the number of non-fiction and fiction books.
Monday, April 4, 2016 by Sally

Health
The functional unit of the nervous system is.. A. The Neuron B. The Brain*** C. A reflex D. The cerebrum
Monday, April 4, 2016 by Dylan

physics
A mass hung from a spring stretches the spring by 11 cm when the mass is resting at its equillibrium position. What will be the frequency of oscillation of this system if the mass is put in motion?
Sunday, April 3, 2016 by Zac

physics
A playground merry-go-round of radius 2.00 m has a moment of inertia I = 255 kg·m2 and is rotating about a frictionless vertical axle. As a child of mass 25.0 kg stands at a distance of 1.00 m from the axle, the system (merry-go-round and child) rotates at the rate of ...
Saturday, April 2, 2016 by jojo

physics
The system of small objects shown in the figure below is rotating at an angular speed of 2.0 rev/s. The objects are connected by light, flexible spokes that can be lengthened or shortened. What is the new angular speed if the spokes are shortened to 0.15 m? (An effect similar ...
Saturday, April 2, 2016 by jojo

Algebra
Solve each system. y=2x+2 y=-2x-6
Saturday, April 2, 2016 by Kimmy

Algebra
the sum of two numbers is 18. The difference between three times the lesser number and the greater number is 10. A)define variables and formulate a system of equations from this situation B)solve your system of equations algebraically and find the greater number
Saturday, April 2, 2016 by Serafina

Computer science
Is computer a system?
Saturday, April 2, 2016 by Noor

Health
the main parts of the central nervous system consist of the brain and the
Friday, April 1, 2016 by Michael

algebra
Find solutions to the system y=x^2+3x-4 y=2x+2 A (-3,6)and(2,-4) B (-3,-4) and (2,6) C (-3,-4) and (-2,-2) D no solutions
Thursday, March 31, 2016 by ninaaaa

Check my answers for drivers education please!
star*** by my answer 1. When you must handle several hazards at the same time, the best tactic is to (1 point) compromise the hazards. adjust speed to separate the hazards. minimize, then separate the hazards. **** 2. How many zones of space surrounding your vehicle are ...
Thursday, March 31, 2016 by Anonymous

Please help with drivers education
1. When you must handle several hazards at the same time, the best tactic is to (1 point) compromise the hazards. adjust speed to separate the hazards. minimize, then separate the hazards. minimize, then compromise the hazards. 2. How many zones of space surrounding your ...
Wednesday, March 30, 2016 by Anonymous

Biology
In the classification of eukaryotes, protsists were once placed in a single kingdom. Briefly evaluate whether this classification system is accurate. Why might it be difficult to classify some slime molds as unicellular or multicellular? I know the first one is innacurate, but...
Wednesday, March 30, 2016 by SkatingDJ

Phys-Lens Question
A double lens system is made of +35.0 cm lens (lens #1) and a - 26.0 cm lens (lens #2). Lens #1 is placed at x = 0 cm on a meter stick and lens #2 is placed at x = 30.0 cm. Where on the meter stick will the final image be formed when looking at a distant object? s2"=f2(f1...
Wednesday, March 30, 2016 by A

Social Studies
1. Which fact best supports the claim that Southeast Asia has diverse cultural influences? A)Singapore has a thriving economy based on exports to other nations B)Minangkabau wedding ceremonies blend Hindu and native traditions*** C)Southeast Asia is made up of a large ...
Tuesday, March 29, 2016 by Scarlet

Algebra
I need help Solving the system of equations algebraically and Showing all the steps involved. y=x^2+2x y=3x+20
Tuesday, March 29, 2016 by GummyBears16

Physics
A double lens system is made of +35.0 cm lens (lens #1) and a - 26.0 cm lens (lens #2). Lens #1 is placed at x = 0 cm on a meter stick and lens #2 is placed at x = 30.0 cm. Where on the meter stick will the final image be formed when looking at a distant object? s2"=f2(f1...
Tuesday, March 29, 2016 by A

History
5.)what was the main benefit of the factory system? A.)it cut cost's and made workers more efficient *** B.)it gave people their first chance too support themselves C.)it reduced pollution caused by family-based power sources D.)it increased the value of the workers and as...
Monday, March 28, 2016 by #FreeGucci

Chemistry
We're doing a spontentaity lab in chemistry and I wanted to make sure I was using the right equation to do the questions! Could someone make sure this is right?? q system = - (q water - q calorimeter)
Monday, March 28, 2016 by Alice

Algebra
For a nonsmoker, the biological half-life of theophylline is 8 hours. Find the amount of the drug retained in a nonsmoker's system 18 hours after taking a one-unit dose. (Round your answer to three decimal places.)
Sunday, March 27, 2016 by cindy

Physics
In Europe, the standard voltage is 230 V (rms), AC, and 50 cycles/s. Suppose you take your 5.00 W electric razor to Rome and plug it into the receptacle (with an adapter to fit the receptacle but not to change the voltage). (The standard voltage in the United States is 120 V (...
Saturday, March 26, 2016 by Alyssa

Social Studies
The federal system and the unitary system most differ in that, A-): The unitary system has many different levels of government, but the federal system does not. B-): The Federal system allows citizens to vote on leaders, but the unitary system does not. **** C-): The unitary ...
Thursday, March 24, 2016 by Jess

Social Studies
1. Which of the following was a reform of governor Arnall? (choose all that apply) A. introducing civil service to government officials. B. increasing the salaries of military families C. Expanding voting rights D. Making the prison system more humane 2. Which of the following...
Thursday, March 24, 2016 by Anastasia

SCIENCE!!
1.How do scientists classify small objects in the solar system? A)By size B)By shape C)by size, shape, and temperature D)by size, shape, and composition** (**=ANSWER!!)
Thursday, March 24, 2016 by JacqueesWifee

mit
Quiz 12, Problem 4 (2 points possible) A uniform rod of length d is initially at rest on a flat, frictionless table. The rod is pivoted about a point a distance d/3 from one of its ends, and is free to rotate on the table about this pivot. A small glob of clay (mass m) ...
Wednesday, March 23, 2016 by juanpro

mit
Two circular pucks, each of mass M and radius R, slide toward each other and are about to collide on frictionless ice. The pucks have glue on their edges and when they collide the pucks will stick together. Before the collision, the rightward-travelling puck has speed 2v and ...
Wednesday, March 23, 2016 by juanpro

mit
1 point possible) A uniform disc of radius R and mass m1 is rotating with an angular speed ωi about an axis passing through its center and perpendicular to the disc's plane. A small box of mass m2, initially at the center of the disc, moves away from the center and ...
Wednesday, March 23, 2016 by juanpro

Algebra II
An air show is scheduled for an airport located on a coordinate system measured in miles. The air traffic controllers have closed the airspace, modeled by a quadratic equation, to non-air show traffic. The boundary of the closed airspace starts at the vertex at (10, 6) and ...
Wednesday, March 23, 2016 by Lashunda

Health and physical education
The peripheral nervous system (Select all that apply)A. Is made up of the brain and spinal B. cord Links the body to the brain C. Is made up of sensory and motor neurons D. Is responsible for thought and reasoning.......A and C?
Wednesday, March 23, 2016 by Haruhi

Social Studies
A system in which a series of workers and machines work to add individual parts to a product is known as a(n)____and it_____. Link please to help me?
Wednesday, March 23, 2016 by Amber

PHYSICS
A box slides down a frictionless, 10-meter, 30o incline. Calculate the gravitational potential energy at both the beginning and end of the motion. Calculate the work done by GRAVITY as the box slides down the incline. Compare this to the overall change in gravitational ...
Wednesday, March 23, 2016 by Help!

Physics
A student on a piano stool rotates freely with an angular speed of 3.07 rev/s. The student holds a 1.38 kg mass in each outstretched arm, 0.759 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two masses, is 4.72 kg·...
Tuesday, March 22, 2016 by Mackenzie

Physics
A box slides down a frictionless, 10-meter, 30o incline. Calculate the gravitational potential energy at both the beginning and end of the motion. Calculate the work done by GRAVITY as the box slides down the incline. Compare this to the overall change in gravitational ...
Tuesday, March 22, 2016 by Julie

physics
Two stars with masses 2.75 x 10^30 kg and 5.92 x 10^30 kg form a binary system. If the two stars have an average separation of 7.28×10^8 km, compute the magnitude of the gravitational force in Newtons between the stars. Express your result in scientific notation and to ...
Tuesday, March 22, 2016 by lizbeth

Algebra
Solve each system using substitution: x+ 2y = 8 and 3x-4y=4
Tuesday, March 22, 2016 by Kimmy

physics
A 9-kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley. Answer Thi
Tuesday, March 22, 2016 by Anonymous

Physics
An astronaut exploring a distant solar system lands on an unnamed planet with radius 3,860 km. When the astronaut jumps upward with an initial speed of 3.5 m/s, she rises to a height of 0.62 m. What is the mass of the planet to within 0.1%?
Monday, March 21, 2016 by suveer

Physics
3)-A 9-kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
Monday, March 21, 2016 by Simon

PHYSICS HELP
3)-A 9-kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
Monday, March 21, 2016 by Simon

PHYSICSS HELP
3)-A 9-kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley.
Monday, March 21, 2016 by Simon

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Homework Help: Computers