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June 27, 2016

Search: An elevator (mass 4125 kg) is to be designed so that the maximum acceleration is 0.0900g. What is the maximum force the motor should exert on the supporting cable?

Number of results: 75,534

Physics
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
November 30, 2009 by Daniel

physics
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
November 30, 2009 by need help!

physics
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...
December 2, 2011 by chase stocker

physics
A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72 Newtons pushes to the left (negative x direction) with a force of 72 Newtons. Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis. The mass is ...
October 6, 2011 by Ashley

Physics
A 570 kg truck is carrying a large 1.9 kg box on its cargo deck when it starts to accelerate. If the coefficient of static friction between the box and the truck’s deck is 0.26, what is the maximum acceleration, in m/s 2, that the truck can have without letting the box slip?
April 21, 2016 by Catherine

Physics
The force exerted by the wind on the sails of a sailboat is 310 N north. The water exerts a force of 240 N east. If the boat (including its crew) has a mass of 330 kg, what are the magnitude and direction of its acceleration? magnitude in m/s2 direction in ° north of east
June 9, 2008 by Elisa

AP Physics
A large box has a mass of 500kg and the coefficient of static friction for the box and the floor is 0.45, and the coefficient of kinetic friction is 0.30. a. What is the minimum horizontal force needed to get the box moving? b. If you continue to push with that force, what ...
November 8, 2015 by Anna

Physics
A 66 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 14 m, and falls a total of 34m. 1. Calculate the spring stiffness constant of the bungee cord, assuming Hooke's law applies. 2. Calculate the maximum acceleration she experiences.
November 1, 2010 by Nick

Physics ASAP
A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a ...
August 3, 2014 by Luke

physics-please help
A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a ...
August 4, 2014 by Sara

physical
A cannon that is 10m long is designed to launch a 10kg ball over a castle wall. In order to do this the ball must have a speed of at least 50m/s as it exits the cannon. For every 10kg of explosives used, the force on the ball in the cannon increases by 1000N. How many kg of ...
September 27, 2012 by Christian

physics
As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145. A) What is the baseballs acceleration in m/s^2 and in g's? B) What is the size of force acting on it?
June 21, 2011 by Ralph

Science
If a loaded truck that can accelerate at 1 m/s2 loses its load and has one-half of the original mass, what acceleration can it attain from the same driving force?
May 20, 2014 by Justin Wyms

Physics
A baseball with mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? -2.8m/s^2
December 21, 2014 by Angel

physics
Two parallel straight conductors 5 m long and 12 cm apart are to have equal currents. The force each conductor experiences from the other is not to exceed 2x10^-2 N. What is the maximum possible current in each conductor? I'm getting a ridiculous answer of 1200 A. I'm doing ...
April 27, 2009 by Sam

science
An object of mass 0.5kg is rotated in horizontal circle by a string of length 1m,the maximum tension in the string before it breaks is 50N.What is the greatest number of revolution per second of the object?
January 12, 2016 by MAGOA

physics
A spherical non-rotating planet (with no atmosphere) has mass 4 kg and radius 9000 km. A projectile of mass is fired from the surface of the planet at a point with a speed at an angle with respect to the radial direction. In its subsequent trajectory the projectile reaches a ...
December 6, 2013 by juanpro

Re: Physics/Math
A 17 N horizontal force F pushes a block weighing 6.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.48. Assume that the block is not moving initially. Will the block move? In ...
February 10, 2007 by COFFEE

AP Bio; PLEASE HELP!
if a fish farmer wanted to harvest his fish so that it recovered at the maximum rate, where should the population be maintained? There is a graph number of weeks vs. numbers of fish. and A B C and D marked on the graph. How do I figure it out??
September 22, 2013 by Anon

Mathematics
Mary wants to build a fence around a rectangular area for a garden. She has 150 ft of fencing and she wants to leave 10 ft opening on side for a gate. In order to make a area of the garden. A maximum what should the dimensions of the garden will be?
January 20, 2016 by Leian

geometry
Mr. Ben has 100 meters of fence to enclose his chicken pen. He wants to use a shape that will give him the maximum area for his pen. Which shape should he use?
November 4, 2012 by Hibiscus

High School Physics
Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it would have experienced a force of approximately 260,000 acting on its torso when it hit the ground. Assuming the torso has a mass of 3800 kg, find the magnitude of the torso's upward acceleration as...
September 23, 2009 by Mia

Math
Determine the equation of the graph in the form y = acos(bx). I will try and describe the Graph. -It starts at the origin (0,0) -It has a minimum value of -2 -It has a maximum value of 2. -It has an x-intercept of 90 degrees. -It starts moving downward below the x-axis, and ...
March 4, 2010 by Jill

Math
Determine the equation of the graph in the form y = acos(bx). I will try and describe the Graph. -It starts at the origin (0,0) -It has a minimum value of -2 -It has a maximum value of 2. -It has an x-intercept of 90 degrees. -It starts moving downward below the x-axis, and ...
March 5, 2010 by Jill

IT
I was told to Select 2 common processors – one Intel and AMD. What is the Maximum Operating Temperature (report in both F˚ and C˚). I have searched everywhere and can not find anything. My friend uses this a lot and he said that maybe I should try. Can someone please...
May 8, 2010 by Amber Lands

Lakshman
A 2M box is set on top of a 12M box. There is friction beween the masses. The 12M box is pushed against a spring. The spring is compressed a distance X by a 12 M mass. The 2M box does not slide from its position on top of the 12M mass. (the two masses are at rest in respect to...
December 12, 2011 by Uma

physics
A block of mass m = 2.67 kg is attached to a spring (k = 32.3 N/m) by a rope that hangs over a pulley of mass M = 5.34 kg and radius R = 6.41 cm, as shown in the figure. a) Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and ...
March 30, 2011 by toot

Physics
A block of mass m = 3.65 kg is attached to a spring (k = 27.5 N/m) by a rope that hangs over a pulley of mass M = 7.30 kg and radius R = 2.81 cm, as shown in the figure. a) Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and ...
October 31, 2014 by Kyle

Physics
A boy on a swing reaches a maximum height of 3.2 m and a minimum height of .55 m. What is the speed of the boy at the lowest point if the boy has a mass of 34 kg? v(final)=?
January 28, 2016 by Tori

Algebra-based Physics
In a rescue, the 76.0 police officer is suspended by two cables. The left cable has an angle of 35 degrees below the horizontal and the right cable has an angle of 48 degrees below the horizontal. Find the tension in the left cable. find the tension in the right cable. I will ...
September 30, 2006 by Mike

Physics
A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.30 s after her feet first touch the water, what average upward force did the water exert on her? I'm not sure how to ...
January 29, 2012 by Emily

Physics
A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a ...
August 2, 2014 by Luke

Physics Please check my answers
It's possible for a body to have both rotational and translational motion at the same time. True. << False. 2. The moment of inertia of an object would be different on the surface of the earth than on the surface of the moon. True. << False. 3. The moment of ...
February 3, 2014 by Chelsea

Physics
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...
October 10, 2013 by aksh

ap phyiscs
A bowler throws a bowling ball of radius R=11 cm down a lane. The ball slides on the lane, with initial speed v(of the center of mass)=7 m/s and initial angular speed =0. The coefficient of kinetic friction between the ball and the lane is .25. The kinectic frictional force fk...
February 10, 2008 by kristen

physicis
suppose the dry ice block is moving to begin with and we exert a steady force,either speeding up or slowing down.how does the block behave? now suppose we make the steady force smaller and smaller.how does the dryice block behave? how will it behave when the force we are ...
January 20, 2011 by chris

Calculus
Find and classify the relative maxima and minima of f(x) if f(x)= defint a=0 b=x function= t^2-4/(1+cos(t)^2) dt x^2-4/(1+cos(x)^2)= 0 x^2-4=0 x^2=4 x= +/- 2 So I got relative maximum as -2 and 2. And relative minimum as zero. However, when I graph it on Wolfram, it gives me ...
May 20, 2013 by Eric

Physics
Two charged particles exert an electrostatic force of 8 N on each other. What will the magnitude of the electrostatic force be if the distance between the two charges is REDUCED to one-third of the original distance? Would you just have to multiply 8 by 9?
January 31, 2011 by Kim

Physics
A projectile of mass 0.377 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 6.1 m/s. The projectile rises to a maximum height of y above the end of the cannon’s barrel and strikes the ground a ...
September 23, 2014 by Bob

Science
In the figure below, a uniform beam of weight 420 N and length 3.2 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N. (a...
December 13, 2008 by Phillipe

physics
we just did an practical on newton's second law and we just have to do a report on it.... basically there are two parts to it, first part is when the overall mass of the system remains constant and the second part is when the force remains constant. there are two parts which i...
September 20, 2008 by WT

physics
A small sphere of mass m=.0064kg and charge q1= +28.9 nC is attached to the end of a string and hangs vertically. A second charge of equal mass and charge q2= -58nC is located below the first charge by a distance d= 2.00cm. a. Find the Tension in the string b. If the string ...
January 14, 2013 by Matt

physics
A ball is thrown straight up into the air. At each of the following instants, is the magnitude of the ball's acceleration greater than g, equal to g, less than g, or zero? Air resistance may be neglected. A) just after leaving your hand? B) at the very top (maximum height)? C...
September 21, 2014 by John

Physics
A block with mass M rests on a frictionless surface and is connected to a horizontal spring of force constant k, the other end of which is attached to a wall. A second block with mass m rests on top of the first block. The coefficient of static friction between the blocks is ...
January 12, 2011 by Jon

math
When an F14 fighter jet takes off, its wings are 110 degrees from the line of flight. To reach its maximum speed, the wings pull to a back position that cretes an angle from the line of flight that is 22 degrees less than a straight angle. Moving at 0.5 degrees per second, how...
March 11, 2014 by Viking

physics
A small mass is attached to a 3.00m string and is raised at an angle of 65 degrees. What is its maximum speed? I've come to the conclusion that I'd need to how far it is to the ground to use the formula Eg = mg(delta)h however how wouldi approach doing that? After that, I ...
January 25, 2015 by Habuta

physics
A mass spectrometer is designed to separate protein fragments. The fragments are ionized by removing a single electron and then enter a 0.80 T uniform magnetic field at a speed of 2.3 * 10^5 m/s. If a fragment has a mass that is 85 times the mass of the proton, what will be ...
October 1, 2011 by Paige

physics
A block slides down a rough plane. The plane makes an angle of 60 degrees with the horizontal, the weight of the block is 5.0N and the coefficient of kinetic (dynamic) friction between the block and the plane is 0.30. 1) determine the magnitude of the frictional force acting ...
October 4, 2006 by blacksheep

Physics
Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from the same point that ...
September 27, 2014 by Wes

Physics....Orbiting Satellite
A orbiting satellite stays over a certain spot on the equator of (rotating) Venus. What is the altitude of the orbit (called a "synchronous orbit")? I found the radius and mass of Venus on the google, but I don't know what I should plug in the "T" if I use the Kepler's 3rd law...
January 15, 2007 by Jessy

Physics
Hi, I have two homework problems I am having issues with. 1. Two carts of equal mass, m = 0.250 kg, are placed on a frictionless track that has a light spring of force constant k = 53.0 N/m attached to one end of it. The red cart is given an initial velocity of V = 2.55 m/s to...
November 12, 2006 by Jennifer2008

Public Speaking
I need help writing a speech out on the following topic:Why banning the use of cell phones while driving should be mandatory nationwide. tate the general purpose, specific purpose, and central idea clearly and in the appropriate form.4. Limit your main points and supporting ...
May 21, 2013 by Amieca

physics
Mary applies a force of 71 N to push a box with an acceleration of 0.57 m/s2. When she increases the pushing force to 83 N, the box's acceleration changes to 0.86 m/s2. There is a constant friction force present between the floor and the box. a) what is the coefficient of the ...
February 10, 2015 by Anonymous

physics
super sam intends to jump off a 100 foot tower with an elastic cord tied to one ankle, ad the other end tied to the top of the tower. This cord is very light but very strong and stretches so that it can stop him without pulling his leg off. Such a cord exerts a force with the ...
March 19, 2012 by Anonymous

college math HELP!!!!!
Sharon has a total of $190,000 to invest in three types of mutual funds: growth, balanced, and income funds. Growth funds have a rate of return of 12%/year, balanced funds have a rate of return of 10%/year, and income funds have a return of 6%/year. The growth, balanced, and ...
February 22, 2014 by Dee

Math ( Surveying )
Need help with this problem! Thanks in advance. The ground clearance of an overhead electrical cable must be determined. Surveyor B is positioned directly under the cable (surveyor B can make a position check by sighting past the string of a plumb bob, held in his or her ...
September 20, 2010 by Dale

Physics
I am really confused on the steps to solve this problem. This is my first time taking physics. The much needed help, would be strongly appreciated. a) Calculate the centripetal force exerted on a vehicle of mass m = 1630 kg that is moving at a speed of 13.9 m/s around a curve ...
October 21, 2014 by Carlos

Physics
A student gets a 2.9 kg mass to oscillate up and down on bottom of a light vertical spring by pulling her hand up and down on the top end of the spring. The spring is a real spring with a spring constant of 93 N/m and a damping constant of 0.7 N sec/m. (b) The student now ...
April 13, 2010 by Jacob

Chemistry
The voltaic cell described by the cell notation has a standard emf (electromotive force) of 0.94 V. Calculate the value (J) for the maximum electrical work that the cell can do under standard conditions. Round your answer to 3 significant figures. Pt(s) / Br-(aq) / Br2(l) // ...
December 3, 2010 by Roger

physics
A tennis ball (m  57 g) is projected vertically with an initial speed of 8.8 m/s. (a) If the ball rises to a maximum height of 3.7 m, how much kinetic energy was dissipated by the drag force of air resistance? (b) How much higher would the ball have gone in a vacuum?
October 24, 2012 by bee-z

Tech Math
A 490 newton woman stands on a bathroom scale while riding in a elevator that is accelerating downward at 2m/sec/sec. Find her apparent weight and her apparent mass. Compare to her starting mass.
July 19, 2012 by Jennifer

Calculus
On planet Calculi, acceleration due to gravity is -20 ft/sec^2. A ball is thrown upward with an initial velocity of 40ft/sec from an initial height of 50. a) Write the equation for the height of the ball, s(t), at time t. b) Find the velocity when the ball hits the ground. c) ...
February 19, 2015 by Anonymous

physics
Unless otherwise stated, all objects are located near the Earth's surface, where = 9.80 . A block of mass 23.0 slides down a frictionless surface inclined at 35. Part A To ensure that the block does not accelerate, what is the magnitude of the smallest force that you must ...
September 29, 2012 by sammy

calculus
27 ft of wire is to be used to form an isosceles right triangle and a circle. Determine how much of the wire should be used for the circle if the total area enclosed is to be a minimum? Maximum?
November 11, 2013 by Heidi

Math(Mechanics)
In finding the minimum thickness for a thin-walled cylinder,should I use the tangential stress equation or the longitudinal stress equation? How about for maximum thickness?
March 7, 2016 by Jhun

Physics
A 1,280-kg car pulls a 350-kg trailer. The car exerts a horizontal force of 3,600-N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effective friction coefficient of 0.15 for the trailer.
March 18, 2015 by Breauna

Physics
Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force ...
October 18, 2010 by Lisa

Physics
Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force...
October 18, 2010 by Lisa

physic
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a) Find the mechanical advantage. b) Find the velocity ratio. c) Find the mean pitch of thread.
April 2, 2009 by luc

Stba
Two equal mass at distance r attract at force F . Now 20% mass from one sphere is transfer to the another sphere. What should the %change in the distance between them so F become same .
November 26, 2015 by Anu

Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ...
April 25, 2011 by Jess J

Physics
Consider the 56 N weight held by two cables shown below. The left hand cable is horizontal. What is the tension in the cable slanted at an angle of 38degrees
November 6, 2012 by Andy

PHYSICS
At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 860 m/s2 and the vertical or y component of its acceleration is 1030 m/s2. The ball's mass is 0.38 kg. What is the magnitude of the ...
September 23, 2010 by Sarah

PHYSICS
At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 860 m/s2 and the vertical or y component of its acceleration is 1030 m/s2. The ball's mass is 0.38 kg. What is the magnitude of the ...
September 23, 2010 by ryan

physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 830 m/s2 and the vertical or y component of its acceleration is 1100 m/s2. The ball's mass is 0.37 kg. What is the magnitude of ...
October 24, 2011 by Anonymous

physics
At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 780 m/s2 and the vertical or y component of its acceleration is 1160 m/s2. The ball's mass is 0.38 kg. What is the magnitude of the ...
February 5, 2013 by Carlos

Physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 and the vertical or y component of its acceleration is 710 m/s2. The ball's mass is 0.35 kg. What is the magnitude of the...
February 13, 2013 by Randy

Physics!
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 860 m/s2 and the vertical or y component of its acceleration is 930 m/s2. The ball's mass is 0.38 kg. What is the magnitude of the...
March 22, 2013 by Christina

Physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 750 m/s2 and the vertical or y component of its acceleration is 850 m/s2. The ball's mass is 0.39 kg. What is the magnitude of the...
February 11, 2014 by Anonymous

Physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 810 m/s2 and the vertical or y component of its acceleration is 910 m/s2. The ball's mass is 0.32 kg. What is the magnitude of the...
October 22, 2014 by Joseph

physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 930 m/s2 and the vertical or y component of its acceleration is 960 m/s2. The ball's mass is 0.34 kg. What is the magnitude of the...
March 25, 2015 by Kristyn

physics
A thin uniform stick having a mass of 0.680 kg and a length of 1.50 m is at rest, hanging vertically from a strong, fixed hinge at the uppermost end of the stick. The stick is free to swing back and forth in an Up-Down-East-West plane. Suddenly, the midpoint of the stick is ...
November 30, 2012 by HALP

Mathematics
A company manufactures two products X and Y by means of two processes A and B. The maximum capacity of process A is 1750 hours and of process B 4000 hours. Each unit of product X requires 3 hours in A and 2 hours in B, while each unit of product Y requires 1 hour in A and 4 in...
August 19, 2015 by Anonymous

science
a 2 kg mass accelerates at 20 m/s/s while being pushed by a 44 N force. Find the force of friction. Net force = Force pushing - Force friction. The net force here is 2 kg x 20 m/s/s.
December 30, 2006 by leafprincess

Physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
June 17, 2013 by Abhishek Ranjan

physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
June 17, 2013 by Anonymous

physics
Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the ball anymore since the ...
June 18, 2013 by jack

Physics Urgent please help
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...
October 13, 2013 by akha

Physics pls anyone can help me? its urgent
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...
October 13, 2013 by akha

Statistics
Use the following figure to answer questions 12-14: Figure 3b (British J Derm 2008) comes from a randomized trial of DHA versus a placebo pill for treating eczema. The figure shows boxplots of the eczema severity score, SCORAD, at baseline and week 8 for each group. SCORAD ...
August 15, 2013 by Rupal

PHYSICS
a) What is the maximum current in a 4.00 µF capacitor when it is connected across a North American electrical outlet having ΔVrms = 120 V, f = 60.0 Hz? mA (b) What is the maximum current when it is connected across a European electrical outlet having ΔVrms = 240 V ...
November 29, 2013 by Cassandra

Physics
An advertisment claims that a certain 1200 kg car can accelerate from rest to a speed of 25 m/s in 8.0 s. what average power must the motor supply in order to cause this acceleration?
June 13, 2011 by unknown

Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ...
April 20, 2011 by Jess J

Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ...
April 25, 2011 by Jess J

Math
Suppose that y≤5⁢x,3⁢x≤y and 14⁢x+15⁢y≤1 together with 0≤x, 0≤y. The maximum value of the function y+x on the resulting region occurs at x=? and y=? The maximum value of the function is ?
February 26, 2011 by Paul

Physics
Thank you so much bobpursley for all your help. I actually think I'm beginning to understand, physics involves a lot of what I've learned so far, Newton's laws, mass, acceleration, etc... I just have to make connections. “A Honda Civic and Lincoln Town Car are initially at ...
December 3, 2009 by Hannah

Physics
Thank you so much bobpursley for all your help. I actually think I'm beginning to understand, physics involves a lot of what I've learned so far, Newton's laws, mass, acceleration, etc... I just have to make connections. “A Honda Civic and Lincoln Town Car are initially at ...
December 3, 2009 by Hannah

Physics
Thank you so much bobpursley for all your help. I actually think I'm beginning to understand, physics involves a lot of what I've learned so far, Newton's laws, mass, acceleration, etc... I just have to make connections. “A Honda Civic and Lincoln Town Car are initially at ...
December 4, 2009 by Hannah

physics
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and the rocket goes into ...
October 8, 2009 by blair

physics
In a hydraulic piston, the small piston has a diameter of 2cm and the large piston has a diameter of 6m. How much more force can the larger piston exert compared with the force applied to the smaller piston?
August 6, 2012 by nick

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