Thursday
March 30, 2017

Number of results: 47

phsics
what is pumped into walls for insulation? help please :(
March 8, 2009 by lorney

phsics
I'm having some trouble with a question how do you find a vector that balances another one
September 23, 2010 by Emma

phsics
what equation deccribe the condition for observing the fourth dark fringe in a interference pattern correctly
June 10, 2015 by mikhail

intro to phsics
if one vector points north at 3m/s, and another points east at 4m/s, what would be the "resultant" of those two when combined?
October 12, 2011 by ryan

Phsics
HOW MUCH WORK IS DONE With a HORIZONTAL FORCE OF 50.0 N AT AN ANGLE OF 24 degrees over a level distance of 5.0 m. What net work is done on the box?
January 31, 2017 by Kk

phsics
A small mass of 2kg tide to the string of length 3cm complete 4 revolution in one second inhorizontal circle. What is the tangential displacement of the body in 5seconds
November 14, 2015 by temu

phsics
a man weighs 1370N on earth what would he weigh on jupiter where free fall acceleration is 25.9 m/s2 the acceleration of gravity is 9.8 m/s2 in units of N
November 2, 2014 by Martin

phsics
a 4-kg box is pushed across a level floor with a force of 60n for a displacemen of 20m then lifted to a height of 3 m. what is total work done on the box?
October 23, 2011 by kelsie

Phsics
A man weighs 772 N on Earth. What would he weigh on Jupiter, where the free-fall acceleration is 25.9 m/s2? The acceleration of gravity is 9.8 m/s2 . Answer in units of N
November 7, 2011 by Drake

Phsics
A worker pushes a box with a horizontal force of 50.0 N at an angle of 24 degrees over a level distance of 5.0 meters. what net work is done on the box?
February 5, 2017 by JJW

PHSICS
A boxcar of mass 200 tons at rest becomes uncoupled on a 2.5 degree grade. If the track is considered to be frictionless, what speed does the boxcar have after 10 seconds?
October 19, 2008 by NICKI

Phsics
A disk on an air table is acted upon by the following forces 100 N 90 250 N 135 150 N 200 200 N 60 155 N 270 What is the force on the puck?
September 26, 2011 by Michael

Phsics
What is the terminal speed for an 77.0kg skier going down a 44.0 degrees snow-covered slope on wooden skis uk= 0.060? Assume that the skier is 1.70m tall and 0.300m wide.
February 14, 2013 by Tony

Phsics
A crate weighing 600. N is being pulled across the floor. You pull up and to the right on a rope which is attached to the crate. You exert a force of 155 N at an angle θ=29.0° above the horizontal.
September 15, 2014 by Paige

phsics
A 75 kg man weighs 735 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 15% of his body weight?
February 17, 2014 by Anonymous

Phsics
an astronaut, mass 119 kg including spacesuit pushes off from the international space station with a velocity of 2.7 m/s. What is the speed of the Space station in the opposite direction
November 6, 2016 by Chrissy

phsics can someone check if i did it right
A block of wood of mass 3kg is on a rough incline of 37degrees. Find the min value of the coefficient of static friction for the block to remain stationary? Fn=3*9.8cos37 Fn=23.4 3*9.8sin37-us(23.5)=0 us=.743
October 27, 2010 by help

phsics
at what speed would a car need to hit and knock down a metal 7 ft. lampost on a grass surface with a plastic bumber about a foot off the ground, and what damage would be done to the car
February 24, 2011 by fran

phsics
A lawn roller is pushed across a lawn by a force of 125 N along the direction of the handle, which is 22.5° above the horizontal. If 63.5 W of power is developed for 90.0 s, what distance is the roller pushed? 152.4 m
December 9, 2009 by Manny Aragon

phsics
A body is released from a certain height another is released frm d same height 1 sec later. D separation between the 2 bodies 2sec after the release of the 2nd body is?
June 21, 2016 by devansh

phsics
An artillery shell is launched on a flat, horizontal field at an angle of α = 31.5° with respect to the horizontal and with an initial speed of v0 = 266 m/s. What is the horizontal distance covered by the shell after 9.44 s of flight? What is the height of the shell at ...
September 22, 2010 by Anonymous

Phsics
What force must be exerted on block A in order for block b not to fall. The coefficient of static friction between block A and B is 0.55, and the horizontal surface is frictionless. A= 100kg and B=10kg A is on the horizontal surface and B is attached to A.
October 3, 2011 by Kayla

phsics
The moment of weight W about the pivot is 12 N m. The perpendicular distance of the line of action of the force of the steam on the valve from the pivot is 0.2 m. The area of the piston is 0.0003 m2. Calculate (i) the minimum steam force needed for the steam to escape
February 24, 2015 by vamsi

phsics
A drag racer, starting from rest, speeds up for 402 m with an acceleration of +16.0 m/s2. A parachute then opens, slowing the car down with an acceleration of -5.60 m/s2. How fast is the racer moving 2.90 102 m after the parachute opens?
August 23, 2011 by Paul

phsics
The graph in Figure 10-22 shows the force and displacement of an object being pulled. Figure 10-22 (a) Calculate the work done to pull the object 7.0 m. 1150 J (b) Calculate the power that would be developed if the work was done in 2.4 s. Enter a number.2 W
December 9, 2009 by Manny Aragon

phsics
You plan to throw stones by using a sling of length 1.8 m which you whirl over your head. Suppose you wish to throw a stone a distance of 29 m. What must be the centripetal acceleration of the stone just before its release if it is to reach this distance? Assume that the ...
September 27, 2010 by help

phsics
a car moving with an initial velocity of 60 m/s south has a constant acceleration of 10 m/s^2 north. After 12 seconds its velocity will be: A) 60 m/s south B)60 m/s north C) 40 m/s north D) 40 m/s south
September 2, 2013 by jack

phsics
throughout a time interval, while the speed of a particle increases as it moves along the x-axis, its velocity and acceleration might be: a) positive and negative B) negative and negative c) negative and positive D) negative and zero E) positive and zero
September 2, 2013 by jack

phsics
A coin with a diameter of 1.9 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 19 rad/s and rolls in a straight line without slipping. The rotation slows with an angular acceleration of magnitude 2.1 rad/s2. What is the ...
September 27, 2010 by help

phsics
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H = 32.0 m above sea level, directed at an angle theta = 49.3° above the horizontal, and with a speed v = 25.8 m/s. Assuming that air friction can ...
September 22, 2010 by Anonymous

phsics
uniform ladder 25 ft long rests against a smooth vertical wall. The ladder weighs 15 Kg. The lower end of the ladder is 15 ft from the wall. A man weighing 80 Kg climbs up the ladder until he is 20 ft from the base of the ladder, (20 ft of the ladder length not above the floor...
November 15, 2014 by dody

phsics
A ball is rotating in a horizontal circle at the end of a string of length 3.8 m at an angular velocity of 8.5 rad/s. The string is gradually shortened to 3.3 m without any force being exerted in the direction of the ball’s motion. Find the new angular velocity of the ball. ...
November 19, 2014 by owen

phsics
A block is at rest on an inclined plane whose elevation can be varied. The coefficient of static friction is μs= 0.4, and the coefficient of kinetic friction is μk = 0.16. The angle of elevation θ is increased slowly from the horizontal. At what value of θ ...
October 24, 2010 by help

PHSICS
A laser beam in air is incident on a liquid at an angle of 40.0^\circ with respect to the normal. The laser beam's angle in the liquid is 25.0^\circ.What is the liquid's index of refraction? PLEASE HELP!!!
January 28, 2010 by elina

phsics
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H = 32.0 m above sea level, directed at an angle theta = 49.3° above the horizontal, and with a speed v = 25.8 m/s. Assuming that air friction can ...
September 23, 2010 by Anonymous

phsics
A student of weight 830 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?
September 6, 2011 by Elisabeth

termodynamic/phsics
What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If there is a water flow of 500 g / minute to a solar panel on one m2, how much water is heated up under optimal conditions during the passage of the ...

physics
In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...
October 18, 2015 by tim

phsics
Assuming that Albertine's mass is 60.0kg , what is μk, the coefficient of kinetic friction between the chair and the waxed floor? Use g = 9.80m/s2 for the magnitude of the acceleration due to gravity. Assume that the value of k found in Part A has three significant ...
December 12, 2014 by jame

Physics
In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...
October 1, 2013 by Lola

Physics
In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...
October 1, 2013 by Lola

PHSICS
1. How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s? Choose one answer.and explain a. 100 J. b. 50 J. c. 10 J. d. 5 J. 2. You have the grand idea that the science building would be better situated if you moved it North by 4 meters. To accomplish ...
September 22, 2012 by Anonymous

phsics multiple choice
1)A coil of length 1cm has N turns and carries an electric current I. It creates at a point M a magnetic field of intensity B. -If a current 3I is sent in the coil the field strength at M becomes: a. 3B b. B/3 c. B -If the number of turns per unit length is doubled the field ...
May 17, 2016 by angy

Phsics
A car is traveling along a straight road at a velocity of +38.8 m/s when its engine cuts out. For the next 2.01 seconds, the car slows down, and its average acceleration is . For the next 6.36 seconds, the car slows down further, and its average acceleration is . The velocity ...
December 16, 2015 by Courtney

phsics
Two materials, for example silver and copper, of same cross section can be welded into a composite wire. When a voltage is applied across this wire, a stable current i whose value is determined by Ohm¡¦s Law is formed. Since the wire has uniform cross section, the current ...
October 4, 2012 by lam

phsics
A charged particle is moving in a uniform magnetic field. Which of the following statements concerning the magnetic force exerted on the particle is false? A) It does not change the kinetic energy of the particle. B) It can act only on a particle in motion. C) It increases the...
April 2, 2007 by benton

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