Tuesday

September 27, 2016
**physics **

A metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal at one end. A magnetic field of magnitude B = 0:350 T points out of the page. a) If the rails are separated by L = 25.0 cm and the speed of the rod is 55 cm/s, ...

*Tuesday, May 24, 2016 by dani*

**physics **

A wire has a resistance of R. What will the wire's resistance be if it is stretched to four times its original length without changing the volume of the wire? (Express in terms of R.) R=V/I; 4R=V/I; R=V/(I/4) I think this is right? help please.

*Tuesday, May 24, 2016 by dani*

**physics **

When 115 V is applied across a wire that is 10 m long, the magnitude of the current density is 1.4*10^4 A/m2. Find the resistivity of the wire. R=V/I; R=pL/A => V/I=pL/A => A(x)V/I(x)L=p :(π(5^2))(115)/(1.4*10^4)(10) Is this right? Do I just plug and chug now?

*Tuesday, May 24, 2016 by dani*

**physics **

A convex spherical mirror has a radius of curvature of 50 cm. Determine the position and magni cation of the image of an object located 35 cm in front of the mirror. i only know how to do concave mirrors. i have the equations as 1/f=1/d0+1/di for position and m=hi/h0=-di/d0 ...

*Tuesday, May 24, 2016 by dani*

**Physics**

A rock is thrown straight up at 22.0 m/s from a roof of a 30.0 m tall building. After rising, the rock falls on the street below. Ignoring air resistance, how much time is the rock in the air? Show the work please :)

*Tuesday, May 24, 2016 by Luke*

**Physics**

Heat is added to a system, and the system does 35.0 J of work. If the internal energy increases by 17.0 J, how much heat was added to the system?

*Tuesday, May 24, 2016 by AMOOON*

**Physics**

A 50.0-kg boy runs on a horizontal surface at a speed of 10.0 m/s and jumps onto a cart just before reaching a slope as shown in the figure. The cart is initially at rest. If the mass of the cart is 150 kg, what is the maximum height h the boy/cart will reach up the slope ...

*Tuesday, May 24, 2016 by Robin*

**Physics **

A 50 kg student, starting from rest, slides down an 10.8 meter high water slide. How fast is he going at the bottom of the slide?

*Tuesday, May 24, 2016 by alexis*

**physics**

A 0.26 kg particle moves in an xy plane according to x(t) = - 13 + 1 t - 3 t3 and y(t) = 22 + 6 t - 11 t2, with x and y in meters and t in seconds. At t = 1.2 s, what are (a) the magnitude and (b) the angle (within (-180°, 180°] interval relative to the positive ...

*Tuesday, May 24, 2016 by sherf*

**physics **

A car is travelling along the road at 8m/s.IT accelerates at 1m/s for a distance of 18m.how fast is it then travelling?

*Tuesday, May 24, 2016 by Anjali *

**Physics**

A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 6.1 m/s . When the balloon is 28 m above the ground, she accidentally releases the bag. What is the speed of the bag just before it reaches the ground? I got Vf^2= Vo^2 +2ad Vf^2= 0+ (2*9...

*Monday, May 23, 2016 by T*

**Physics**

A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 6.1 m/s . When the balloon is 28 m above the ground, she accidentally releases the bag. What is the speed of the bag just before it reaches the ground? I got Vf^2= Vo^2 +2ad Vf^2= 0+ (2*9...

*Monday, May 23, 2016 by T*

**physics**

Coherent light of frequency 6.38×1014 Hz passes through two thin slits and falls on a screen 80.0 cm away. You observe that the third bright fringe occurs at ± 3.08 cm on either side of the central bright fringe. How far apart are the two slits? At what distance ...

*Monday, May 23, 2016 by ChrismB*

**physics**

In a marathon race, Chad is out in front, running due north at a speed of 3.92 m/s. John is 94 m behind him, running due north at a speed of 4.33 m/s. How long does it take for John to pass Chad

*Monday, May 23, 2016 by jessica*

**physics**

moving beltway at an airport has a speed v1 and a S length L. A woman stands on the beltway as it moves from one end to the other, while a man in a hurry to reach his flight walks on the beltway with a speed of v2 relative to the moving beltway. (a) What time inter- val is ...

*Monday, May 23, 2016 by anonymous*

**Physics**

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.

*Sunday, May 22, 2016 by Anonymous*

**Physics**

A barrel will rupture when the gauge pressure inside reaches 345 kPa. A vertical pipe is attached to the lower end of the barrel. The barrel and pipe are filled with oil, density of 1200 kg/m3. How long can the pipe be if the barrel is not to rupture?

*Sunday, May 22, 2016 by Anonymous*

**Physics**

A barrel will rupture when the gauge pressure inside reaches 345 kPa. A vertical pipe is attached to the lower end of the barrel. The barrel and pipe are filled with oil, density of 1200 kg/m3. How long can the pipe be if the barrel is not to rupture?

*Sunday, May 22, 2016 by Anonymous*

**Physics**

How high (in meters) would the water rise in the pipes of a building if the water pressure gauge shows the pressure to be 252 kPa at ground level?

*Sunday, May 22, 2016 by Anonymous*

**Physics**

What is the pressure at a depth of 80 m in the ocean? The density of seawater is 1. 03 × 10 3kg/m3. Please express your answer in units of atm.

*Sunday, May 22, 2016 by Anonymous*

**Physics **

A DIVERGING lens has a focal length of 35 cm. (a) Find the image distance when an object is placed 48 cm from the lens. (b) Is the image real or virtual magnified or reduced?

*Sunday, May 22, 2016 by Matt*

**Physics **

A DIVERGING lens has a focal length of 35 cm. (a) Find the image distance when an object is placed 48 cm from the lens. (b) Is the image real or virtual magnified or reduced? I am very lost and don't even know where to start

*Sunday, May 22, 2016 by Matt*

**physics**

as the permeability of a material is the ratio of the magnetic field strength and the magnetic flux, could the permeability of the material be multiplied by the magnetic field strength in order to calculate the flux?

*Sunday, May 22, 2016 by hannah*

**physics**

what is the importance/significance of calculating the magnetic flux density of a solenoid?

*Sunday, May 22, 2016 by hannah*

**physics**

An insulated beaker contains 300g of water initially at 30 degree celsius. water at 100 degree celsius is added until the temperature of mixture reaches 50 degree celsius . the specific heat capacity of water is 4.2J/(kg degree celsius). how much water is added?

*Sunday, May 22, 2016 by annie*

**physics**

A skier slides down a ski slope with an acceleration 2.2 m/s^2 directed down the slope. The coefficient of kinetic friction between the skis and the slope is 0.24. What is the angle of the slope with the ground?

*Sunday, May 22, 2016 by John*

**Physics**

A friend asks you how much pressure is in your car tires. Unfortunately, you have misplaced your gauge but confident in your knowledge of physics you tell your friend “I can figure it out”. From the owner’s manual you find that the car’s mass is 1350 kg and...

*Saturday, May 21, 2016 by Anonymous*

**Physics**

One object has a charge of +5.0 × 10−6 C, and a second object has a charge of +2.0 × 10−6 C. The objects are 0.5 meters apart. What is the electrostatic force between them?

*Friday, May 20, 2016 by Sarah *

**Physics**

In the motion picture It Happened One Night, Clark Gable is standing inside a stationary but in front of Claudette Colbert, who is seated. The bus suddenly starts moving forward and Clark falls into Claudette’s lap. Why did this happen?

*Friday, May 20, 2016 by Patnock Bii Hakurekama*

**physics**

The displacement vector has scalar components of Ax = 80.0 m and Ay = 60.0 m. The displacement vector has a scalar component of Bx = 60.0 m and a magnitude of B = 75.0 m. The displacement vector has a magnitude of C = 100.0 m and is directed at an angle of 36.9° above the...

*Friday, May 20, 2016 by Anonymous*

**physics**

A boulder with a mass of 48.3kg is sitting on the top of a 11.8m tall cliff, and the boulder falls off of the cliff. At what height above the ground is the boulder when it reaches a velocity of 6.40m/s? I found that the kinetic energy of the boulder before it falls off is 5585...

*Friday, May 20, 2016 by Anonymous *

**physics**

A truck with a mass of 2.00x10^3 kg is coasting along a straight level road at 250.0 m/s. It comes to rest in 300.0m. How much work is done by friction in bring the truck to a stop?

*Friday, May 20, 2016 by Anonymous *

**physics**

Suppose the stone is thrown at an angle of 40.0° below the horizontal from the same building (h = 42.0m) as in the example above. If it strikes the ground 36.7 m away, find the following. (Hint: For part (a), use the equation for the x-displacement to eliminate v0t from ...

*Friday, May 20, 2016 by mike*

**physics**

A rifle is shot with 30.0m for distance and hit's a target at 1.90cm as a height. What is the flight time? What is the velocity of the shot?

*Thursday, May 19, 2016 by Leila*

**Physics**

The difference in temperature between summer and winter causes the length of a pendulum in a clock to change by one part in 27000. If the period of the pendulum is 1 s, what time-difference error will this make in one hour?

*Thursday, May 19, 2016 by Kevin*

**Math**

At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in all three?

*Thursday, May 19, 2016 by Luiz*

**Physics**

An object is placed at a distance of 50cm in front of a mirror of focal length 25cm. Find the image distance. If the object is 10cm high what will be the nature and size of the mirror?

*Thursday, May 19, 2016 by Charlesh*

**physics**

A magnetic needle is disposed inside a horizontal coil. In the abscence of any electric current the needle is observed to get oriented in a direction perpendicular to the x'x of the coil. a) what is the direction of the terrestrial magnetic field. b) A current I is allowed...

*Thursday, May 19, 2016 by victoria*

**Physics**

a spring is 30 cm long when a mass of 50 grams is placed when it is at rest. when an additional mass of 20 grams is placed, the spring elongates by 2.5 cm. what is the spring constant and what is the original length of the spring?

*Thursday, May 19, 2016 by Karl Panelo*

**SCIENCE PHYSICS**

A Sky-diver(falling vertically)starts from rest at time t=0.His acceleration is non-uniform until be reaches a steady speed of 50m/s at t=10s.He open his parachute at t=20s and decelerates until t=25s.From t=25s he falls at a steady speed of 5m/s.Draw the speed-time graph for ...

*Thursday, May 19, 2016 by SUMAN DAS*

**physics**

A body is moving with velocity of 10_1.If the motion is uniform; what will be its velocity after 10 second

*Wednesday, May 18, 2016 by raj*

**physics**

The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 27.4 cm from the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at the origin.

*Wednesday, May 18, 2016 by fyf*

**physics**

Find the tensions in the given diagram. If the object supported weight is 800N T4 70o T5 70o T3 C B T1 T2 50o 30o A 800N

*Wednesday, May 18, 2016 by chansa b*

**physics**

The equation y=5sin(3x-4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion

*Wednesday, May 18, 2016 by Arugo Assmpta*

**physics**

A wire 20cm long carry current of 2A is placed perpendicular to a uniform magnetic field. If a force of 0.8N acts on it. Calculate the value of the magnetic field intensity B

*Wednesday, May 18, 2016 by Rose*

**Physics**

An empty rubber balloon has a mass of 0.0120 kg. The balloon is filled with helium at 0 degrees celsuis, 1 atm pressure, and a density of 0.179kg/m^3. The filled balloon has a radius of .5m a)What is the magnitude of the net force acting on the balloon? b) What is the ...

*Wednesday, May 18, 2016 by Sara Draz*

**11th grade physics**

The magnetic field strength along the axis (x'ox) of a solenoid is measured ( o being the center of the solenoid). The adjacent graph represent the length: (The graph represents the variation of B (mT) as a function of x (cm). The numbers on the y axis are 1 2 3 and on the...

*Wednesday, May 18, 2016 by vicky*

**physics**

a bullet is fire in a horizontal direction with a muzzle velocity of 300m/s in the absence of air resistance, how far will it have dropped in travely a horizontal distance of(a)20m?(b)40m?(c)60m? how far will it drop in one second

*Wednesday, May 18, 2016 by rex*

**physics**

What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius

*Wednesday, May 18, 2016 by Ruth *

**physics help grade11**

In a physics laboratory experiment, a 6.00 kg box is pushed across a flat table by a horizontal force F. A. If the box is moving at a constant speed of 0.35 m/s and the coefficient of friction is 0.12. What is the magnitude of F? B. What is the magnitude of F if the box is ...

*Wednesday, May 18, 2016 by jyne*

**Physics**

A man starts running from his home towards east . After covering 60m ,he turns north and runs 80m. If he runs at uniform rate and covers the distance in 1 minute ,then what is its acceleration?

*Wednesday, May 18, 2016 by Mohit*

**Physics**

A 67.6 ohms resistor is connected in parallel with a 103.8 ohms resistor. This parallel group is connected in series with a 20.8 ohms resistor. The total combination is connected across a 18.2-V battery. Find a) the current and b) the power dissipated in the 103.8 ohms resistor.

*Wednesday, May 18, 2016 by Ellie*

**physics**

A race car accelerates from 50 m/s to 75 m/s over a distance of 400 m. What is the race car’s acceleration?

*Wednesday, May 18, 2016 by eli*

**physics**

Find the number of moles in 2.00 L of gas at 35.0°C and under 7.41×107 N/m2 of pressure. Select one: a. 0.051 moles b. 51 ×105 moles c. 58 moles d. 5.8 moles

*Tuesday, May 17, 2016 by Sandra*

**physics**

Four items, all with equal masses, are used to construct the device depicted to the right. Two of the items are uniform solid disks, the smaller of which has half the radius of the other. The disks are glued together so that they share a common axle. The other two items are ...

*Tuesday, May 17, 2016 by ChrismB*

**physics**

A charge of -5.02 μC is traveling at a speed of 8.86 × 106 m/s in a region of space where there is a magnetic field. The angle between the velocity of the charge and the field is 54.6o. A force of magnitude7.85 × 10-3 N acts on the charge. What is the ...

*Tuesday, May 17, 2016 by Lily*

**Physics**

A ray of light is incident on a material with reflective indeed n=1.46. if the material has thickness w=2.6mm; how many times does the light take to pass through the material?

*Tuesday, May 17, 2016 by Lily*

**physics**

Two bar magnets (1) and(2) orthogonal to each other create at point M (intersection of their supports) the respective magnetic field vectors B1 and B2 of intensity: B1=o.oo3T and B2=0.004T a)Determine the names of the poles of the magnets. b)Construct the resultant field ...

*Tuesday, May 17, 2016 by angy*

**physics 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 ...

*Tuesday, May 17, 2016 by angy*

**physics**

A. State Ohm’s law B.Describe the process of electrolysis C. What is the relationship between resistance and resistivity D. What is the current through 8Ω device operating with 120V The potential difference required to pass 3A through 42Ω. E. Describe what is ...

*Tuesday, May 17, 2016 by Chansa*

**physics**

A display sign is supported by a guy making an angle of 37o with the horizontal and by a bracket at the upper end near the vertical wall. The sign weighs 150N. Find A. The tension in wire B. The force exerted by the bracket on the sign.

*Tuesday, May 17, 2016 by Chansa*

**physics**

A ladder rests against a smooth wall (by smooth wall, we mean that the wall exerts in the ladder only a force that is perpendicular to the wall. There is no friction force). The ladder weighs 200N and its center of gravity is 0.4L from the base, where L is the ladder’s ...

*Tuesday, May 17, 2016 by Chansa*

**Physics**

An air plane has a mass of (1.7x10 to power 6) kg, and the air flow past the lower surface of the wings at 95m/s. If the both wings have a surface area of 1200cubic metre, how fast must the air flow over the upper surface of the wings if the plane is to stay in the air?

*Tuesday, May 17, 2016 by Veronica *

**physics**

a stone is thrown vertically upward from tower takes 5 sec to reach ground the height of tower is

*Tuesday, May 17, 2016 by nandan*

**Physics**

1) The electric potential at any point x, y, z in metres is given by V = 3x2. The electric field at a point (2 m, 0, 1 m) is

*Tuesday, May 17, 2016 by Anushka*

**Physics**

During each heart beat, approximately 70cubic cm of blood is from the heart at an average pressure of 105mmHg. Calculate the power output of the heart, in watts, assuming 70 beats per minute.

*Tuesday, May 17, 2016 by Veronica *

**physics**

Two blocks are connected with a light string that is hung over a pulley, as shown in the diagram to the right. One block has twice the mass of the other, and the pulley has the same mass as the heavier block. The pulley consists of a solid, uniform circular disk. The heavier ...

*Tuesday, May 17, 2016 by ChrismB*

**Physics**

A charge of -5.02 μC is traveling at a speed of 8.86 × 106 m/s in a region of space where there is a magnetic field. The angle between the velocity of the charge and the field is 54.6o. A force of magnitude7.85 × 10-3 N acts on the charge. What is the ...

*Tuesday, May 17, 2016 by Matthew*

**Physics**

A uniform bar weighing 60N has a length of 4m and it is supported at its ends by a string. A load W=20N is placed at some point on the bar such that it is in equilibrium when the tension in the string at the left end is 80N, a) locate tge position of W. b) find the tension in ...

*Monday, May 16, 2016 by Drew Gonzales*

**Physics**

A uniform bar weighing 60N has a length of 4mamd it is supported at its ends by a string. A load W=20N is placed at some point on the bar such that it is in equilibrium when the tension in the string at the left end is 80N, a) locate tge position of W. b) find the tension in ...

*Monday, May 16, 2016 by Drew Gonzales*

**Physics**

Is the tension on a rope zero just before a person releases it after swinging from one side of a river to the other?

*Monday, May 16, 2016 by Veronica *

**physics help me **

Four items, all with equal masses, are used to construct the device depicted to the right. Two of the items are uniform solid disks, the smaller of which has half the radius of the other. The disks are glued together so that they share a common axle.The other two items are ...

*Monday, May 16, 2016 by Asfand*

**Quick physics help**

you are in a canyon and yell across. it takes 4 seconds it takes 4 seconds for the echo to come back how wide is the canyon?

*Monday, May 16, 2016 by Anonymous *

**Quick physics help**

you hear a thunder 4 seconds after you see the lightning. how far away is the storm?

*Monday, May 16, 2016 by Anonymous *

**physics **

If the sun's mass is about average, how many stars are there in the Milky Way galaxy? (This is all the information given in the question and I don't know where to go from here).

*Monday, May 16, 2016 by Anonymous*

**physics**

Two blocks are connected with a light string that is hung over a pulley, as shown in the diagram to the right. One block has twice the mass of the other, and the pulley has the same mass as the heavier block. The pulley consists of a solid, uniform circular disk. The heavier ...

*Monday, May 16, 2016 by ChrismB *

**Mech. Engr./Dynamics/Physics/Math**

A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...

*Monday, May 16, 2016 by Jay*

**Physics**

A 56kg student runs at 5m/s, grabs a hanging rope, swings out over a lake. He releases the rope when his velocity is zero. The angl when he releases the rope is 29.25degrees. What is the tension in the rope just before he releases it? What is the maximum tension in the rope?

*Monday, May 16, 2016 by Veronica *

**physics**

A body is in equilibrium when three forces act on it. Two of the forces are F1 of magnitude 8N acting due east and F2 which is 5N acting N 60degree E. Find the magnitude and direction of the third force.

*Monday, May 16, 2016 by somay*

**physics**

Two horizontal turntables are in contact with each other at their outer edges, and the static friction between them allows them to turn together (in opposite directions) without slipping. Thelarger turntable has a radius of 0.36m, and the smaller turntable a radius of 0.12m. ...

*Monday, May 16, 2016 by ChrismB *

**physics**

A rod of length L has a varying density along its length that satisfies: λ(x) =((x^2/L^2)+1)λo where x = 0 is one end of the rod (which has density λo), and x = L is the other end (which has density 2λo). a. Find mass of the rod in terms of L and λo. b...

*Monday, May 16, 2016 by ChrismB *

**physics**

Your roommate gives you a cylindrical can of peanut brittle, saying that she got it for free as a promotion at the grocery store,and that she doesn’t like it because it sticks to her teeth. Just as you are about to open it, you remember that it is April 1st,and you smell ...

*Monday, May 16, 2016 by ChrismB *

**Physics **

A 56kg student runs at 5m/s, grabs a hanging rope and swings out over a lake. He releases the rope when his velocity is zero. The length of the rope is 10m, what is the angle when he releases the rope? (The person swings from the centre to the right).

*Monday, May 16, 2016 by Veronica*

**Mech. Engr./Dynamics/Physics/Math**

A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...

*Sunday, May 15, 2016 by Jay*

**Physics**

A 1370-kg car is skidding to a stop along a horizontal surface. The car decelerates from 27.6 m/s to a rest position in 3.15 seconds. What is the frictional force that the skidding car experiences?

*Sunday, May 15, 2016 by De'Andra*

**Physics**

a westward force of 20 N acts on a 2.0 kg object moving eastward at 60 m/s for 2.0 s. What is the resulting velocity?

*Sunday, May 15, 2016 by Dwaipayan*

**Physics**

At time t=0 an object of mass 50.34 g on the end of a horizontal spring is moving to the right at 10 cm/s and is displaced 2 cm to the left from the equilibrium position. If the spring constant is 0.234N/m, find an expression for the position of the particle as a function of ...

*Sunday, May 15, 2016 by Supansa*

**physics**

A ball of mass 100 g travelling with a velocity of 100 m/s collides with another ball of mass 400 g moving at 50 m/s in the same direction. If they stick together, calculate: (i) their common velocity (ii) loss of enery and hence state the type collision involved. I had ...

*Sunday, May 15, 2016 by somay*

**physics**

Two spools with equal radii and equal masses are wound onto opposite ends of a massless string, the center of which is then hung over a massless, frictionless pulley, as in the diagram to the right. The spool on the left is a solid cylinder, while the one on the right is ...

*Sunday, May 15, 2016 by ChrismB *

**physics**

A circle is cut out of a uniform piece of plywood. How does the rotational inertia measured around a point on its outer edge compare with the rotational inertia about its central axis? a. The two rotational inertias are the same. b. The rotational inertia about its edge is ...

*Sunday, May 15, 2016 by ChrismB *

**physics**

A body thrown upward from ground covers equal distance in 4th and 7th second . With what initial velocity body was projected ?

*Sunday, May 15, 2016 by omna*

**physics**

at what attitude the value of g would become one forth than on the surface of the earth?

*Sunday, May 15, 2016 by zoya*

**College Physics (need help asap)**

a delivery truck is 5km away from a car. The two started at the same time and headed towards the same direction. the delivery truck accelerates at 3m/s^2. If the car should overtake the truck in ten minutes, what should be the acceleration of the car?

*Sunday, May 15, 2016 by Patrick*

**physics**

Weight of metal ball in air is 96N. when it immersed in water then its apparent weight is 72N. What is density of metal?

*Sunday, May 15, 2016 by Akarsh Singh*

**physics **

a light pointer fixed to one prong of a tuning fork touches a vertical plate. The fork is set vibrating and the plate is allowed to fall freely. 8 complete oscillations are counted when the plate falls through 10cm. What is the frequency of the fork ?

*Saturday, May 14, 2016 by please Help urgently*

**Physics **

A net force of 20N acts on a 5kg object.Determine how far the object travels starting from rest to acquire a speed of 8m/s

*Saturday, May 14, 2016 by Anonymous*

**Physics**

'A push broom consists of a 1.70 metre long handle with mass with mass 0.825kg, with a 0.500m wide brush with mass 0.420kg attached to the end of the handle' 'Treating both the handle and the brush as thin rods, find the moment of inertia I of the broom about an ...

*Saturday, May 14, 2016 by Cummins*

**physics**

a certain string vibrates in its fundamental frequency at 250 Hz. If the string is 15 cm long, what is the velocity of the wave in the string? What is the wavelength of the second harmonic frequency (the second wave which will fit into this length of string)?

*Saturday, May 14, 2016 by Jason*

**Physics**

An elastic cord can be stretched to it's elastic limit by a load of 2n.if a 35cm length of the cord is extended 0.6cm by a force of 0.5n.what will be the length of the cord when the stretching force is2.5n

*Saturday, May 14, 2016 by Paul lazarus*

**Physics**

Urgent. A density bottle weigh 0.25 when empty and 0. 75 when. Filled with water and 0.65N when filled with alcohol calculate the volume of water,the density of alcohol. Take density of water=1000kg/m3 acceleration due to gravity= 10m/s

*Friday, May 13, 2016 by Adam*