Thursday

May 5, 2016
**physics. HELP**

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?
*Monday, December 16, 2013 by sydney*

**physics. HELP**

A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it take the projectile to hit the floor?
*Monday, December 16, 2013 by sydney*

**physics**

A water balloon is thrown into the air and lands 30.0 meters away 1.8 seconds later. a. What was the speed of the balloon thrown (on the diagonal) b. At what angle was the balloon thrown with respect to the ground?
*Monday, December 16, 2013 by sydney*

**Physics Elena Help pls**

An infinitely long wire carries a current I=100amp . Below the wire a rod of length L=10cm is forced to move at a constant speed v=5m/s along horizontal conducting rails. The rod and rails form a conducting loop. The rod has resistance of R=0.4 ohms . The rails have neglibible...
*Monday, December 16, 2013 by saru*

**physics**

A person has the ability to jump with an initial speed of 6.0 m/s at an angle of 35 degree with the ground. a. How long will the person be in the air? b. How far horizontally will the person travel?
*Monday, December 16, 2013 by sydney*

**physics**

An athlete executing a long jump, leaves the ground at a 30 degree angle with the ground and travels 8.90 meters horizontally in 1.1 seconds. What was the takeoff speed of the athlete along the diagonal?
*Monday, December 16, 2013 by sydney*

**physics**

A hunter aims directly at a target (on the same level) 170 meters away. If the bullet leaves the gun with a speed of 40 m/s, by how much will it miss the target? i.e. What is the vertical drop of the bullet?
*Monday, December 16, 2013 by sydney*

**Physics PLs DAMON HELP**

A thick metal slab carries a current I as shown. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point Q , what can we say about the charge carriers that produce the current in the slab? a....
*Monday, December 16, 2013 by ashish*

**physics/precalculus**

3) A wind with a speed of 60 km/h is directed TOWARDS the SE. A plane, flying due NORTH has an airspeed of 280 m/s. What is the speed (in compass notation) the plane is actually travelling as seen by an air traffic controller on the ground?
*Monday, December 16, 2013 by Emma*

**physics/precalculus**

Starting from the drop off point, you hike in the woods 1.20 km due EAST. You then continue 3.0 km S 30° E. Finally, you head 2.0 km S 20° W. From the drop off point, where (in Compass notation) are you?
*Monday, December 16, 2013 by Emma*

**Physics Help pls**

Consider two single turn coils labeled 1 and 2 that are positioned close to each other. The switch S has been open for a long time. If the switch is now closed and the current through coil 1 is in the direction shown and increasing, which of the following statements is true? a...
*Monday, December 16, 2013 by aaka*

**physics**

A 2.0 kg rock is dropped from the top of a building. I lands 14.0 seconds later. How tall was the building?
*Monday, December 16, 2013 by sydney *

**Check Answers Quick -Physics**

What causes the centripetal acceleration of an electron in a hydrogen atom? electrical attraction gravity friction <-- tension Question 2. Which of the following terms might a jet pilot use to describe a force that presses him against his seat during a high-speed turn? ...
*Monday, December 16, 2013 by Greg*

**physics**

a worker pushes a 1420 N crate with a horizontal force of 420 N a distance of 27m. assume the coefficient between the crate and the floor is 0.22. what is the net force done on the crate?
*Monday, December 16, 2013 by Anonymous*

**physics**

An automobile moving at a constant velocity of 15 m/s passes a gasoline station. Two seconds later, another automobile leaves the station and accelerates at a constant rate of 2 m/s^2 in the same direction as the 1st automobile. How soon does the 2nd automobile overtake the ...
*Monday, December 16, 2013 by caisip*

**Physics**

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current I_0=200A going into the page. A third thin, infinitely long wire with mass per unit length lambda=5g/m carries current I going out of the page. What is the value of ...
*Monday, December 16, 2013 by Lora*

**Physics**

A villain is knocked out of a low-flying aircraft by a heroic scientist-adventurer at an altitude of 370 m. After falling for 120 m the villain reaches terminal velocity. 7.16 seconds after reaching terminal velocity, the villain crash lands in a river full of piranha. If the ...
*Sunday, December 15, 2013 by Bart*

**Physics**

A spring (k=302 N/m) placed vertically on a surface has a 548 g ball placed on top of it. How far must the spring be compressed in order for the ball to be traveling at a speed of 2.8 m/s when it is located 438 cm above its initial position?
*Sunday, December 15, 2013 by Bart*

**Physics**

A spring (k=302 N/m) placed vertically on a surface has a 548 g ball placed on top of it. How far must the spring be compressed in order for the ball to be traveling at a speed of 2.8 m/s when it is located 438 cm above its initial position?
*Sunday, December 15, 2013 by Megan*

**PHYSICS**

Consider two single turn coils labeled 1 and 2 that are positioned close to each other. The switch S has been open for a long time. If the switch is now closed and the current through coil 1 is in the direction shown and increasing, which of the following statements is true? a...
*Sunday, December 15, 2013 by aaka*

**PHYSICS**

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current I_0=200A going into the page. A third thin, infinitely long wire with mass per unit length lambda=5g/m carries current I going out of the page. What is the value of ...
*Sunday, December 15, 2013 by Lora*

**physics**

A neutron star and a black hole are 5.650e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg.
*Sunday, December 15, 2013 by yannet*

**PHYSICS**

An electron is initially at rest in, but not on the axis of, a solenoid that is carrying a steady current I directed as shown in the cross section below. The electron is initially at rest on the -x axis. The current in the solenoid is suddenly increaed to 2I. In what direction...
*Sunday, December 15, 2013 by Marc*

**physics**

A neutron star and a black hole are 5.650e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of the gravitational attraction between the two?
*Sunday, December 15, 2013 by yammy*

**physics**

A stone is thrown vertically upward at a speed of 27.70 m/s at time t=0. A second stone is thrown upward with the same speed 2.140 seconds later. At what time are the two stones at the same height? At what height do the two stones pass each other? What is the downward speed of...
*Sunday, December 15, 2013 by Anna*

**physics**

a camera drops off a 350m high cliff on mars where the acceleration is -3.7m/s^2. how fast is the camera going when it hits the ground?
*Sunday, December 15, 2013 by Anonymous*

**Physics**

A person is standing at the top of a 58.0m tall hill. He stumbles and falls.As he rolls down the hill, magically friction has no effect on him! When he is still 25.0m above the base of the hill determine how fast he is moving.
*Sunday, December 15, 2013 by Ted*

**physics**

rectangular loop of wire of mass and resistance slides on a friction-free horizontal table. There is a region of uniform magnetic field perpendicular to the table as shown. what type of graph will descfibe the speed of the loop as a function of time?
*Sunday, December 15, 2013 by Anton some help please*

**Physics/Calculus**

A spherical oil tank with a radius of 10 feet is half full of oil that weighs 60 pounds per cubic foot. Its top is 6 feet underground. How much work is needed to pump the oil out of the tank through a hole in its top? How do I solve this? Does the fact that it its top is 6 ...
*Sunday, December 15, 2013 by Ehtan*

**Physics**

A children merry go round in the consist of 300 kg solid horizontal disk of radius 8.5 m. It rotates at a speed of .25 revolution per second while a person of mass 150 km takes a ride at the edge of the disk. How fast will the disk be rotating if the person walks 4m along the ...
*Saturday, December 14, 2013 by Tsunayoshi*

**PHYSICS**

A closed loop carrying a current I lies in the xy plane. A uniform magnetic field is directed along the positive y axis. Which of the following statements best describes the total magnetic force on the current loop? a)The total magnetic force is proportional to the area the ...
*Saturday, December 14, 2013 by Aaka*

**physics Classical Mechanics**

a) Two pendulums consist of a very thin string at the end of which hangs a mass which is much larger than the mass of the rod. In pendulum #1, the rod is made of copper. In pendulum #2, the rod is made of invar. What is the percentage in the period of the pendulums when the ...
*Saturday, December 14, 2013 by Hil*

**physics**

Helium balloons are used regularly in scientific research. A typical balloon would reach an altitude of 45.0 km with an air density of 4.3×10−3 kg/m3. At this altitude the helium in the balloon would expand to 540000.0 m3. Take g=10 m/s2. Find the buoyant force on ...
*Saturday, December 14, 2013 by Anonymous*

**physics**

A cylindrical bucket has a small hole at the bottom. The water exiting the hole has velocity v. What is the depth, h, of the water in the bucket? h=
*Saturday, December 14, 2013 by Anonymous*

**physics**

A Venturi flow meter is used to measure the the flow velocity of a water main. The water main has a diameter of 40.0 cm, and the constriction has a diameter of 10.0 cm. The two vertical pipes are open at the top, and the difference in water level between them is 2.0 m. Find ...
*Saturday, December 14, 2013 by Anonymous*

**physics**

Have a hoop (15kg) with a radius of 1.5m. Angular speed is 5 rad/s. What is the total KE possessed by the hoop? The hoop begins to climb an incline which is at a 15 degree angle. Measured along the incline, how far up the incline does it rool before stopping if the incline has...
*Saturday, December 14, 2013 by Meg*

**physics**

A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc and the floor. What ...
*Friday, December 13, 2013 by Nil*

**physics**

A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc and the floor. What ...
*Friday, December 13, 2013 by Nil*

**physics-important fast**

A 1532.9 kg car traveling with a speed of 12.7 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.4 m?
*Friday, December 13, 2013 by jack*

**physics**

Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.1 rad/s and that you have been riding for a "distance" of 8.6 x 103m. The wheel has a radius of 0.45 m. For how many minutes have you been riding ...
*Friday, December 13, 2013 by jack*

**Physics-urgent**

A speeder is driving down the road at a constant 20 m/s, he passes a patrolman parked on the roadside. The patrolman waits 3 seconds, then pursues the speeder, accelerating at a constant 4.0 m/s. How long does it take the patrolman to catch the speeder? How far has he traveled...
*Friday, December 13, 2013 by Kevin*

**physics**

A 1.13 kg skateboard is coasting along the pavement at a speed of 4.28 m/s when a 0.93 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?
*Thursday, December 12, 2013 by Najah*

**pHYSICS HELP!**

A tennis player places a 44 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.064 kg tennis ball horizontally with a velocity of 35.2 m/s toward the north. What is the final velocity of the machine?
*Thursday, December 12, 2013 by Najah*

**physics**

When the net force that acts on a hockey puck is 12 N, the puck accelerates at a rate of 48 m/s2. Determine the mass of the puck.
*Thursday, December 12, 2013 by john*

**Physics**

A ball has an initial velocity of -23m/s. If the ball has a new velocity of 76m/s after 27 seconds, what is the ball acceleration
*Thursday, December 12, 2013 by Jade*

**PHYSICS HELP!**

An 88.5 kg fullback moving east with a speed of 5.5 m/s is tackled by a 94.0 kg opponent running west at 2.90 m/s, and the collision is perfectly inelastic. (a) Calculate the velocity of the players just after the tackle. m/s (b) Calculate the decrease in kinetic energy during...
*Thursday, December 12, 2013 by Najah*

**physics HELP!**

A 4.0 g coin sliding to the right at 26.0 cm/s makes an elastic head-on collision with a 12.0 g coin that is initially at rest. After the collision, the 4.0 g coin moves to the left at 13 cm/s. (a) Find the final velocity of the other coin. cm/s (b) Find the amount of kinetic ...
*Thursday, December 12, 2013 by Najah*

**PHYSICS HELP!**

A 73.5 kg ice skater moving to the right with a velocity of 2.64 m/s throws a 0.18 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
*Thursday, December 12, 2013 by Najah*

**physics**

A 0.20 kg baseball moving at +25.20 m/s is slowed to a stop by a catcher who exerts a constant force of -387 N. A)How long does it take this force to stop the ball? B)How far does the ball travel before stopping?
*Thursday, December 12, 2013 by Najah*

**physics**

A tight uniform string with a length of 1.80 m is tied down at both ends and placed under a tension of 100 N. When it vibrates in its third harmonic, the sound given off has a frequency of 79.0Hz . Part A What is the mass of the string?
*Thursday, December 12, 2013 by HELP!!!! FINALS WEEK*

**Physics-science**

what is the heat required in kilo calories to covert 2kg of ice at 0 c completely into stream at 100c
*Thursday, December 12, 2013 by sherrie*

**Physics**

Suppose 2.7 centimeters of rain at 15 degrees Celsius falls on a rectangular field of dimensions 2.1 kilometers by 1.1 kilometers. The amount of energy released when water vapor condensed and cooled to form this rain is equivalent to how many Hiroshima-size atomic bombs? One ...
*Thursday, December 12, 2013 by Jimmy*

**Physics**

A chunk of metal with a mass of 81.1 grams and a specific heat of 153 joules per kilogram·kelvin is heated to 95.7 degrees Celsius and placed in 144 milliliters of water at 19.5 degrees Celsius. What are the final temperatures of the metal and the water?
*Thursday, December 12, 2013 by Matt*

**physics**

How much tangential force must be exerted to stop a rotating solid disk (radius = 1.50 feet) weighing 480 lbs in 12.0 seconds? The disk is initially rotating at 600 RPM.
*Thursday, December 12, 2013 by Anonymous*

**physics**

A missile is fired horizontally with an initial velocity of 300 m/s from the top of a cliff 200.0 meters high. a. How long does it take the missile to reach the bottom the cliff? b. How far from the base of the cliff does the missile strike the ground?
*Thursday, December 12, 2013 by louis*

**physics**

an auto, moving too fast on a horizontal stretch of mountain road, slides off the road, falling into deep snow 43.9 meters below the road and 87.7 meters beyond the edge of the road. a. How long did the auto take to fall? b. How fast was it going when it left the road?
*Thursday, December 12, 2013 by tina*

**physics**

An airplane traveling 1001 meters above the ocean at 35 m/s is to drop a box of supplies to shipwrecked victims below. a. How many seconds before being directly overhead should the box be dropped?
*Thursday, December 12, 2013 by tina*

**Physics, HELP**

AN auto, moving too fast on a horizontal stretch of mountain road, slides off the road, falling into deep snow 43.9 meters below the road and 87.7 meters beyond the edge of the road. a. How long did the auto take to fall? b. How fast was it going when it left the road?
*Thursday, December 12, 2013 by sydney*

**physics. HELP**

Phil jumps off a high-diving platform with a horizontal velocity if 2.8 m/s and lands in the water 2.6 seconds later. a. How high is the platform b. How far out from where he jumped does he land?
*Thursday, December 12, 2013 by sydney*

**physics**

The area of a span that is unaffected by an applied force is
*Thursday, December 12, 2013 by angela*

**Physics**

A 13g bullet traveling 330 m/s penetrates a 2.0 kg Block of wood and emerges going 270 m/s . If the block is stationary on a frictionless surface when hit how fast does it move after the bullet emerges?
*Thursday, December 12, 2013 by Anonymous*

**physics**

If a board spans two bricks and carries a load of 10kg, where on the board does tension occur?
*Thursday, December 12, 2013 by Carmen Espinoza*

**physics**

An object that deforms when a force is applied to it and returns to its original form when the force is no longer applied is said to be
*Thursday, December 12, 2013 by Maria Gonzales*

**Physics... HELP**

A toy car runs off the edge of a table that is 1.225 meters high. If the car lands 0.400 meters from of the table, a. How long does it take for the car to fall? b. What is the horizontal velocity of the car?
*Thursday, December 12, 2013 by sydney *

**physics**

A dart player throws a dart horizontally at a speed of of 12.4 m/s. The dart hits the board 0.32 meters below the height from which it was thrown. How far away is the player from the board?
*Thursday, December 12, 2013 by sydney *

**physics**

A missile is fired horizontally with an initial velocity of 300 m/s from the top of a cliff 200.0 meters high. a. How long does it take the missile to reach the bottom the cliff? b. How far from the base of the cliff does the missile strike the ground?
*Thursday, December 12, 2013 by sydney *

**Physics Classical Mechanics**

A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 4.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 40.0∘ with respect to the horizontal. Assume that ...
*Thursday, December 12, 2013 by Robert*

**Physics**

A Venturi flow meter is used to measure the the flow velocity of a water main. The water main has a diameter of 30.0 cm, and the constriction has a diameter of 10.0 cm. The two vertical pipes are open at the top, and the difference in water level between them is 3.0 m. Find ...
*Thursday, December 12, 2013 by Jimmy*

**Physics**

An infinitely long wire carries a current I=100A. Below the wire a rod of length L=10cm is forced to move at a constant speed v=5m/s along horizontal conducting rails. The rod and rails form a conducting loop. The rod has resistance of R=0.4ohms. The rails have neglibible ...
*Thursday, December 12, 2013 by Anonymous*

**Physics**

A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla?
*Thursday, December 12, 2013 by Anonymous*

**Physics**

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current Io=200A going into the page. A third thin, infinitely long wire with mass per unit length λ=5g/m carries current I going out of the page. What is the value of ...
*Thursday, December 12, 2013 by Anonymous*

**Physics**

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current Io=200A going into the page. A third thin, infinitely long wire with mass per unit length λ=5g/m carries current I going out of the page. What is the value of ...
*Thursday, December 12, 2013 by roami*

**Physics **

Problem 3- A 12 kg stone slides down a snow-covered hill, leaving point A with a speed of 10 m/s . There is no friction on the hill between points A and B, but there is friction on the level ground at the bottom of the hill, between B and the wall. After entering the rough ...
*Thursday, December 12, 2013 by Anonymous*

**Physics **

Problem 2- A 350 kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop shown in the figure. a) How fast is the roller coaster moving at point B? b) How hard does it press against the track at point B?
*Thursday, December 12, 2013 by Anonymous*

**Physics **

Problem 1- In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m . a) What is her gravitational potential energy on the ...
*Thursday, December 12, 2013 by Anonymous*

**physics- multiple choice**

1. Two forces are applied to a box on a frictionless surface. One force is 40 N [S]. The second force is 70 N [N30ºW]. What is the overall net force? a) 40.6 N [S59.5ºE] b) 110 N c) 40.6 N [N59.5ºW] d) 40.6 N [S30.5ºW] 2. When drawing free body diagrapms, ...
*Thursday, December 12, 2013 by Jessie*

**physics**

A magnetic field is uniform in a region of radius 10 cm, and increasing at 0.02 Tesla/second.
*Thursday, December 12, 2013 by tinamou*

**Physics**

A 275 kg piano slides 4.0 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. a) Calculate the magnitude of the force exerted by the man. b) Calculate the work...
*Wednesday, December 11, 2013 by Josh*

**Physics**

A 275 kg piano slides 4.0 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. a) Calculate the magnitude of the force exerted by the man. b) Calculate the work...
*Wednesday, December 11, 2013 by Josh*

**Math - Precalculus - Parametric Equations/Geometry**

A hockey puck of diameter 3 inches is spinning around its center at a speed of 3 counterclockwise rotations per second. The center of the puck is traveling at a speed of 24 inches per second at an angle of 45 degrees to the positive real axis. (a) At time t=0, the center of ...
*Wednesday, December 11, 2013 by Sam*

**Physics**

Find the tension T2 of the box hanging from the rope if 1 = 25°, 2 = 65°, T1 = 60.58 newtons, and W = 143.4 newtons.
*Wednesday, December 11, 2013 by David*

**PHYSICS I NEED HELP**

Consider free protons following a circular path in a uniform magnetic field with a radius of 1 meter. At t = 0, the magnitude of the uniform magnetic field begins to increase at 0.001 Tesla/second. Enter the tangential acceleration of the protons in meters/second^2: positive ...
*Wednesday, December 11, 2013 by Aaka*

**Physics..**

A container of gas is at a pressure of 1.3x10^5 Pa and a volume of 6.0m^3. How much work is done by the gas if it expands at constant pressure to twice its initial volume? Please help me I really dont know what to do,,,
*Wednesday, December 11, 2013 by cheesecake:)*

**Physics **

A music is played causing 82 dB. A baby cries causing 72 dB annoying the people around him by 123.7 m. What is the sound intensity level?
*Wednesday, December 11, 2013 by Timothy *

**Physics **

A skydiver falls in air reaching terminal velocity, he shouts to his friend at 2000 Hz. His friend receives it at 2355 Hz, what is the divers speed?
*Wednesday, December 11, 2013 by Timothy *

**Physics **

A simple harmonic pendulum has a period of 3.19 s and initial speed of 2.12 m/s. Find the length.
*Wednesday, December 11, 2013 by Timothy *

**Physics **

A rocket is fired with 9.37 km/hr, find the maximum altitude. (no air resistance)
*Wednesday, December 11, 2013 by Timothy *

**Physics **

Two organ pipes are imitating a sound of 12 Hz, one of them is 12 m long. What is the length of the other pipe?
*Wednesday, December 11, 2013 by Timothy *

**Physics Classical Mechanics**

A Venturi flow meter is used to measure the the flow velocity of a water main. The water main has a diameter of 40.0 cm, and the constriction has a diameter of 10.0 cm. The two vertical pipes are open at the top, and the difference in water level between them is 2.0 m. Find ...
*Wednesday, December 11, 2013 by Anonymous*

**Physics Classical Mechanics**

A hydrometer is a device that measures the density of a liquid. The one shown in the figure has a cylindrical bulb of radius R attached to a cylindrical stem of radius r and length l. When placed in a liquid, the device floats as shown in the figure with a length h of stem ...
*Wednesday, December 11, 2013 by Anonymous*

**Physics Classical Mechanics**

A U-tube open at both ends to atmospheric pressure P0 is filled with an incompressible fluid of density ρ . The cross-sectional area A of the tube is uniform and the total length of the column of fluid is L . A piston is used to depress the height of the liquid column on ...
*Wednesday, December 11, 2013 by Anonymous*

**Physics Classical Mechanics**

Attach a solid cylinder of mass M and radius R to a horizontal massless spring with spring constant k so that it can roll without slipping along a horizontal surface. If the system is released from rest at a position in which the spring is stretched by an amount x0 what is the...
*Wednesday, December 11, 2013 by Anonymous*

**Physics Classical Mechanics**

A bar of mass m and negligible height is lying horizontally across and perpendicular to a pair of counter rotating rollers as shown in the figure. The rollers are separated by a distance D. There is a coefficient of kinetic friction μk between each roller and the bar. ...
*Wednesday, December 11, 2013 by Anonymous*

**Physics**

Moe, Larry, and Curly stand in a line with a spacing of d = 1.40m . Larry is 3.00m in front of a pair of stereo speakers 0.800m apart, as shown in the figure(Figure 1) . The speakers produce a single-frequency tone, vibrating in phase with each other. What are the two lowest ...
*Wednesday, December 11, 2013 by Lhaedy*

**Physics**

A horizontal pipe contains water at a pressure of 120kPa flowing with a speed of 1.4m/s . The pipe narrows to one-half its original diameter. a) what is the speed of the water? b) what is the pressure of the water? I tried using the continuity equation A1V1=A2V2, then V2= (A1/...
*Wednesday, December 11, 2013 by Lhaedy*

**Physics**

In the hydraulic system shown in the figure, the piston on the left has a diameter of 4.5cm and a mass is 3.0kg. If the density of the fluid is 710kg/m^3 , what is the height difference h between the two pistons in m? I checked the other similar questions like this and tried ...
*Wednesday, December 11, 2013 by Lhaedy*

**Physics**

In the hydraulic system shown in the figure, the piston on the left has a diameter of 4.5cm and a mass is 3.0kg. If the density of the fluid is 710kg/m^3 , what is the height difference h between the two pistons in m? I checked the other similar questions like this and tried ...
*Wednesday, December 11, 2013 by Lhaedy*

**Physics**

A cylindrical container 1.5m tall contains mercury to a certain depth, d. The rest of the cylinder is filled with water. If the pressure at the bottom of the cylinder is two atmospheres, what is the depth d? I used this equation: 2atm = 1atm + (density of water* gravity* ...
*Wednesday, December 11, 2013 by Lhaedy*

**PHYSICS PLZ**

A very large loop of metal wire with radius 1 meter is driven with a linearly increasing current at a rate of 200 amps/second. A very small metal wire loop with radius 5 centimeter is positioned a small distance away with its center on the same axis (the loops are coaxial). ...
*Wednesday, December 11, 2013 by Aasha*

**physics**

An airplane with a speed of 46.4 m/s is climbing upward at an angle of 44° counterclockwise from the positive x axis. When the plane's altitude is 700 m the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath ...
*Tuesday, December 10, 2013 by Bree*