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August 22, 2014

Homework Help: Science: Physics

Recent Homework Questions About Physics

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Physics
What is the partial pressure of water on a day when the temperature is 25C and the relative humidity is 33% P=___Pa
Tuesday, April 22, 2014 at 11:31pm

physics
First start with an isothermal expansion at 2.0 atm from 1.0 L to 4.0 L. If this now is adiabatically compressed back to its original volume, what is the change in internal energy here? Also what are some examples of these processes
Tuesday, April 22, 2014 at 10:30pm

physics 1
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.6 x 1028 kg and 1.5 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would...
Tuesday, April 22, 2014 at 10:15pm

physics
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 4.43 m/s at the bottom of the rise. ...
Tuesday, April 22, 2014 at 9:58pm

physics
Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) m2 = 4.50 kg and r2 = 7.10 m, (3) m3 = 3.60 ...
Tuesday, April 22, 2014 at 9:26pm

PHYSics
a child with a mass of 29 kg sits at a distance of 4m from the pivot point of a seesaw. where should a 15 kg child sit to balance the seesaw?
Tuesday, April 22, 2014 at 9:25pm

physics
robin is standing terrified at the end of a diving board, which is high above the water. if robin has a mass of 75 kg and is standing .6m from the board's pivot point, what torque is robin exerting on the board
Tuesday, April 22, 2014 at 9:17pm

physics
The oscillator that generates a wave completes 47 vibrations in 29.2 s. A given crest of the wave travels 382 cm along the rope in a time period of 10.3 s. What is the wavelength?
Tuesday, April 22, 2014 at 9:01pm

Physics
A 10.0g bul let traveling horizontally at 365 m/s strikes and becomes embedded in a 2.25kg block of wood placed on a large table. What will be the speed of the bullet block combination immediately after impact ?
Tuesday, April 22, 2014 at 8:26pm

Physics
A 12,000kg railroad car traveling at 12.0m/s couples with an identical car sitting on the tracks. What is the speed of the joined card?
Tuesday, April 22, 2014 at 8:19pm

Physics/ Chem
Find the entropy change when 51g of steam condenses to water at 100 ∘C.
Tuesday, April 22, 2014 at 7:58pm

physics
A ball of mass m=0.25 kg is dropped from rest. What is the speed of the ball after it falls two meters?
Tuesday, April 22, 2014 at 7:35pm

Physics
A cylinder with a movable piston encloses 0.39 mole of ideal gas at 308K . How much heat is required to increase its volume isothermally by a factor of 3? 1100J 1400J 1600J 550J
Tuesday, April 22, 2014 at 6:50pm

physics 1
A person who weighs 869 N is riding a 98-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 7.80 x 105 Pa, what is the area of contact between each tire and the ground?
Tuesday, April 22, 2014 at 6:47pm

Physics
A glass window pane has an area of 3.50 m2 and a thickness of 0.600 cm. If the temperature difference between its surfaces is 23.0°C, what is the rate of energy transfer by conduction through the window?
Tuesday, April 22, 2014 at 6:46pm

physics 1
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.6 x 1028 kg and 1.5 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would...
Tuesday, April 22, 2014 at 6:13pm

Physics
A charge q1 of -5.00*10^-9C and a charge q2 of -2.00*10^-9C are separated by a distance of 40.0cm. Find the equilibrium position for a third charge of 15.0*10^-9C
Tuesday, April 22, 2014 at 5:38pm

Physics
A charge q1 of -5.00*10^-9C and a charge q2 of -2.00*10^-9C are separated by a distance of 40.0cm. Find the equilibrium position for a third charge of 15.0*10^-9C
Tuesday, April 22, 2014 at 5:38pm

physics
A small ball with a mass of 0.05 kg moves along a circular orbit with a radius of 0.9 m at a speed of 9.0 m/s. What is the angular momentum of the ball? If the angular momentum of this ball were quantized in the same manner as the angular momentum of electrons in the Bohr ...
Tuesday, April 22, 2014 at 5:27pm

physics
) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the electron in its orbit?
Tuesday, April 22, 2014 at 5:26pm

physics
If a proton were traveling the same speed as electrons in a TV picture tube (about 7.2 107 m/s), what would its de Broglie wavelength be? The mass of a proton is 1.67 10-27 kg.
Tuesday, April 22, 2014 at 5:25pm

physics
In a typical electron microscope, the momentum of each electron is about 1.4 10-22 kg-m/s. What is the de Broglie wavelength of the electrons?
Tuesday, April 22, 2014 at 5:24pm

physics
Things around you are emitting infrared radiation that includes the wavelength 1.44 10-5 m. What is the energy of the photons?
Tuesday, April 22, 2014 at 5:23pm

physics
Gamma rays (γ-rays) are high-energy photons. In a certain nuclear reaction, a γ-ray of energy 0.306 MeV (million electronvolts) is produced. Compute the frequency of such a photon.
Tuesday, April 22, 2014 at 5:22pm

physics
if an ideal gas expands rapidly doing work 450 j of work on its environment, how much heat flowed into or out of it
Tuesday, April 22, 2014 at 4:57pm

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
Tuesday, April 22, 2014 at 4:12pm

Physics
A lifeguard who can swim at 1.2 m/s in still water wants to reach a dock positioned perpendicularly directly across a 550 m wide river. 1. If the current in the river is 0.80 m/s, how long will it take the lifeguard to reach the dock? 2. If instead she had decided to swim in ...
Tuesday, April 22, 2014 at 3:28pm

Physics
Jack is driving with a pail of water along a straight pathway at a steady 25 m/s when he passes Jill who is parked in her minivan waiting for him. When Jack is beside Jill, she begins accelerating at the rate of 4.0 × 10−3 m/s2 in the same direction that Jack is ...
Tuesday, April 22, 2014 at 3:25pm

Physics
An airplane requires 420 m of runway to take off from an airstrip. If the plane starts from rest and it takes 32 s to lift off, with what velocity does it leave the ground? What was the average acceleration of the plane?
Tuesday, April 22, 2014 at 3:25pm

Physics waves- help please
A police officer with good ears hears an approaching motorcycle. The engine sound he eats as the bike approached is 195 Hz. a) Is the actual sound the bike makes higher or lower in pitch? b) After the bike passes he hears 147 Hz as the perceived pitch. If it was a nice 20 ...
Tuesday, April 22, 2014 at 3:23pm

Physics waves
thanks in advanced! A guitar emits a 440 Hz tone. How far apart are the crests in room temperature air (20 degrees celsius)? How long does it take the string to vibrate from crest position to trough position (across twice the amplitude)?
Tuesday, April 22, 2014 at 2:57pm

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
Tuesday, April 22, 2014 at 2:52pm

Physics 1
A cart with mass 340 g moving on a frictionless linear air track at an initial speed of 1.5 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.42 m/s. (a) What is ...
Tuesday, April 22, 2014 at 2:51pm

Physics
Is there anyway you can answer these questions with the information provided. Its using the moving man program. Procedure Place the man so that he is positioned at the 0.00 metre (m) mark. Set the initial velocity at -2.00 m/s and the acceleration at 0.50 m/s2. In a data table...
Tuesday, April 22, 2014 at 2:13pm

physics
A missile is released from a fighter plane traveling horizontally at an altitude of 10000 ft. if the target was hit at 2.09 miles, in mi/h, was the plane traveling?
Tuesday, April 22, 2014 at 3:25am

physics
How fast does water flow from a hole at the bottom of a very wide, 7.8m deep storage tank filled with water? Ignore viscosity.
Tuesday, April 22, 2014 at 2:31am

Physics waves- check answer please
I would like to know if my answer is correct. Thanks in advanced! A person with their head sideways in the water sees a beaver slap its tail on the lake surface 1.2 km away. What is the time difference between the sound heard in the ear listening in the air and the ear hearing...
Tuesday, April 22, 2014 at 2:29am

Physics
An airplane needs to drop a package at a specified drop site. The airplane cruises 5.00 x 10^3 meters above the ground at 350.0 km/hr. Assuming that there is no wind blowing and that the plane is flying in a direction that will take it exactly over the drop site, at what ...
Monday, April 21, 2014 at 9:49pm

Physics
A catapult launches its payload at a 50.0degrees angle and the payload leaves the catapult 3.00 meters off the ground. If the payload travels 300.0 meters in the horizontal direction, what was the launch speed? At what speed does the payload hit the ground?
Monday, April 21, 2014 at 9:49pm

Physics
An airplane needs to fly due south. The plane can fly at a speed of 720.0 km/hr in still air. If there is a wind blowing to the northeast at 70.0 km/hr, in what direction should the plane fly to maintain its heading of due south? How long will it take to fly a 1500.0 km distance?
Monday, April 21, 2014 at 9:49pm

Physics
The bulk modulus of water is B = 2.2 x 10^9 N/m2. What change in pressure Delta P (in atmospheres) is required to keep water from expanding when it is heated from 12.4 °C to 31.1 °C? I know that the equation for pressure is Delta P = Force / Area but I have no idea ...
Monday, April 21, 2014 at 9:25pm

physics
why salt mixed in water before keeping egg and boil it?
Monday, April 21, 2014 at 8:36pm

physics
A spring has a length of 0.248 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.42 kg mass hangs from it. (a) What is the force constant of the spring? (b) What is the unloaded length of the spring?
Monday, April 21, 2014 at 8:11pm

physics
he sun radiates like a perfect blackbody with an emissivity of exactly 1. (a) Calculate the surface temperature of the sun, given it is a sphere with a 7.00 ✕ 108 m radius that radiates 3.80 ✕ 1026 W into 3 K space. K (b) How much power does the sun radiate per ...
Monday, April 21, 2014 at 7:30pm

Physics waves- check answer please
I would like to know if my answer is correct. Thanks in advanced! A person with their head sideways in the water sees a beaver slap its tail on the lake surface 1.2 km away. What is the time difference between the sound heard in the ear listening in the air and the ear hearing...
Monday, April 21, 2014 at 5:59pm

Physics waves- help please
1. A person is listening to a new instrument capable of sounds ranging from 10 dB to 150 dB and with frequencies from 12 Hz to 30,000 Hz. Comment on the suitability of this instrument for the musician or audience. 2. A guitar emits a 440 Hz tone. How far apart are the crests ...
Monday, April 21, 2014 at 4:28pm

Physics waves- check answers please
I am not too sure if my answers are correct. Here are the questions: 1. A student standing near a brick wall claps her hands and hears the echo 0.250 s later. If the speed of sound was 340.0 m/s, how far from the wall was she? For this question I got 85 m. 2. How much faster ...
Monday, April 21, 2014 at 4:21pm

Physics waves- check answers please
1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the frequency the observer...
Monday, April 21, 2014 at 3:36pm

3 physics question please help quick
Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges? (Points : 1) The field lines from the positive charge point toward the negative charge. The field lines from the positive charge point ...
Monday, April 21, 2014 at 3:28pm

physics
How fast does water flow from a hole at the bottom of a very wide, 7.9m deep storage tank filled with water? Ignore viscosity
Monday, April 21, 2014 at 3:03pm

URGENT Physics help
Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each other. What is this process called? (Points : 1) grounding charge polarization conduction repulsion 4. How many coulombs could be in a lightning bolt...
Monday, April 21, 2014 at 2:53pm

Physics
A pilot is flying from City A to City B which is 300 km [NW]. If the plane will encounter a constant wind of 80 km/h from the north and the schedule insists that he complete his trip in 0.75 h, what air speed and heading should the plane have?
Monday, April 21, 2014 at 2:27pm

Physics
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].
Monday, April 21, 2014 at 2:27pm

Physics
A playful college student tosses a water balloon out of his dorm window at a speed of 6.2 m/s at an angle of 10° above the horizontal. The dorm window is 11 m above ground level. 1)What is the maximum height above the ground of the balloon? 2) At what time does the balloon...
Monday, April 21, 2014 at 2:25pm

physics
In the Millikan experiemnt, what error might result if only a few oil drops were used, or if all the oil drops contained an even number of charges.
Monday, April 21, 2014 at 1:03pm

physics
A body of mass m is suspended by two strings (right strings equals an angle a with horizontal and left an angle B with vertical. Dra the figure.
Monday, April 21, 2014 at 12:43pm

physics(please help! please)
*please help ily*. a fishing pole, 2m long, is pivoted at 50cm from one end. the other end has a line with a 4 kg fish on it. what is the effort force required to land the fish?
Monday, April 21, 2014 at 10:59am

physics
a steel aircraft carrier is 370 meter long when moving through the icy north atlantic at a temperature of 2.0 degrees celsius. by how much the carrier lengthen when it is travelling in the warm mediterranean sea at a temperature of 21 degrees celsius?
Monday, April 21, 2014 at 4:03am

Physics
A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s2, a) how long does it take to catch the speeder? b) how far would the police car have to go before it catches the speeder? c) what would its speed be when it ...
Monday, April 21, 2014 at 3:26am

physics
A vibrating stretched string has length 139 cm, mass 38 grams and is under a tension of 38 newtons. What is the frequency of its 5th overtone? f_{6} = If the source of the wave is an open organ pipe of the same length as the wire and the temperature of the air is 20^oC, what ...
Monday, April 21, 2014 at 3:00am

physics
A stationary speaker is emitting a sound of frequency 1330 Hz. The air has a temperature of ^oF. Taking right to be positive, a person is moving toward the source (to the left) at 8.2 \frac{m}{s}. The person will hear a frequency of ... f =
Monday, April 21, 2014 at 3:00am

physics
Use the diagram below. Click to view larger size. Taking right to be positive, the speaker is moving at a velocity of 27 \frac{m}{s} while emitting a sound of frequency 1094 Hz. If the temperature of the air is ^oF, what will be the frequency that you hear? f =
Monday, April 21, 2014 at 2:59am

physics
Two speakers emit sounds, the one with an intensity of 3.19 x 10^{7} \frac{W}{m^2} and the other 8.64 x 10^{8} \frac{W}{m^2}. What is the difference in their intensity level? \Delta \beta =
Monday, April 21, 2014 at 2:58am

PHYSICS
A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I =
Monday, April 21, 2014 at 2:58am

physics
Two speakers are both emitting sounds, the first with an intensity level of 1 x 10^{-11} \frac{W}{m^2} and the second with an intensity of 1 x 10^{-8} \frac{W}{m^2}. What is the db level of the first? \beta = What is the difference in the decibel (db) level of the two sounds...
Monday, April 21, 2014 at 2:57am

physics
A sound wave has a frequency of 1640 Hz. The air temperature is 46 degress F. What is the speed? v = What is the wavelenght of the sound? lambda =
Monday, April 21, 2014 at 2:55am

physics
What is the change in internal energy of a system that takes in 2.40 ✕ 106 J of heat, and does 4.50 ✕ 105 J of work while dissipating 9.00 ✕ 106 J of heat?
Monday, April 21, 2014 at 1:20am

physics
A bullet of mass 100g is fired at avelocity 100m/s into a wooden block of mass 900g.If the bullet gets embeded into the block,then what would be the velocity of the system?
Monday, April 21, 2014 at 1:10am

physics
A 0.250-kg aluminum bowl holding 0.800 kg of soup at 27.0°C is placed in a freezer. What is the final temperature if 430 kJ of energy is transferred from the bowl and soup? Assume the soup has the same thermal properties as that of water, the specific heat of the liquid ...
Monday, April 21, 2014 at 1:03am

physics
A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.8 kg, and its initial speed is 3.8 m/s. How much does the block's temperature increase, if it absorbs 69% of its initial kinetic energy as internal energy? The ...
Monday, April 21, 2014 at 12:56am

Physics waves- check answers please
1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the frequency the observer...
Monday, April 21, 2014 at 12:29am

physics
If a boulder of 9.7 tons is placed on a 70 degree incline, how much extra force would be needed to push the boulder up if the incline increases up by 5 degrees?
Sunday, April 20, 2014 at 10:02pm

physics
Find the distance on a flat screen between the principal image and the second order bright fringe for red light(wavelength=664nm)if there are 900 slits per centimeter and the screen is 2.75 meters from the slits.
Sunday, April 20, 2014 at 7:25pm

physics
A square room has 3 mirrored walls of length L with one side missing. A laser is fired from the center of the open side of the room with an angle of incidence, I, toward the wall on the right. If the reflected beam is to hit a target on the back wall .80 of L from the right ...
Sunday, April 20, 2014 at 7:17pm

Physics waves
I am stuck with both of these questions. Thanks in advanced! 1. If one tone has a frequency of 110 Hz and another tone is played near it with a tone of 113 Hz, the beat frequency is ___ Hz 2. A standing wave has 3 nodes in a string 20 m long. The wavelength of this wave is __ ...
Sunday, April 20, 2014 at 7:16pm

Physics waves- check answers please
1. If a bat emits 10 sounds in 5 seconds, what is the frequency of the bat's vocal outbursts (rounded to first decimal place) My answer: 2.0 Hz 2.If one crest has a 3 cm amplitude and interacts with another pulse to produce a crest 8 cm high this demonstration" a) ...
Sunday, April 20, 2014 at 6:22pm

physics
When heat transfers into a system, is the energy stored as heat? Explain briefly.
Sunday, April 20, 2014 at 4:55pm

Physics
I've been working on this problem for close to an hour now and keep getting very wrong numbers... The two objects with different mass (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in the figure are released from rest, with one object at a height of 0.91 m...
Sunday, April 20, 2014 at 4:42pm

Physics
A 60 man choir sings with the sound intensity of 70 dB in a 12m distance from the choir. a) What is the average sound intensity in this distance? b) What is the sound intensity in a 20 m distance ? Help please :)
Sunday, April 20, 2014 at 2:43pm

Physics
A man pulls a rope attached to a crate with a force of 120 N. If the rope makes an angle of 130 degrees with the ground, find the components of the force.
Sunday, April 20, 2014 at 1:07pm

physics
A 150-g block on the end of a spring with a spring constant of 35 N/m is pulled aside 25 cm and released from rest. In the electrical analog the maximum charge on the capacitor is 0.25 C.The maximum current in the LC circuit is
Sunday, April 20, 2014 at 12:57pm

physics
a bus decreases its speed from 80kmh-1to 60kmh-1 in 5 sec find the acceleration
Sunday, April 20, 2014 at 10:30am

Physics
Table 1: Temperature and volume data Trial Temperature (Celsius) Volume (mL) Starting Volume Room Temperature = Hot Water Trial 1 106 5.2ml Hot Water Trial 2 107 5.4ml Cold Water Trial 1 lo 4.3ml Cold Water Trial 2 lo 4.3ml PLOT AREA (Insert a graph that you either drew here ...
Sunday, April 20, 2014 at 7:45am

Physics
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the membrane is 0.000000008 m. What is the magnitude of the ...
Saturday, April 19, 2014 at 10:16pm

Physics
The anode (positive terminal) of an X-ray tube is at a potential of +125000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode? (b) If the electron is ...
Saturday, April 19, 2014 at 9:44pm

Physics
A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.0 m long, 2.2 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from the surface. When ...
Saturday, April 19, 2014 at 6:56pm

Physics
A physics student who is late for school is trying to catch her bus. The student is 10 m behind the bus as the bus starts from rest and begins to accelerate at 0.5 m/s2 away from her. If the student continues running at a steady 3 m/s, will she catch her bus?
Saturday, April 19, 2014 at 4:58pm

Physics
While driving her new fuel efficient mini-car, Zelda changes her velocity from 22 km/h [forward] to 85 km/h [forward] while driving 2.0 × 102 m. What is her average acceleration ?
Saturday, April 19, 2014 at 4:58pm

physics
a 6.0 kW electric oven is connected to a fuse box by a cable of resistance 0.25 ohms. when the cooker is switched on at full power, a current of 26 A passes through it. Calculate the potential difference between the two ends of the cable and the power wasted in it because of ...
Saturday, April 19, 2014 at 2:00pm

Physics
A 245 g toy car is placed on a narrow 70-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.0 kg track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it soon reaches a ...
Saturday, April 19, 2014 at 1:31pm

Physics
Concider the arrangement of four 1miroC point -charges located at allfour coners of a square with 4cm sides.Calculate the electric field due to the charges in the center of the square.
Saturday, April 19, 2014 at 11:26am

physics
Please help me !!! for solution of this question Water enters a horizontal pipe with a rectangular cross section at a speed of 1.00 m/s. The width of the pipe remains constant but the height decreases. 27.3 m from the entrance, the height is half of what it is at the entrance...
Saturday, April 19, 2014 at 10:51am

Physics
A mass accelerates uniformly when the resultant force acting on it is......?
Saturday, April 19, 2014 at 10:17am

physics
Water enters a horizontal pipe with a rectangular cross section at a speed of 1.00 m/s. The width of the pipe remains constant but the height decreases. 27.3 m from the entrance, the height is half of what it is at the entrance. If the water pressure at the entrance is 2921 Pa...
Saturday, April 19, 2014 at 9:26am

physics problem
The density of a sample of air is 1.157 kg/m3, and the bulk modulus is 1.42 · 105 N/m2. a) Find the speed of sound in the air sample. -----> I found it 350.3 m/s and its correct. b) Find the temperature of the air sample. Give answer in °C. ----> I cant find ...
Saturday, April 19, 2014 at 9:04am

physics
a mass of 10 kg is suspended from a spring balance .it is pulled aside by a string so that it an angle 60 with the vertical.the new reading of the balance is ??
Saturday, April 19, 2014 at 8:24am

physics
Two forces F1 and F2 ifF1is double that ofF2 and the resultant is perpendicular on F1 then the angle betwee them is Expain ans with reason and diagram
Saturday, April 19, 2014 at 5:52am

Physics
A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.19 cm and is 2.13 m above the bottom of the tank. The outlet pipe has a diameter of 5.49 cm and is 4.85 m above the bottom of the tank. A volume of 0.359 m3 of water enters the tank ...
Friday, April 18, 2014 at 10:14pm

Physics
1) Determine the extension of the trampoline when a 200 kg person stands on the trampoline. (k=12000) 2) If on the first push, the trampoline went 8.0 cm below its position in part 1, find the average force exerted by his leg muscles? For the first question i was able to get 0...
Friday, April 18, 2014 at 10:11pm

Physics
f a 40 kg weight and a 200 kg weight each dropped from 1 m above the trampoline, find the final position of each weight. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. I was able to get the answer to this, using mg(h+x) = 1/2kx^x...
Friday, April 18, 2014 at 9:24pm

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