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March 29, 2015

Homework Help: Science: Physics

Recent Homework Questions About Physics

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Physics
A fire hose ejects a stream of water at an angle of 30.9° above the horizontal. The water leaves the nozzle with a speed of 26.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?
Saturday, February 28, 2015 at 3:33pm

Physics
Can someone help me with this problem? It requires a lot of visualizing and I've never been great at problems like that. A pair of blocks of mass m1 =29.0 kg, and m2 =58.0 kg, are being pushed on a horizontal surface by a constant forces of magnitude F=87.0 N. The angle &#...
Saturday, February 28, 2015 at 3:21pm

Physics
A 42 kg man stands on a bathroom scale in an elevator. Starting from rest at the bottom floor, the elevator ascends, attaining its maximum speed of 1.95 m/s in 1.22 s. It travels with this constant speed for the next 7.80 s. The elevator then slows down for 2.20 s and comes ...
Saturday, February 28, 2015 at 2:41pm

Physics
Hey, I'm studying for my physics class, and I'm not sure how to solve this problem. Can someone walk me through it please? I'd really appreciate any help! John throws a baseball from the edge of a cliff with an initial velocity of 17.0 m/s at an angle 27.0° ...
Saturday, February 28, 2015 at 1:52pm

Physics
In diving to a depth of 785 m, an elephant seal also moves 410 m due east of his starting point. What is the magnitude of the seal's displacement?
Saturday, February 28, 2015 at 1:45pm

Physics
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 380 m/s2. The ball is launched at an angle of 51° above the ground. Determine the horizontal and ...
Saturday, February 28, 2015 at 1:36pm

Physics
How will the balancing length of a potentiometer be affected if resistance in the primary cell is increased or decreased? Will the balancing length change if a resistance is introduced before the jockey ?
Saturday, February 28, 2015 at 12:14pm

Physics
A solid cylinder is pivoted at its center about a frictionless axle. A force is applied to the outer radius of 1.27 m at an angle of 30 ◦ above the tangential and exerts a force of 5 N. A second force is applied by wrapping rope around the inner radius of 0.576 m, which ...
Saturday, February 28, 2015 at 11:38am

physics
an arrow is shot into the air with an initial velocity of 100m is at elevation of 60 degree find. a the time of flight b the maximum height attained c the range
Saturday, February 28, 2015 at 10:43am

Physics
A 2302 kg block of granite is pulled up an incline that has an angle of inclination of 17.0 o with a constant speed of 2.22 m/s by a steam winch (see Figure). The coefficient of kinetic friction between the block and the incline is 0.340. How much power must be supplied by the...
Saturday, February 28, 2015 at 10:41am

physics
the water in a 0.5 km wide river is flowing at 5 m/sec from west to east. a man row a boat with a velocity of 13 m/sec in a direction of north west relative to water. find the time taken to cross the river so that man reaches exactly at same point to opposite end of the river...
Saturday, February 28, 2015 at 9:52am

physics
an anti aircraft gun fires at an elevation of 60 degree at an enemy air at 10.000 m above the ground. AE what speed must cannombe shot to hit the plane at the height (g=10m50)
Saturday, February 28, 2015 at 9:24am

physics
A rectangular loop with a=2.9 cm, and b=1.9 cm, moving with a velocity v=3.8 cm/s into an area where the magnetic field is uniform, pointing into the page, and whose magnitude is B= 450 mT. a) What is in volts the induced emf in the loop when the loop is moving in a region ...
Saturday, February 28, 2015 at 1:10am

Physics
As your vacation job, you are driving a concrete mixer (mass 3300 kg). While driving down a hill (angle α = 29° with the horizontal), suddenly, a cow steps out on the road. You hit on the brakes, and with each locked wheel leaving 24 meters of skid marks, you come to ...
Friday, February 27, 2015 at 10:26pm

Physics
A 755 N diver is standing on a platform 10.0 m above the surface of the water. What is the diver's speed when he hits the water? (disregard friction)
Friday, February 27, 2015 at 8:42pm

college physics
The builders of the pyramids used a long ramp to lift 21000-kg (21-ton) blocks. If a block rose 1.1 m in height while traveling 20 m along the ramp’s surface, how much uphill force was needed to push it up the ramp at constant velocity?
Friday, February 27, 2015 at 3:39pm

physics
A radio station, broadcasting at 89.1 MHz on the FM dial, has two transmission towers d = 40.0 m away from each other, producing signals that are completely in phase. An avid fan of this station is listening to it on her portable radio while jogging directly toward one of the ...
Friday, February 27, 2015 at 2:01pm

physics
Background: the Centaur impacts the moon with a velocity of 2.500 km/s (relative to the moon). Why is it acceptable to assume that the impact velocity will be consistent, even if the mass is not consistent? (Hint: think about the path that the vehicle approaches the moon)
Friday, February 27, 2015 at 1:58pm

physics
A motorcycle of mass 350kg has an acceleration of 3m/s when the resistance against motion is 200N.Calculate the force required
Friday, February 27, 2015 at 7:48am

physics 113
Calculate the change in internal energy of 2kg of water at 90 degree celcius when it is changed to 3:30m3 of steam at 100oC. The whole process occurs at atmospheric pressure. The latent heat of vaporization of wat
Friday, February 27, 2015 at 4:34am

physics
Two masses of 3.25 kg each, connected by a string, slide down a ramp making an angle of 31° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.31. The coefficient of kinetic friction between m2 and the ramp is 0.17. Find the magnitude of ...
Friday, February 27, 2015 at 12:23am

Physics
Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.6 kg, and the bottom block's mass is 4.0 kg. If...
Friday, February 27, 2015 at 12:21am

physics
PART ONE: A charge of 4.70μC is at the origin and a second charge of −2.85μC is on the positive x-axis 1.08 m from the origin. Find the magnitude of the electric field at a point P on the y-axis 0.640 m from the origin. The value of the Coulomb constant is 8.99...
Thursday, February 26, 2015 at 11:21pm

physics
Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction
Thursday, February 26, 2015 at 10:01pm

Physics
A solid cylinder is pivoted at its center about a frictionless axle. A force is applied to the outer radius of 1.27 m at an angle of 30 ◦ above the tangential and exerts a force of 5 N. A second force is applied by wrapping rope around the inner radius of 0.576 m, which ...
Thursday, February 26, 2015 at 8:01pm

Physics
Chelsea is tuning a piano when She discovers that G above middle C is vibrating with a higher frequency than her G tuning fork, which vibrates at 392 Hz. She plays the piano key and tuning fork at the same time and hears a beat frequency of 2.0 Hz. What is the frequency of the...
Thursday, February 26, 2015 at 7:50pm

physics
A 1-m-tall barrel is closed on top except for a thin pipe extending 5.2m up from the top. When the barrel is filled with water up to the base of the pipe (1 m deep) the water pressure on the bottom of the barrel is 10 kPa. What is the pressure on the bottom when water is added...
Thursday, February 26, 2015 at 7:44pm

Physics
Which object had more potential energy when it was lifted to a distance of 10 meters?
Thursday, February 26, 2015 at 7:19pm

physics
A small ball of mass 65 g is suspended from a string of length 53 cm and whirled in a circle lying in the horizontal plane.If the string makes an angle of 28◦ with the vertical, find the centripetal force experienced by the ball. The acceleration of gravity is 9.8 m/s 2...
Thursday, February 26, 2015 at 7:03pm

physics
The two sets of magnetic-field coils,used to form the pictures on the screen, are _______ to each other. Parallel or perpendicular
Thursday, February 26, 2015 at 6:55pm

Physics
Label as to Mechanical, Electrical, Chemical, Heat, Radiant, Nuclear energy: 1) an egg 2)fire 3)waterfall 4)sound 5)light 6)gasoline 7)lightning 8) sun's energy 9) cooking an egg
Thursday, February 26, 2015 at 6:45pm

Physics
A thin road of length 3L in bent at a right angle at a distance of 2L on y axis and L on x axis locate the center of mass if L is 1.2 meter
Thursday, February 26, 2015 at 4:44pm

Physics
A 4900kg cable car goes 350m up a hill inclined 14∘ above the horizontal. What can your learn about the work done by the cable to move car up the hill? Answer quantitatively. Ignore friction.
Thursday, February 26, 2015 at 4:36pm

Physics
A seesaw has a mass of 30 kg, a length of 3.0 m, and fulcrum beneath its midpoint. It is balanced when a 50-kg person sits on one end and a 69-kg person sits on the other end.Locate the center of mass of the seesaw (a distance from the 50-kg person).
Thursday, February 26, 2015 at 4:24pm

physics
How long does it take a plane, traveling at a constant speed of 233 m/s, to fly once around a circle whose radius is 2090 m?
Thursday, February 26, 2015 at 2:36pm

Physics 1
A sled is initially given a shove up a frictionless 37.0∘ incline. It reaches a maximum vertical height 1.45m higher than where it started at the bottom. What was its initial speed? THANKS FOR ANY HELP!
Thursday, February 26, 2015 at 2:10pm

physics
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 330 m/s.
Thursday, February 26, 2015 at 1:39pm

physics
Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 21.0 m/s. Both screech, one emitting a frequency of 3200 Hz and the other one of 3800 Hz. What frequencies do they receive if the speed of sound is 330 m/s?
Thursday, February 26, 2015 at 1:38pm

physics
Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 21.0 m/s. Both screech, one emitting a frequency of 3200 Hz and the other one of 3800 Hz. What frequencies do they receive if the speed of sound is 330 m/s?
Thursday, February 26, 2015 at 1:37pm

physics
Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 21.0 m/s. Both screech, one emitting a frequency of 3200 Hz and the other one of 3800 Hz. What frequencies do they receive if the speed of sound is 330 m/s?
Thursday, February 26, 2015 at 1:37pm

Physics mechanics
Car travelling speed 30 km/h stops after 8m distance through brakes.If same car moves at 60km/h. what is the stopping distance
Thursday, February 26, 2015 at 11:25am

physics
a thin rod of length 3l is bent at aright angle at adistance of l of on the x axis and at adistance of 2l on the y axis locate the center of mass with respect to the corner tale and l is1.2
Thursday, February 26, 2015 at 9:21am

physics
As part of an exercise program, a woman walks south at a speed of 2.00 m/s for 60.0 minutes. Then she turns around and walks north a distance 3000 m in 25.0 minutes. (a) What is the woman's average velocity during her entire motion? (b) What is the woman's average ...
Thursday, February 26, 2015 at 9:18am

Physics
Two men of the same mass climb the same flight of stairs. The first man climbs the stairs for 25 seconds, while the seconds person takes 35 seconds. Which man does the most work?
Thursday, February 26, 2015 at 4:58am

Physics
The drawing shows six point charges arranged in a rectangle. The value of q is 3.15 μC, and the distance d is 0.321 m. Find the total electric potential at location P, which is at the center of the rectangle.
Thursday, February 26, 2015 at 3:48am

physics 100
An aluminum wing on a passenger jet is 30 m long when its temperature is 20°C. At what temperature would the wing be 5 cm (0.05 m) shorter?
Thursday, February 26, 2015 at 2:21am

Physics
A uranium nucleus (mass 238 u, charge 92e) decays, emitting an alpha particle (mass 4 u, charge 2e) and leaving a thorium nucleus (mass 234 u, charge 90e). At the instant the alpha particle leaves the nucleus, the centers of the two are 5.5fm apart and essentially at rest. ...
Thursday, February 26, 2015 at 12:25am

physics
A mass of 337 g connected to a light spring of force constant 19.4 N/m oscillates on a horizontal, frictionless track. The amplitude of the motion is 5.4 cm. Calculate the total energy of the system. Answer in units of J.
Thursday, February 26, 2015 at 12:13am

Physics
A parallel plate capacitor has a rectangular plates with length 5cm and width 3cm. They are separated by a distance 12m and hooked up to a 20V battery A.) what is the area of each plate in m^2 B.) assuming nothing else is present on the circuit what is the potential difference...
Wednesday, February 25, 2015 at 11:05pm

Physics
An infinite,insulating sheet has a surface charge density 3.14C/m^2 the height is 12km A.) find the surface area of the Gaussian surface B.) find the total charge C.) find the total electric flux D.) use Guass's law to find the electric field at a height h=12km above the ...
Wednesday, February 25, 2015 at 10:58pm

Physics
A long insulating wire has a uniform charge density 7nC/m and r=3m away from the wire A.) surface area of the side of the Gaussian surface B.) find total charge enclosed by the Gaussian surface C.) find total electric flux D.) use Guass's law to find the electric flux at r=3m
Wednesday, February 25, 2015 at 10:54pm

physics
an astronaut is competing in mars olympic game her mass is 50 kg she will drive from tower 17 mm above a pool of water how much work in nj must she do to climb 17m
Wednesday, February 25, 2015 at 10:34pm

physics
how much work is done by the upward force of your head on a 50 N rock that you carry horizontally across a 10 m room?
Wednesday, February 25, 2015 at 9:25pm

Physics
How much work does spike do when he pulls a 50 kg sled with a force of 200 N with a rope at an angle of 30 degrees above the horizontal, 20 m?
Wednesday, February 25, 2015 at 9:25pm

physics
A supertanker with the mass of 5.55 × 108 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.55 × 105 N. Determine (a) the magnitude of the resistive force exerted on the tanker by the water and (b) the magnitude of the upward buoyant...
Wednesday, February 25, 2015 at 8:09pm

Physics
A 58 kg woman is ice-skating toward the east on a frictionless frozen lake when she collides with a 94 kg man who is ice-skating toward the west. The maximum force exerted on the woman by the man during the collision is 210 N, west. Take east to be the positive direction of ...
Wednesday, February 25, 2015 at 8:00pm

physics
A Navy jet (see the figure) with a weight of 219 kN requires an airspeed of 87 m/s for liftoff. The engine develops a maximum force of 100 kN, but that is insufficient for reaching takeoff speed in the 85 m runway available on an aircraft carrier. What minimum force (assumed ...
Wednesday, February 25, 2015 at 7:56pm

physics
Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 23.0 m/s. Both screech, one emitting a frequency of 2600 Hz and the other one of 3800 Hz. What frequencies do they receive if the speed of sound is 330 m/s?
Wednesday, February 25, 2015 at 7:40pm

Physics
An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air, fresh water, and a slender handrail of solid steel. The speeds of sound in air, water, and the handrail are 343, 1482, and 5040 m/s, respectively. The ...
Wednesday, February 25, 2015 at 7:28pm

Physics
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 332 m/s.
Wednesday, February 25, 2015 at 7:22pm

Physics
The A string on a string bass is tuned to vibrate at a fundamental frequency of 59.0 Hz. If the tension in the string were increased by a factor of 4, what would be the new fundamental frequency?
Wednesday, February 25, 2015 at 7:17pm

Physics
Pam has a mass of 35.5 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 29.2 m and Pam acquires a speed of 64.1 m/s. What is the magnitude of the force?
Wednesday, February 25, 2015 at 7:13pm

Physics
A string of length 2.7 m is fixed at both ends. When the string vibrates at a frequency of 90.0 Hz, a standing wave with 5 loops is formed. What is the wavelength of the waves that travel on the string?
Wednesday, February 25, 2015 at 7:04pm

Physics
A sound wave is incident on a pool of fresh water. The sound enters the water perpendicularly and travels a distance of 0.55 m before striking a 0.10-m-thick copper block lying on the bottom. The sound passes through the block, reflects from the bottom surface of the block, ...
Wednesday, February 25, 2015 at 6:54pm

physics
The fundamental frequency of a string fixed at both ends is 384 Hz. How long does it take for a wave to travel the length of this string?
Wednesday, February 25, 2015 at 6:50pm

physics
If micheal Jordan has a vertical leap of 1.29 m, what is his take off speed and his hang time(total time to move upwards to the peak and then return to the ground)?
Wednesday, February 25, 2015 at 6:47pm

Physics
A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, µk, between the block and the incline?
Wednesday, February 25, 2015 at 5:04pm

Physics
Speed: A block lies on a horizontal frictionless surface. A horizontal force of 100 N is applied to the block, giving rise to an acceleration of 3 m/s2. What is the speed of the block after 10s? I think I would just multiple the two and put it in terms of speed but I am not sure.
Wednesday, February 25, 2015 at 4:50pm

physics
A fighter pilot is exposed to an acceleration of 3g in the horizontal direction during takeoff. Knowing that 1g=9.8 m/s2 and that the mass of the fighter pilot is 63.6 kg, what force (in Newtons) does the fighter pilot experience in the horizontal direction? This is the force ...
Wednesday, February 25, 2015 at 4:50pm

Physics
Calculate the size of the gravitational pull of a sphere of mass 10kg on a mass 2.0kg when their centres are 0.2m apart. What is the force of the 2.0kg mass on the 10kg mass?
Wednesday, February 25, 2015 at 3:16pm

physics
what is the magnitude kinetic frictional force between a 1500 kg car decelerating at a rate of 5.0m/s^2 skidding across a horizontal road.
Wednesday, February 25, 2015 at 3:05pm

Physics
Calculate the weight of an astronaut whose mass (including spacesuit)is 72kg on the surface of the moon? What is the astronauts weight on Earth? Comment on the difference
Wednesday, February 25, 2015 at 2:58pm

physics
what is the amount of force needed to move an object that has a mass of 2.0kg at an acceleration of 3.0m/s^2 with the force acting on the object at a 30 degree angle
Wednesday, February 25, 2015 at 1:51pm

physics
A person in a kayak starts paddling, and it accelerates from 0 to 0.63 m/s in a distance of 0.45 m. If the combined mass of the person and the kayak is 69 kg, what is the magnitude of the net force acting on the kayak?
Wednesday, February 25, 2015 at 1:17pm

Physics
A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28∘ above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down ...
Wednesday, February 25, 2015 at 1:17pm

physics
The 1.1kg physics book in figure is connected by a string to a 250g coffee cup. The book is given a push up the slope and released with a speed of 2.5m/s . The coefficients of friction are μs =0.50 and μk =0.20. How far does the book slide?
Wednesday, February 25, 2015 at 1:11pm

physics
A skateboarder in a death defying stunt decides to launch herself from a ramp on a hill. The skateboarder leaves the ramp at a height of 1.4m above the slope, traveling 15m/s and at an angle of 40 degrees to the horizontal. The slope is inclined at 45 degrees to the horizontal...
Wednesday, February 25, 2015 at 12:56pm

Physics
Six point charges of equal magnitude q are at the corners of a regular hexagon that has sides of length d. All the odd number charges are positive and all the even number charges are negative (so that there are three positive and three negative charges and there is a negative ...
Wednesday, February 25, 2015 at 11:54am

physics
Why is blood pressure called excess pressure? Use the term true pressure. Thank you for your help!
Wednesday, February 25, 2015 at 11:37am

physics
What is the relationship between the coefficient of friction and the time that it takes the object to reach the bottom of the ramp?
Wednesday, February 25, 2015 at 10:50am

physics
An employer found out that his worker has been stealing money from his business for some time. though he has not caught him red handed, the overwhelming circumstantial evidences leaves no doubt at all about the theft. He is the only worker and the money gets missing only after...
Wednesday, February 25, 2015 at 9:30am

physics
Why do we measure blood pressure in mercury?
Wednesday, February 25, 2015 at 9:26am

physics
A copper block of mass 500gm and spcific heat0.1cal/gm celcius is heated from30degrees to 290degrees celcius the thermal capacity of block is
Wednesday, February 25, 2015 at 9:23am

physics
Water flows over the edge of a waterfall at a rate of 1.2 x 106 kg/s. There are 50.0 m between the top and bottom of the waterfall. How much power is generated by the falling water by the time it reaches bottom?
Wednesday, February 25, 2015 at 9:05am

physics
A skateboarder in a death defying stunt decides to launch herself from a ramp on a hill. The skateboarder leaves the ramp at a height of 1.4m above the slope, traveling 15m/s and at an angle of 40 degrees to the horizontal. The slope is inclined at 45 degrees to the horizontal...
Wednesday, February 25, 2015 at 8:15am

Physics
The HCl molecule consists of a hydrogen atom (mass 1u) and a chlorine atom (mass 35u). The centres of the two atoms are separated by 127pm (=1.27x10-10m). What is the moment of inertia, I, about an axis perpendicular to the line joining the two atoms which passes through the ...
Wednesday, February 25, 2015 at 7:13am

Physics
I have a resistor of 230 [Ohm] and apply a voltage across it of 9 [Volt]. What is the current through the resistor in milliAmp? [mA]
Wednesday, February 25, 2015 at 1:53am

Physics help
Describe each type of item tested in terms of its V vs I being "Ohmic" or not. Use one sentence per item-type tested. Item types tested are Resistors, Coil, Diode, Capacitors, and Light Bulb.
Wednesday, February 25, 2015 at 1:29am

Physics
Two blocks are connected by a string on a pulley. One block is on an incline, and the other is hanging. The smooth inclined surface makes an angle of 35 ∘ with the horizontal, and the block on the incline has a mass of 5.7 kg. The mass of the hanging block is m = 4.0kg...
Wednesday, February 25, 2015 at 12:21am

Physics
two small spheres lie 1.5 meters apart and carry identical charges. How large is the charge on each if a sphere experiences a force of 2.0 N.
Tuesday, February 24, 2015 at 11:57pm

physics
A 0.125 kg mass is attached to a spring and undergoes simple harmonic motion with a pe- riod of 0.41 s. The total energy of the system is 2.5 J. Find the amplitude of the motion. Answer in units of m.
Tuesday, February 24, 2015 at 11:11pm

Physics
The bird perched on the swing shown below has a mass of 42.7 g, and the base of the swing, y = 7.54 cm below the hook, has a mass of 133 g. The swing and bird are originally at rest, and then the bird takes off horizontally at 2.04 m/s. How high will the base of the swing rise...
Tuesday, February 24, 2015 at 11:07pm

Physics
A 2050 kg car traveling at 11.0 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 3.10 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the road, assuming that ...
Tuesday, February 24, 2015 at 11:02pm

physics
A block with a mass of 4.25 kg is placed at rest on a surface inclined at an angle of 44.8° above the horizontal. The coefficient of static friction between the block and the surface is 0.520, and a force of magnitude $F$ pushes upward on the block, parallel to the ...
Tuesday, February 24, 2015 at 8:42pm

physics
The half-life of carbon-14 is 5730 years. How much of a 50 g sample of carbon-14 is present after 11,460 years?
Tuesday, February 24, 2015 at 7:57pm

Physics
The crane shown in the drawing is lifting a 170-kg crate upward with an acceleration of 1.1 m/s2. The cable from the crate passes over a solid cylindrical pulley at the top of the boom. The pulley has a mass of 130 kg. The cable is then wound onto a hollow cylindrical drum ...
Tuesday, February 24, 2015 at 6:56pm

Physics
at a drag race a jet car travels 1/4 miles in 5.2 seconds. what is the final speed of the car and its acceleration?
Tuesday, February 24, 2015 at 5:35pm

physics
A golfer takes two putts to sink the ball, one is (81.6 ft, 31.7 degrees N of E) and the other is (3.20 ft, 53.4 degrees W of N). What is the displacement of the single putt that would sink the ball on the first try? Well, what I did was make a diagram of the two vectors, I ...
Tuesday, February 24, 2015 at 4:55pm

Physics
A 5.0x10^-3 m^3 container holds 4.90 g gas when the pressure is 75.0 cm Hg and the temperature is 50.0 degrees C. What will be the pressure if 6.00 g of this gas is confined to a 2.0x10^-3 m^3 container at 0.0 degrees C? Do I simply need to use the combined gas law or does the...
Tuesday, February 24, 2015 at 4:34pm

Physics
A charge of +444 μC is fixed at the center of a square that is 0.47 m on a side. How much work is done by the electric force as a charge of +5.8 μC is moved from one corner of the square to any other empty corner?
Tuesday, February 24, 2015 at 2:59pm

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