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October 26, 2014

Homework Help: Science: Physics

Recent Homework Questions About Physics

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physics
The free-fall acceleration on Mars is 3.7 m/s2. (b)What length of pendulum would have a 0.9 s period on Mars?
Monday, November 26, 2012 at 5:19pm

physics
What length of pendulum has a period of 0.9 s on Earth?
Monday, November 26, 2012 at 5:06pm

physics
What length of pendulum has a period of 0.9 s on Earth?
Monday, November 26, 2012 at 4:37pm

Physics
The surface of the Sun is approximately 5,650 K, and the temperature of the Earth's surface is approximately 295 K. What entropy change occurs when 6,000 J of energy is transferred by heat from the Sun to the Earth? (J/K)
Monday, November 26, 2012 at 4:29pm

Physics
A 95.1-g ice cube is initially at 0.0°C. (a) Find the change in entropy of the cube after it melts completely at 0.0°C. Hint: The latent heat of fusion for water is 3.33 105 J/kg. answer in J/kg (b) What is the change in entropy of the environment in this process? ...
Monday, November 26, 2012 at 4:28pm

Physics
A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work? (kg)
Monday, November 26, 2012 at 4:28pm

Physics
In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle? (J) (b) Find the thermal efficiency of the engine. (%)
Monday, November 26, 2012 at 4:27pm

Physics
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. (a) What is the work done on the gas? (b) What is the change in its internal energy?
Monday, November 26, 2012 at 4:26pm

Physics
n a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. (a) Determine the heat transferred between her body and surroundings during this event. _____J (b) What does the sign of your answer to part (a) indicate? select one (i)There ...
Monday, November 26, 2012 at 4:25pm

Physics
One mole of an ideal gas initially at a temperature of Ti = 7.4°C undergoes an expansion at a constant pressure of 1.00 atm to eight times its original volume. (a) Calculate the new temperature Tf of the gas.______J (b) Calculate the work done on the gas during the ...
Monday, November 26, 2012 at 4:24pm

physics
The position of an object connected to a spring varies with time according to the expression x = (6.2 cm) sin (9.1ð t). Find (a) the period of this motion
Monday, November 26, 2012 at 4:22pm

physics
A cart of mass 223 g is placed on a frictionless horizontal air track. A spring having a spring constant of 10.20 N/ m is attached between the cart and the left end of the track. When in equilibrium, the cart is located 11.0 cm from the left end of the track. If the cart is ...
Monday, November 26, 2012 at 4:15pm

university, physics
A coffee maker is rated at 1200 W, a toaster at 1100 W, and a waffle maker at 1400 W. The three appliances are connected in parallel to a common 120-V household circuit. (a) What is the current in each appliance when operated independently? (b) What total current is delivered ...
Monday, November 26, 2012 at 4:06pm

physics
A cart of mass 223 g is placed on a frictionless horizontal air track. A spring having a spring constant of 10.20 N/ m is attached between the cart and the left end of the track. When in equilibrium, the cart is located 11.0 cm from the left end of the track. If the cart is ...
Monday, November 26, 2012 at 3:58pm

physics
A cart of mass 223 g is placed on a frictionless horizontal air track. A spring having a spring constant of 10.20 N/ m is attached between the cart and the left end of the track. When in equilibrium, the cart is located 11.0 cm from the left end of the track. If the cart is ...
Monday, November 26, 2012 at 3:56pm

Physics
The surface of the Sun is approximately 5,650 K, and the temperature of the Earth's surface is approximately 295 K. What entropy change occurs when 6,000 J of energy is transferred by heat from the Sun to the Earth? ______J/K
Monday, November 26, 2012 at 3:55pm

PHYSICS - PLEASE HELP
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.53 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.12 m/s. What is ...
Monday, November 26, 2012 at 3:28pm

Physics
When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy to thermal energy. If a 1750-kg automobile traveling at 28 m/s comes to a halt, how much does the temperature rise in each of the four 8.0 kg iron...
Monday, November 26, 2012 at 3:09pm

PHYSICS
A 5.30-g lead bullet traveling at 390 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of the bullet?
Monday, November 26, 2012 at 3:08pm

physics
The block in the drawing has dimensions L0×2L0×3L0,where L0 =0.5 m. The block has a thermal conductivity of 150 J/(s·m·C˚). In drawings A, B, and C, heat is conducted through the block in three different directions; in each case the temperature ...
Monday, November 26, 2012 at 3:03pm

Physics Can you help me get started
A 24-g ice cube floats in 180 g of water in a 100-g copper cup; all are at a temperature of 0°C. A piece of lead at 92°C is dropped into the cup, and the final equilibrium temperature is 12°C. What is the mass of the lead? (The heat of fusion and specific heat of ...
Monday, November 26, 2012 at 2:38pm

Physics
A spaceship of mass 2.3×10^6 kg is cruising at a speed of 6.0×10^6 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.2×10^5 kg, is blown straight backward with a speed of 2.0×10^6 m/s. A second ...
Monday, November 26, 2012 at 2:38pm

Physics
A 1.1 kg block slides along a friction-less surface at 1.4 m/s. A second block, sliding at a faster 4.3 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.6 m/s. What was the mass of the second block?
Monday, November 26, 2012 at 2:28pm

Physics
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.53 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.12 m/s. What is ...
Monday, November 26, 2012 at 2:24pm

Physics
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.53 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.12 m/s. What is ...
Monday, November 26, 2012 at 2:21pm

PHYSICS
Lake Erie contains roughly 4.00 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of water from 9.0°C to 11.0°C? J (b) How many years would it take to supply this amount of energy by using the 1250-MW exhaust energy of an ...
Monday, November 26, 2012 at 2:02pm

PHYSICS
The highest recorded waterfall in the world is found at Angel Falls in Venezuela. Its longest single waterfall has a height of 807 m. If water at the top of the falls is at 16.7°C, what is the maximum temperature of the water at the bottom of the falls? Assume all the ...
Monday, November 26, 2012 at 2:00pm

Physics
A 1.0 102 g piece of copper at a temperature of 460 K and a 2.0 102 g piece of aluminum at a temperature of 2.2 102 K are dropped into an insulated bucket containing 5.0 102 g of water at 280 K. What is the equilibrium temperature of the mixture? (Use the specific heats found ...
Monday, November 26, 2012 at 1:03pm

physics
The spring of the pressure gauge shown in the figure below has a force constant of 1,080 N/m, and the piston has a radius of 1.43 cm. As the gauge is lowered into water, what change in depth causes the piston to move in by 0.750 cm?
Monday, November 26, 2012 at 12:39pm

physics/optics
Transpose the prescription -0.75DS/-3.25DCx30 to the toric form with a capstan-form surface which has a +2.50D base curve
Monday, November 26, 2012 at 12:03pm

physics
nucleus of oxygen-15 undergoes electron capture. Write out the reaction equation and determine the identity of the daughter nucleus
Monday, November 26, 2012 at 10:59am

physics
nucleus of oxygen-15 undergoes electron capture. Write out the reaction equation and determine the identity of the daughter nucleus
Monday, November 26, 2012 at 10:58am

physics
nucleus of oxygen-15 undergoes electron capture. Write out the reaction equation and determine the identity of the daughter nucleus
Monday, November 26, 2012 at 10:58am

Physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 60.8-kg man just before contact with the ground has a speed of 5.31 m/s. (a) In a stiff-legged ...
Monday, November 26, 2012 at 9:59am

physics
if the masses remain the same ,but the separation is decreased to one-half of the original distance . what happens to the gravitation force?
Monday, November 26, 2012 at 9:42am

physics
12. The ratio of the tensile (or compressive) strength to the density of a material is a measure of how strong the material is “pound for pound.” (a) Compare tendon (tensile strength 80.0 MPa, density 1100 kg/m3) with steel (tensile strength 0.50 GPa, density 7700 ...
Monday, November 26, 2012 at 9:21am

Physics
An antitank weapon fires a 3.0 kg rocket which acquires a speed of 50. m/s after traveling 90. cm down a launching tube. Assuming the rocket was accelerated uniformly, what force acted on it?
Monday, November 26, 2012 at 9:04am

physics
A person with a density of 980 kg/m3 floats in seawater of density 1025 kg/m3. What fraction of the person is submerged?
Monday, November 26, 2012 at 7:31am

math, trigonometry, physics
Before a tidal wave the sea level usually drops first leaving the seabed exposed. (normally about 30 feet below sea level) then it rises an equal distance above sea level. Waves hitting a city with a maximum height of 38.9 meters. The cycle of rise and fall was 26-35 minutes ...
Monday, November 26, 2012 at 2:30am

math, trigonometry, physics
Before a tidal wave the sea level usually drops first leaving the seabed exposed. (normally about 30 feet below sea level) then it rises an equal distance above sea level. Waves hitting a city with a maximum height of 38.9 meters. The cycle of rise and fall was 26-35 minutes ...
Monday, November 26, 2012 at 1:54am

Physics
A cart on an airtrack is moving at 0.5m/s.when the air is suddenly turned off the cart comes to rest after traveling 1m the experiment repeated but now the cart is moving at 1m/s when turned off .how far does the cart travel the cart travel before coming to rest?
Monday, November 26, 2012 at 12:11am

physics
When you stand on your tiptoes, your feet pivot about your ankle. As shown in the figure, the forces on your foot are an upward force on your toes from the floor, a downward force on your ankle from the lower leg bone, and an upward force on the heel of your foot from your ...
Sunday, November 25, 2012 at 10:42pm

physics
Two 0.61 kg basketballs, each with a radius of 13 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to the following (a)1 meter (b) 10 meters
Sunday, November 25, 2012 at 10:35pm

Physics
A radioactive nucleus at rest decays into a second nucleus, anelectron, and a neutrino. The electron and neutrino are emitted atright angles and have momenta of8.90×10−23 and5.35×10−23 , respectively. What is the magnitude of the momentum of the second(...
Sunday, November 25, 2012 at 10:26pm

Physics
Visible light is incident perpendicularly on a diffraction grating of 200 rulings/mm. What are the (a) longest, (b) second longest, and (c) third longest wavelengths that can be associated with an intensity maximum at theta=30 degrees?
Sunday, November 25, 2012 at 10:22pm

physics
A 5.1-kg bowling ball and a 8.4-kg bowling ball rest on a rack 0.50 m apart. (a) What is the force of gravity exerted on each of the balls by the other ball? (b) At what separation is the force of gravity between the balls equal to 2.0e-9 N?
Sunday, November 25, 2012 at 10:13pm

Physics
A car moving at 43 km/h skids 16 m with locked brakes. How far will the car skid with locked brakes at 129 km/h?
Sunday, November 25, 2012 at 10:06pm

physics
Turning a doorknob through 0.53 of a revolution requires 0.10 J of work. What is the torque required to turn the doorknob?
Sunday, November 25, 2012 at 9:52pm

physics
How much work must be done to accelerate a baton from rest to an angular speed of 8.0 rad/s about its center. Consider the baton to be a uniform rod of length 0.84 m and mass 0.64 kg.
Sunday, November 25, 2012 at 9:51pm

Physics
If a supersaturated sugar solution is allowed to evaporate slowly, sugar crystals form in the container. Hence, sugar molecules go from a disordered form (in solution) to a highly ordered, crystalline form. Does this process violate the second law of thermodynamics? Explain.
Sunday, November 25, 2012 at 9:47pm

Physics
Two identical ice skaters are holding onto opposite ends of a very long spring with a spring constant of 650 N/m. While spinning in a circle, the skaters frequency of revolution is measured to be 0.85 Hz. Calculate the mass of the skaters. m = 45.6 kg
Sunday, November 25, 2012 at 9:26pm

Physics
A car traveling at constant speed safely negotiates a frictionless banked curved. Calculate the speed of the car when the road is banked at 20 degrees and the radius of its path is 50 meters. HINT – Do not rotate your axes. Answer v = 13.35 m/s
Sunday, November 25, 2012 at 9:25pm

physics
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 195-kg laser sensor which measures the thickness of the ice (see the drawing). The helicopter and the sensor move only in the horizontal direction and have a horizontal acceleration of ...
Sunday, November 25, 2012 at 9:16pm

physics
Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
Sunday, November 25, 2012 at 9:14pm

Physics
Carrying household appliances can be very difficult due to the weight and size. Some movers place the appliance on a dolly and move it around, however this can cause damage to floors, and it also does not work on stairs. A new technique is to utilize moving straps. These allow...
Sunday, November 25, 2012 at 9:07pm

Physics
You are the designer of a school bus and would like to know what the maximum stopping distance is that will ensure the students to remain in their seats. The coefficient of static friction for the passenger and the bus seat is .5, and the coefficient of kinetic friction for ...
Sunday, November 25, 2012 at 9:06pm

Physics
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of 50N. The person on the left has a mass of 45kg. The coefficient of kinetic friction between the box and the floor is .2, the coefficient of static ...
Sunday, November 25, 2012 at 9:05pm

Physics
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of 3.2N is applied to the larger block, what is the acceleration of the smaller block. Describe all external forces that are acting on the two blocks
Sunday, November 25, 2012 at 9:05pm

physics
Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
Sunday, November 25, 2012 at 9:04pm

physics
Which consumes more energy, a 1.5 kW hair dryer used for 10 min or a 10 W night light left on for 19 hr?
Sunday, November 25, 2012 at 8:47pm

Physics
An object moving with uniform acceleration has a velocity of 12m/s in the +ve x-direction,when its x-coordinate 3cm.if its x-coordinate 2sec. later is -5cm ,what is the acceleration?
Sunday, November 25, 2012 at 8:31pm

Physics. Easy question? Please help
What is the (a) maximum and (b) minimum total resistance value that can be obtained using three resistors whose values are 2.0 ohms, 4.0ohms and 6.0 ohms? The resistors can be used individually, in pairs, or all three at once. Is this a trick question? Is the answer 12 and 2?
Sunday, November 25, 2012 at 7:40pm

physics
A model airplane of mass 1.5 kg is attached to a horizontal string and flies in a horizontal circle of radius 5.8 m, making 2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The ...
Sunday, November 25, 2012 at 7:35pm

physics
An athlete swings a 3.06 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.82 m at an angular speed of 0.25 rev/s. What is the tangential speed of the ball? Answer in units of m/s
Sunday, November 25, 2012 at 7:34pm

physics
a 2.00kg copper plate with an initial temperature of 20.0 degrees Celsius slides with a constant velocity down a 150m long surface that is inclined at 30 degrees angle to the horizontal. If the mechanical energy lost by the system due to friction is absorbed by the copper to ...
Sunday, November 25, 2012 at 7:30pm

Physics, Please Help
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1025 kg. By using a lever arm (a piece of wooden board) and a fulcrum (or pivot point) the homeowner will have a better chance of moving the rock. The homeowner places the fulcrum 24.4 cm from the ...
Sunday, November 25, 2012 at 7:02pm

physics
A tank full of water has a height H = 12:5 m. A small hole is drilled into its side h = 2:5 m above the ground. What is the horizontal distance from the tank to the point where the water spout owing from the hole reaches the ground?and at what height must the hole be drilled ...
Sunday, November 25, 2012 at 6:56pm

Physics
The sum & difference of two non-zero vectors Ä & B are equal in magnitude.what can you conclude about these vectors?why?
Sunday, November 25, 2012 at 6:12pm

Physics
A skier squats low and races down a 14 degree ski slope. During a 5 s interval, the skier accelerates at 4.2 m/s2. What is the horizontal component of the skier’s acceleration (perpendicular to the direction of free fall)?
Sunday, November 25, 2012 at 6:04pm

physics
A child rides a toboggan down a hill that descends at an angle of 18.1 to the horizontal. The hill is 34.9 m long. What is the horizontal component of the child’s displacement?
Sunday, November 25, 2012 at 5:56pm

Physics
You have setup an experiment with two 50g masses attached to strings that are connected on opposite sides of a scale that measures weight in Newtons. a.) What is the reading on the scale? b.) The whole system is now moving to the left at a speed of 10m/s. What is the reading ...
Sunday, November 25, 2012 at 5:05pm

Physics
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of 3.2N is applied to the larger block, what is the acceleration of the smaller block. Describe all external forces that are acting on the two blocks
Sunday, November 25, 2012 at 5:01pm

Physics
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of 50N. The person on the left has a mass of 45kg. The coefficient of kinetic friction between the box and the floor is .2, the coefficient of static ...
Sunday, November 25, 2012 at 4:58pm

Physics
You are the designer of a school bus and would like to know what the maximum stopping distance is that will ensure the students to remain in their seats. The coefficient of static friction for the passenger and the bus seat is .5, and the coefficient of kinetic friction for ...
Sunday, November 25, 2012 at 4:55pm

Physics
Carrying household appliances can be very difficult due to the weight and size. Some movers place the appliance on a dolly and move it around, however this can cause damage to floors, and it also does not work on stairs. A new technique is to utilize moving straps. These allow...
Sunday, November 25, 2012 at 4:49pm

Physics
Police examine the scene of an accident involving two cars, which is parked. The skid marks of the moving car, which nearly came to a stop before the collision, is 80 meters long. The coefficient of kinetic friction between rubber and the pavement is about .80. Estimate the ...
Sunday, November 25, 2012 at 4:45pm

Physics
If the puck strikes the goalie's pads and stops in a distance of 4.14 cm, what average force is exerted on the pads? Answer in units of N. This is part three of three parts. 1st Part: A player strikes a hockey puck giving it a velocity of 39.486 m/s. The puck slides across...
Sunday, November 25, 2012 at 4:02pm

PHYSICS
COULD YOU FURTHER EXPLAIN HOW MANY BTU ARE REQUIRED TO RAISE THE TEMP OF500 GALLONS OF WATER FROM 70 DEGRESS TO 160 DEGREES FAHRENHIET
Sunday, November 25, 2012 at 3:28pm

physics
coull you explain in detail - how many BTU,S ARE REQUIRED TO RAISE THE TEMPERATURE OF 500 GALLONS OF WATER FRO 70 DEGREES TO 160 DEGREES FARAHIENT. THANKS
Sunday, November 25, 2012 at 3:13pm

physics
A duck has a mass of 2.70 kg. As the duck paddles, a force of 0.130 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.210 N in a direction of 52.0 ° south of east. When these forces begin to act, the velocity of the duck is 0....
Sunday, November 25, 2012 at 2:27pm

physics
An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
Sunday, November 25, 2012 at 2:05pm

physics
An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
Sunday, November 25, 2012 at 2:03pm

physics
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.46 x 105 m/s to a final velocity of 2.25 x 106 m/s while traveling a distance of 0.0803 m. The ...
Sunday, November 25, 2012 at 11:09am

physics
An airplane has a mass of 3.41 × 104 kg and takes off under the influence of a constant net force of 2.57 × 104 N. What is the net force that acts on the plane's 78.8-kg pilot?
Sunday, November 25, 2012 at 10:47am

science physics 2
Sharlyn walks 5km/hr, how long will it take her to travel 15km?
Sunday, November 25, 2012 at 7:39am

Physics
A car accelerates steadly from zero to 30m/s in a distance d & a time t, another car takes a time 3t to accelerate steadly from stationary to the same final velocity.what distance does the second car cover during the new the new acceleration?
Sunday, November 25, 2012 at 7:17am

science,physics
A ship is heading due north at 12km/h in a tide moving 5km/h westward. Determine the magnitude and direction of the resultant velocity of the ship?
Sunday, November 25, 2012 at 6:20am

PHYSICS 1 ..
as she pick up her riders a bus driver traverses four successive displacements represented by the expression (-6.30 b)i-(4.00 b cos 40)i-(4.00 sin 40)j+(3.00 b cos 50)i-(3.00 b sin 50)j-(5.00 b)j here b represents one city block,a convenient unit of distance of uniform size; i...
Sunday, November 25, 2012 at 5:29am

physics
you are to determine the amount of sugar dissolved in solution. how can you use polaroid filters to complete the task?
Sunday, November 25, 2012 at 3:57am

PHYSICS
What is the direction (vertical or horizontal) of the transmission axis of Polaroid sunglasses? Give the physical reason for your answer.
Sunday, November 25, 2012 at 3:50am

PHYSICS
What is the direction (vertical or horizontal) of the transmission axis of Polaroid sunglasses? Give the physical reason for your answer.
Sunday, November 25, 2012 at 3:49am

physics
a 10 kg mass is attached to one end of a string with a lenght of 5m and whirled in a horizontal circle overheadd at a rate of 1 revolution per second what is tension in the sring
Saturday, November 24, 2012 at 10:48pm

physics
a box with a mass of 10 kg slides on a surface at 30m/s the coeffiecent of kinetic friction between the box and the surface is 0.5 what is the amount of frictional force
Saturday, November 24, 2012 at 10:38pm

physics
ball 1 has a mass of 5kg and a ball 2 has a mass of 10kg they both are dropped off a 20m tower. the force of gravity on the first ball is F1 and the force of gravity on the second ball is F2 what is the ratio of F1 to F2
Saturday, November 24, 2012 at 10:02pm

physics
a cyclist completes a lap around a circular track at a speed of 10m/s in 40s what is the displacement of the cyclist
Saturday, November 24, 2012 at 9:31pm

physics
A stunt driver wants to make his car jump over eight cars parked side by side below a horizontal ramp a)With what minimum speed must he drive off the horizontal ramp? The vertical height of the ramp is 1.5m above the cars, and the horizontal distance he must clear is 20m . ...
Saturday, November 24, 2012 at 9:16pm

physics i really need help :(
A projectile is fired with an initial speed of 61.3m/s at an angle of 31.5° above the horizontal on a long flat firing range. a)Determine the maximum height reached by the projectile. b)Determine the total time in the air. c)Determine the total horizontal distance covered...
Saturday, November 24, 2012 at 8:19pm

physics PLEASE HELP!
The pilot of an airplane traveling 250km/h wants to drop supplies to flood victims isolated on a patch of land 190m below.
Saturday, November 24, 2012 at 8:15pm

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
Saturday, November 24, 2012 at 5:50pm

Physics
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 103 m/s. It moves for 3.00 s along its initial line of motion with an acceleration of 31.0 m/s2. At this time its engines fail and the rocket proceeds to move as a free body. (a) Find ...
Saturday, November 24, 2012 at 3:16pm

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