physics please HELP !
130,011 results, page 4

Science
guys, please give me any ideas for a investigatory project in physics ??? 
Physics
METEOR SHOWER (Acceleration or Not) PLease choose the correct answer. 
physics
A 20 g fridge magnet is being held onto the fridge by a 0.9 N force. coefficient of kinetic friction is 0.3 . (please include an FBD when giving the solutions) a. calculate the friction acting on the magnet. b. calculate the weight of the magnet c.the acceleration of the ... 
Pure math,Life science,Geography and History
Hi I'm grade10 and I was wondering if you's could help Me to get a career examples after matric because my school took away our Physics for unknown reasons so insted of Physics or another subject that would help you in the future they gave us History please help me with a ... 
Physics
A 44.0kg woman stands at one end of a 148 kg raft that is 6 m long. The other end of the raft is 0.5 m from a pier. (a) The woman walks toward the pier until she gets to the other end of the raft and stops there. Now what is the distance between the raft and the pier? in m ... 
Physics
Help Needed Please... After changing a tire on your car, you need to tighten one of the lug nuts to the proper specified torque of 49.0 N m. How much force is needed if you're pushing down on the end of the 39.0 cm long torque wrench at an angle of 120° with respect to the ... 
Physics
Help Needed Please... After changing a tire on your car, you need to tighten one of the lug nuts to the proper specified torque of 49.0 N m. How much force is needed if you're pushing down on the end of the 39.0 cm long torque wrench at an angle of 120° with respect to the ... 
physics help please...
A light spring of constant k = 170 N/m rests vertically on the bottom of a large beaker of water. A 5.70 kg block of wood (density = 650 kg/m3) is connected to the spring and the massspring system is allowed to come to static equilibrium. What is the elongation, ÄL, of the ... 
Physics repost
FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance has a value of 4.60 x 10^7 H, determine the range of capacitance values that are needed so the antenna can pick up all the radio waves broadcasted ... 
Physics please clarify
Posted by Mary on Monday, September 3, 2007 at 12:40pm. download mp3 free instrumental remix A charge of +2q is fixed to one corner of a square, while a charge of 3q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center... 
physics help 2 please!!
Mass A (7 kg) and mass B (10 kg) sit on the ground, 2 m apart. a.) What is size of the the gravitational force: on A from B? N on B from A? N b.) What is the size of the gravitational force: on A from the Earth? N on B from the Earth? N once again, i am using the wrong ... 
SCIENCE
science concept map!! test tubes matter oxygen please please please please HELP!! 
Physics Help Please!!!!
a pitcher throws a softball horizontally from a height of 1.25 m and notes that it strikes the ground a distance of 15 m from the point where it was thrown. how long did it take the ball to reach the ground? what was the velocity at which the ball was thrown? what was the ... 
Physics Help Please!!!!
a pitcher throws a softball horizontally from a height of 1.25 m and notes that it strikes the ground a distance of 15 m from the point where it was thrown. how long did it take the ball to reach the ground? what was the velocity at which the ball was thrown? what was the ... 
world history
I need help in s.s . can you please help me with a family tree ?? can you please show me a family tree of king Henry the viii . can you please show me his wifes and life in an actual tree with some pictures !!!!!!!!!!! please please !!!!!!! i am beging you its due tommrow , i ... 
Physics Help please
If we witness events taking place on the moon, where gravitation is weaker than on Earth, would we expect to see a gravitational red shift or a gravitational blue shift? and Explain please a)blue shift b)red shift c)no shift 
Physics
Can someone please help me with this physics question? I have most parts of the question answered already. (i only need help with b and c). Thanks The motion of a body is described by the equation 3.50 sin (0.100ðt)where t is in s and y is in m. (a) Find the amplitude 3.50 m... 
Physics
If an object is thrown in an upward direction from the top of a building 1.60 x 102 ft. high at an initial velocity of 21.82 mi/h, what is its final velocity when it hits the ground? (Disregard wind resistance. Round answer to nearest whole number and do not reflect negative ... 
Physics
A roller in a sheetmetal processing plant has a diameter of 1.77 m and a mass of 5871 kg. Assume the roller is a solid cylinder. a) What is the moment of inertia of the roller? b) What is the kinetic energy of the roller when it spins at 4.28 rad/s? Please provide all work ... 
Physics
In a lightning bolt, 16 C of charge flows in a time of 1.5 103 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 24 m from the bolt? please tell me where I am going wrong. B... 
physics
The table shows the power ratings of four electrical appliances. Fan heater 2 kW Oven 3 kW Kettle 2 kW Microwave oven 0.75 kW The kettle is used for a total of 30 minutes a day. It has an efficiency of 0.9 What is the cost of the energy wasted by the kettle each day? 1 0.6 p 2... 
Physics
I have 2 questions...one can someone please read my question posted around noon today called Lab for physics? Thanks..and secondly, I have to derive some equation. I am supposed to show a=gtantheta and find this from m (mass) L (length). The question also mentions the verical ... 
Physics, Electricity and Magnetism, Sciences
Two small pith balls, each of mass m = 17.4 g, are suspended from the ceiling of the physics lab by 1.2 m long fine strings and are not moving. If the angle which each string makes with the vertical is = 17.9°, and the charges on the two balls are equal, what is the magnitude... 
Physics
1. How can voltage be induced in a wire? Can someone help me figure out an answer to this? please 
gr.10 physics
could someone please help me with this? Rearrange and simplify for r when A=3.14r^2 by the way, 3.14 is supposed to be pi, but i don't know how to write it... 
Physics
Why is the momentum in a spaceship traveling in space not conserved? Can someone please explain? thanks 
Physics
How do you calculate error analysis? For example; 200 + 5% Please explain if possible 
Physics
Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h? 
physics
density= mass/volume=150kg/(30*20*500) in kg/cm^3 what is kg/cm^3 and can you explain how to use this please 
PHYSICS
Can someone please explain friction. i don't even understand the concepts parts! 
Physics please help!!
A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy? 
Physics please help!!
A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy? 
Physics please help!!
A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy? 
Physics
How much energy is deposited in the body of a 78 kg adult exposed to a 2.9 Gy dose? Please and thank you. 
physics
please help me i don't know the answer. What is the mathematical relationship between frequency and wavelength for an EM wave? 
physics
application of and the concept of heat and temperature in technology.please can u give me the link.thanks 
physics please help!
find the speed of sound (in m/s) at 35°C at 1 atm pressure in dry air 
Physics
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? Help me get this answer please. 
physics
what is the strength of the electric field at (x,y)=(3.0m, 3.0m)? where v=(120x^2290y^2)V, where x and y are in meters. Please explain. thanks 
Physics
1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection? 
physics
state the precision of the measured quantities 1. 353g 2. 6.00cm please explain 
Physics
Two vector of 5N and 6N flow they oriented to get the resultant of 7N,9N?( please solve this question) 
STUDENTS: PLEASE READ
Please read Writeacher's post to All Students. Using HELP in your subject line doesn't give us a clue about what you need. As Writeacher said, please use a specific subject heading  like MATH, ENGLISH GRAMMAR, PHYSICS. An even better subject heading would be more specific... 
Physics(Please respond)
1) A roller coaster (398 kg) moves from A (3.82 m above the ground) to B (29.4 m above the ground). Two nonconservative forces are present: friction does 1.82 x 104 J of work on the car, and a chain mechanism does +5.49 x 10^4 J of work to help the car up a long climb. What ... 
PHYSICS PLEASE HELP ASAP
When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried so many times i keep ... 
physics please help
In a physics laboratory experiment, a coil with 170 turns enclosing an area of 10cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field. The rotation takes 5.0×10^2 s . The earth's ... 
Physics help please!
The pressure of a fixed quantity of an ideal gas was held constant. The initial volume was 8.00 cubic meters and the final volume was 2.50 cubic meters. What was the final temperature in kelvins if the initial temerature was 188 degrees fahrenheit... Please walk me through ... 
AS Physics
A driver leaves his car without applying the hand brakes on a road inclined at an angle of 25 degrees. The car starts to roll down the road with the driver chasing from behind after moving a distance of 20 m the speed of the car is 5.0 ms1. Calculate the coefficient of static... 
Physics(Please help)
A person is riding a bicycle, and its wheels have an angular velocity of 26.0 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is 17.6 revolutions. (a) How much time does it take for the bike ... 
Physics please help
A 195.0N sign is suspended from a horizontal strut of negligible weight. The force exerted on the strut by the wall is horizontal. Draw an FBD to show the forces acting on the strut. (Do this on paper. Your instructor may ask you to turn in this work.)The angle is 30 degree ... 
physics please help??
I know how to do this problem, but I am having a difficult time figuring out the distance . I thought that from wire 1 to P2 the distance is 45 cm, and the distance from wire 2 to the p2 the distance is 35 cm. However, I believe I am wrong, can someone please explain o me ... 
Physics Help, Please
A physics student is pulling on a 20 kg box that is sliding on the floor. The student applies a pulling force of 100 N using a rope at angle 30o from the horizontal. The coefficient of kinetic friction between the box and the floor is 0.4. The acceleration of the box is ... 
physics help please!!!
A bungee jumper with mass 63.5 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 40.0 s. He finally comes to rest 28.5 m below the level of the bridge. Calculate the spring stiffness constant AND ... 
Physics
As part of a physics experiment, you stand on a bathroom scale in an elevator. Though your normal weight is 690 N, the scale at the moment reads 588 N. (a) Is the acceleration of the elevator upward, downward, or zero? (b) Calculate the magnitude of the elevator's acceleration... 
Physics Help PLEASE!!!
A spring that is 0.7 m in length elongates to 1.06 m when a 20 Newton force is exerted to stretch the spring. By how much more does the spring stretch when an additional 8 Newtons of force is exerted on it? 1.01 0.053 0.072 0.45 0.144 0.561 0.736 1.06 I think there are 3 parts... 
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time graph and if you can ... 
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time graph and if you can ... 
Physics Help me Someone plz
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it? t= light years I got 2.4x10^8 light years but its wrong please help me out...thank you Physics Plz help me  Anon, Monday, May 6, 2013 at 9:17pm 5.98x10^6 Thatz still wrong Physics... 
AP PHYSICS >>>please help
HOW WOULD YOU integrate this equation between zero and pi/2 1/(1+(tan^2008)xdx 
Physics
Runners in the 100m dash use starting blocks. Explain what this device does. PLEASE HELP. 
physics
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :) 
physics
please shelp me with this problem what is the stopping potential (V) if the wavelength of the incident light is 400 nm?? 
Physics, PLEASE HELP!!
A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x? 
physics
Help me please to Find the tension in the two wires that supoort the light fixture. M=13 kg, è=43 degrees???!! 
physics
What is the mass of a lead sinker witha volume of 3cm3? please show work Thank you 
physics! please help!
A car accelerates from rest at 4.9 m/s2. How much time does it need to attain a speed of 6 m/s? 
PHYSICS
a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help 
physics ! HELP PLEASE !!!!1
what are the methods of computing the veolicty of a particle in one dimensona motion from a graph ? 
Physics
Identify the causes of conductive and sensorineural hearing loss. I have no idea. Please help. 
Physics Help Please!
A microwave oven operates at 2.80GHz . What is the wavelength of the radiation produced by this appliance? 
Physics
Find the length of a simple pendulum that completes 16.0 oscillations in 52.0 s. CAN YOU PLEASE EXPLAIN SPECIFICALLY , THANK YOU! 
Physics
How can we find the resultant force if the mass and SPEED are given?? Give me the formula please!! 
Physics "scientists"
* JJ Thomson * a) How does his experiment of cathode ray tube relates to electrostatics? >> PLEASE HELP ME!! :( :) 
physics
In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can? 
PhysicsPLEASE HELP
A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? 5.8 km/hr 6.0 km/hr 2.0 km/hr 1.0 km/hr Thank you very much!! 
PHYSICS topic is pressure
Why does a person feel difficult to breathe when he is in a deep well? Please answer!!! 
As physics
General braking distance formula /working out please clearly say. 
PHYSICS HELP
If the external world does work on the system, the quantity of work is negative or positive? I said it was positive and Bob Pursley said I was right, but a Physics student said that it is negative. Please help if you can.. 
physics As
The table below shows how the braking distance x for a car depends on its initial speed u u / ms1 5.0 10 20 4 x / m 2.0 8.0 32 128 the reaction time of a driver is 0.60s. Calculate the sopping distance of the car when u= 30ms1. The mark scheme says: Thinking distance= 30 X 0... 
Physics.. please help!!!!!
A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball hits ... 
physics help please!!**
A typical GPS (Global Positioning System) satellite orbits at an altitude of 4.0 107 m. (Astronomical data needed for this problem can be found on the inside back cover of the text.) (a) Find the orbital period of such a satellite. hours (b) Find the orbital speed of such a ... 
Physics please help
This is for my earth science class I have not had physics If a person pulls on a cart to the right with a force of 10 N and a second person pulls to the left with a force of 3 N, what is the net force(+direction)on the cart? I came up with 130 N downward force 
physics
two point charges are 10.0 cm apart and have chargeso of 2.0 uC (micro)and 2 uC, respectively. What is the magnitude of the electric field at the midpoint between the two charges? i think the answr is zero.. but i don't understand how to get to it...can you please show me in ... 
physics
a 2.5 kg rifle fires a 20 g bullet at 400 m/s. What is the magnitude of the recoil velocity of the rifle? I still don't understand. Could you please help with a formula? Thank you. physics  drwls, Monday, February 7, 2011 at 6:38pm Try using conservation of momentum. recoil ... 
physics
can someone help me with physics lab homework please: load 300 g at 60 degree mass at 180 deg 150 g mass at 270 deg 260 g for step two resolution of 300g at 60 degree f load= fx'= fy'= 
English
1. Please water the plants while I am away. 2. Please water the plants while I am absent. 3. Please water the plants in my absence. 4.Please water the plants while I am not here. 5. Please water the plants while I am out. 6. Please water the plants while I am on a business ... 
College Physics
I keep getting answer wrong. I don't know what I did wrong. I really need help please. I need help with 1 question. Can you help with this please if you don't mind? 1) Suppose you are given that z = c y^3/x^2 where c is some number. For a particular value of c, x and y, z is ... 
Physics Please help out
Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current... 
please help if you can please
i cant really find the exact thing on google.please a little help please,im begging you thanks help me find a exact link for laws and regulations on opeing up a business in hong kong a. import/export b. joint venture c. direct investment 
Physics conceptional question Please help
Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current... 
organic chemistry
Which has a higher Rf value Ibuprofen or mefenamic acid? please please please.i need your answers. 
Algebra PLEASE HELP
8. Which of the following expressions is equivalent to (7)^5 7 * 7 * 7 * 7 * 7 7 * 5 (7) * 7 * (7) * 7 * 7 5 * 5 * 5 * 5 * 5 * 5 * 5 PLEASE HELP ONE OF THESE ARE SUPPOSED TO BE EQUAL TO (7)^5 = 16807 BUT A AND C ARE :(( I'M SO CONFUSED PLEASE HELP :( 
Physics HELP PLEASE!
A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal. a) find the x and y components of the velocity b) find the time the ball is in the air c) find the horizontal distance the ball travels before hitting the ground d) ... 
physics please HELP !
can you please help me with this please. thank you. A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle delta and the ... 
physics 12
im stuck i have no clue where to start, please help me i just know the givens and some claculations. question: kevin stands on he top of a buiulding and he throws an aboject up into the air at a velocity of 16.0m/s at an angle of 25 degrees to the horizontal. if the building ... 
Math help please last question
Solve the equation. 10. 2(4x 4) + 2(3x + 2) = 360 Can you please help me on this problem? Could you explain it please? I'm confused... 
English
1. Who's calling, please? 2. Who's speaking, please? 3. Who's this, please? .................................. In a telephone conversation, are all correct? The same? 
Physics
The sun outputs 1380 W/m^2 of energy at the earth's surface. A small rectangular las has the following dimensions: 1km wide, 1.4km long, and 300m deep A) Calculate the thermal energy added to the lake if exposed to 12h of direct sunlight. B) calculate the increase in ... 
Physics
I had this question last night for Dr. BobA fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it touches ... 
Algebra Help! Please
Ok so I did what you told me reiny but I cant figure out number three which is here 10x  2  6x = 3x  2 + x Please show how You did it please?