physics please HELP !
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college physics
Find the height from which you would have to drop a ball so that it would have a speed of 8.4 m/s just before it hits the ground. 
Physics
How would you change the following Galilean transformation equations in the case where a frame was moving both in the x and the y direction? (Use the following as necessary: x, y, z, Vx, Vy, t.) x' = y' = z' = t' = 
PHYSICS
WHAT IS MAGNITUDE OF NORMAL FORCE IN FIGURE WITH V=+3M/S +10n INSIDE BOX IS 5KG 
physics
An ambulance is going away from me @ 40mph with a siren @ 1000Hz.Will I heat a higher or lower frequency 
Physics
What must be the orbital speed of a satellite in a circular orbit 740 km above the surface of the earth? 
physics
What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 108 C, q2 = 2 x 108 C, q3 = 3 x 108 C, q4 = 2 x 108 C and d = 1 meter. 
physics
A football is kicked with an initial velocity v=9i+12j. Find the speed in (m/s) of the ball after 2.4s A) 9.2 B) 10.8 C) 12 D) 15 
PHYSICS
A BALL MOVES ROUND A CIRCLE WITH RADIUS OF 20CM CALCULATE THE DISTANCE 
physics
vander waal b for oxygen is 32 cm3/mol compute the diameter of o2 molecule. 
Physics
A tennis ball is thrown up in the air. It stays there for 12.1 seconds how fast did you throw it? 
physics
how much heat is needed to raise the temperature of 5kg of silver from 20 degrees C to 96 decgrees C? 
physics
two charged objects carry a negative charge of 2*10c. calculate their distance apart 
physics
How far will a car moving at 50 miles an hour travel in the time it takes to sneeze? 
physics
a 150giron ball at 95 Celsius is dropped into a cavity in a block of ice 
MathematicsinPhysics
If two objects were traveling at the speed of light would they explode on impact or pass through each other? 
Physics
Who was Isaac Newton? Write a brief paragraph about his life and work (include a bibliography) 
Physics
KNOWNS: Diverging (convex) mirror Radius of curvature = 60 cm (f = 30 cm) M = 1/5 Hi = 20 cm UNKNOWNS: Ho? Di? Do? EQUATIONS: 1/Do + 1/Di = 1/f M = Hi/Ho = Di/Do 
physics
Consider the following specific case of the system described in the example above. Suppose the angle θ is 78.0° and the mass of the ball is 7.00 kg. 
physics
what force is required to make an object of mass 500g accelerate at 4m/s2 (sqaured) ? 
physics
If one walks straight up a 10 degree incline, what is the height achieved after walking 10 kilometers ? 
physics
At what distance would the repulsive force between two electrons have a magnitude of 8.50 N? I have no idea how to do this problem... can someone help me please... 3x10^4/8.50? 
physics
Things around you are emitting infrared radiation that includes the wavelength 1.44 105 m. What is the energy of the photons? 
physics
a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object 
Physics
What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east? 
physics
The density of a solid ball with a mass of 231 g and a volume of 110 cm^3 is ____ g/cm^3. 
Physics
What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s^2? Is the answer 10. N? 
physics
Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 8600 km above the earth's surface. 
Physics
What are the horizontal and vertical components of a cat's displacement when it has climbed 5 m directly up a tree ? 
physics
compare and contrast sound and electromagnetic waves in terms of types, speed, etc. 
physics
compare and contrast sound and electromagnetic waves in terms of types, speed, etc. 
physics
how many electrons must be removed from an electrically neutral silver dollar to give a charge of +2.8 uc 
physics
compare and contrast sound and electromagnetic waves in terms of types, speed, etc. 
Physics
Will a cyclist coast farther if the lamp connected to his generator is turned off? Explain. 
Physics
An object is thrown upwards with a speed of 14.0 m/s. How long does it take to reach its maximum height 
physics
which object will have higher inertia a rock of 20kg or a hollow ball of 22kg 
physics
If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time? 
physics
A stone is thrown up with a velocity of 39.2 at an angle of 30° above the horizontal find at what times, it will be at a height of 14.7 
Physics
A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present? 
Physics
The maximum kinetic energy of a massspring system in SHM is equal to 
Physics
How does the conservation of mechanical energy explain why a planet in an elliptical orbit changes speed? 
physics
A ball strikes against the floor and returns with double velocity.In which type of collision is it possible? 
Physics
An object initially at rest experiences an acceleration of 9.8 m/s^2. How much time will it take to achieve a velocity of 58 m/s? 
Physics
1. Name three different kinds of graphs that are often used to plot information and discuss the value of each. i have no idea what the heck this means 
physics PLEASE HELP
how do you rearrange this equation weight=T1sin57+[T1cos57/cos23.5]xsin23.5 when you're trying to isolate T1????? 
physics
The equation y=5sin(3x4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion 
physics
how to calcula distance of a object in free fall if only the time it reaches the ground is given 
Physics
A car going 50 m/s undergoes an acceleration of 2 m/s^2 for 6 seconds what is the final velocity ? How far did it travel while it was accelerating? 
physics
in joule thomson effect,why the temperature of inversion leads to negative sign? 
physics
when looking at a window, you see two reflected images slightly displaced from eachother. Why/ Is it because glass is more dense. 
physics
Why electric dipole moment between two charges points from negative to positive charge. 
physics
A person can jump to a height of 1.5m on surface of earth. Find the velocity with which he jumps. 
Physics
how to find the average velocity and speed for an entire postion time graph 
physics
newyorks 33m tower oscilatesnin the wind with a period of 6.80s calculate the frequency 
physics
Estimate the magnitude of the electric field in a cell membrane with a thickness of 8nm 
physics
Good job "Drwls", your answer to my bowling ball question worked. Way to go! 
physics 8th grade
If a woman hasa mass of 50 kg calculate her weight in neutons 
Physics
An engine works between the two temperatures 200 C and 120 C. Calculate its efficiency in percentage? 
Physics
If a 65 kg sprinter can accelerate from a standing start to a speed of 12 m/s in 3 s, what average power is generated? 
physics
Find the density of a substance whose mass is 28 grams and whose volume is 4 cubic centimeters 
Physics
Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then? 
physics
What quantity of energy is represented by 250cm^3 of a gas 100N.m^2 when the temperature is kept constant 
physics
if an object has a mass of 615grams and a volume of 150cm3 is the density 5.86g/cm3 
Physics
a projectile is launched with an initial velocity of 60 m/s at an angle of 30 degrees above the horizontal. how far does it travel? 
physics
What is the temperature of an ideal gas whose molecules have an average translational kinetic energy of 3.90 1020 J? K 
PHYSICS
What is the inductance L of a 0.40 m long airfilled coil 3.2 cm in diameter containing 10,000 loops? 
physics
calculate the impulse necessary to stop a 1500 kg car travelling at 90km/hour 
PHYSICS
If the current in a 100 mH coil changes steadily from 25.0 A to 10.0 A in 375 ms, what is the magnitude of the induced emf? 
physics
calculate the force of a 300,00 kg jumbo jet that is accelerating 0.4m/square just before takeoff 
Physics
How much energy in kilocalories is expended against gravity alone by a 75 kg man climbing 1500 m up a mountain? 
physics
A giant bull running at 15 m/s slows at a rate of 2.4 meters per second per second. How long does it take it to stop? 
physics
An object is dropped onto the moon (gm = 5 ft/sec2). How long does it take to fall from an elevation of 250 ft.? 
physics
determine the thrust produced if 1.5 x 10^3 kg of gas exits the combustion chamber each second, with a speed of 4.00 x 10^3 m/s 
Physics
An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s? 
Physics
In what distance can a 25 gram bullet traveling at 250m/s be stopped by force of 5000N? 
physics
Much much force is needed to push a container with wheels that weighs 250 pounds 
PHYSICS RELLY QUICK QUESTION
is air resistnace negaitve because it opposes the motion? 
PHYSICS
Given a plastic rod and fur,explain how you would charge the electroscope positively and negatively. 
Physics
Calculate the tangential speed of the earth around the sun (assuming a circular orbit). 
physics
From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/h? 
physics
A fisherman's scale stretches 3.5 cm when a 2.1 kg fish hangs from it. What is the spring stiffness constant? 
Physics
How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 ìC? 
physics
If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 63 cm*29 cm*20cm, what would its mass be? 
physics
would someone in a lift feel lighter or heavier as it accelerated upwards? explain your answer. 
physics
How center mass affects an arrows distance traveled (include source) 
Physics
Calculate the average speed (in km/h)of Larry, who runs to the store 3.6 kilometers away in 40 minutes. 
physics
Determine the resulting temperature when 150g of ice at 0°C is mixed with 300g of water at 50°C 
physics
Results for: In An Ideal Transformer, The Voltage And Current Are 220V,2A And Those In Secondry Are 2000V, IA. The Value Of I Is? 
Physics
How much is needed to melt an ice cube, 3 centimeters on each side at 0 degree celcius? 
Physics
Determine the acceleration of an electron placed in a constant downward electric field of 4.0X10^5N/C. 
physics
The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second? 
physics 2
1)what potential differences must be applied across across a 1500 resistor in order that the resulting current be 50.mA? 
physics
What is the total mechanical energy of a 20 kg owl flying at 5.0 m/s through the air at a height of 25 m above the ground? 
physics
a truck moving at 100kph has a mass of 27000 kg. what force is necessary decelerate it at rate of 3 m/s²? 
physics
Two 2.5 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books? 
physics
What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway? 
PHYSICS!!
free body diagram of a 4 kg bucket accelerating downward 2 meters per second squared 
Physics
(a) Calculate the speed of a proton after it accelerates from rest through a potential difference of 285 V. 
physics
the angle between two forces of 32 AND (neutrons) and 47 N is 36 degrees. Find the magnitude of the resultant force 
physics
Calculate the coefficient of kinetic friction for tyre rubber on the road surface. 
physics
What is the frequency of the microwaves in a microwave oven? The wavelength is 12 cm. I have to give the answer in GHz