Math/Physics
214,834 results, page 42

physics
find the magnitude and direction of a combination of 48N east and 14N north. 
physics
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
Under what conditions will the projectile have the greatest velocity when it hits the ground? 
Physics
How much work is required to stop an electron (m = 9.11*10^31 kg) which is moving with a speed of 1.50×106 m/s? 
physics
A constant 6.0N net force acts for 4.0 s on a 12 kg object. what is the objects change of velocity 
Physics Help!!!
With the energy needed to warm up some amount of water from 26°C to 44°C, how high could you lift it? 
physics
a free body diagram of a boy sliding down a hill on a sled 
Physics
Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h? 
physics
a 27,000kb freight train starting at 12m/s then speeds up to 45 m/s in 35 seconds. what is the acceleration? 
Physics
How much work must be done to stop a 970 kg car traveling at 115 km/h? 
physics
if a 700kg piano us lifted 4.0 meters in 14 seconds, how much power is developed 
physics
if a 700kg piano us lifted 4.0 meters in 14 seconds, how much power is developed 
Physics
Question contains pictures: h t t p : / / g o o . g l / M H k y 1 (delete the spaces between the characters for the URL) 
physics
What is the acceleration of a 23 kg pail of cement that is pulled upward (not sideways!) with a force of 300 N? 
physics
How much work must be done to stop a 1040 kg car traveling at 111 km/h? 
Physics
A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make? 
physics
A pendulum is 1.0 m long and is drawn aside 30.0* and let go. Find the velocity at the lowest point. 
Physics
Write each number in scientific notation: 1) 15.01 ans. Is it 15.01 x 10 minus to the power of 2?? Am i wrong? 
physics
An RC car has a power rating of 12 W and a mass of 1.0 kg. How long would it take to reach 5 m/s ? thanks. 
Physics
Calculate the hang time of an athlete who jumps a vertical distance of 0.75 meter. 
physics
An object accelerates uniformly from rest at a rate of 2 m/s2 for 3 s and then 5 m/s2 for 15 s. Find its final velocity? 
physics
What force is needed to accelerate a child on a sled with the total mass of 43kg at 1.5m/s 
physics
What would be the resulting acceleration if a 7.0 kg shot put was launched with a force of 140 N? 
physics
If you throw a cigarette out a car window that is moving at 10 mph where will it land 
physics
If you throw a cigarette out a car window that is moving at 10 mph where will it land 
Physics
An automobile driver puts on the brakes and decelerates from 30.0 m/s to 0 in 10.0 s. What distance does the car travel? 
physics
two identical objects move with speeds of 5.0 m s and 25.0 m s. What is the ratio of their kinetic energies? 
physics
what happens to the force of frictionif the coefficient of friction was reduced by one thrid 
Physics
What is the volume of 3.25 moles of a gas at a temperature of 115 K and a pressure of 275 kPa? 
Physics
During the preindustrial era, what were the Carbon Dioxide levels like? 
Physics
What is the amount of CO2 added to the earth's atmosphere each year from fossil fuels? 
physics
Why does a 10 gram bullet have more momentum traveling at 200m/s than at 20m/s? 
physics
the rate at which position changes with time is called acceleration. true or false? 
physics
the rate at which position changes with time is called acceleration. true or false? 
physics
the rate at which position changes with time is called acceleration. true or false? 
Physics
The period of revolution of a satellite is 90min. What is the altitude above the surface of the earth? 
PHYSICS
what are the components of a vector that has a magnitude of 1.5 m at the angle of 35 degrees with respect to the positive x axis 
Physics
How do I find tangential speed with just radius, time and angular acceleration? 
physics
A 55 kg swimmer crosses a 100 m pool in 12 s. If she moves with a constant velocity, what is her momentum? 
Physics
How much time is needed for 5.0 N force to increase the speed of a 0.248 kg object from 12 m/s to 56 m/s? 
Physics
1.What is the acceleration of a projectile when instantaneous vertical velocity is zero at the top of its trajectory? 
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
Two point charges, +3.63 µC and 5.95 µC, are separated by 1.18 m. What is the electric potential midway between them? 
physics
Two point charges, +3.30 µC and 5.50 µC, are separated by 1.29 m. What is the electric potential midway between them? 
PHYSICS
WHAT IS MAGNITUDE OF NORMAL FORCE IN FIGURE WITH V=+3M/S +10n INSIDE BOX IS 5KG 
PHYSICS
WHAT IS MAGNITUDE OF NORMAL FORCE IN FIGURE WITH V=+3M/S +10n INSIDE BOX IS 5KG 
PHYSICS
Can someone please explain friction. i don't even understand the concepts parts! 
physics
how much energy was released by a 60 kg cannon shooting an 8 kg projectile horizontally at 50m/s? 
physics
lava ball is shot straight up at 28m/s what is speed after 3 seconds 
physics
If your car has a mass of 770 kg, how much force is required to accelerate it forward at 4.98 m/s2? 
Physics
What is the average power output of a weightlifter who can lift 260 kg to a height of 1.9 m in 1.8 seconds? 
physics
Calculate the net force needed to give an acceleration of 0,5m/s to a trolley with a mass of 1,5 kg 
physics
If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 81 km/h (50.3 mph or 22.5 m/s)? 
physics
What is the force of gravity between two spheres that have a mass of 6 kg and are separated by 36 m? 
physics
What is the force of gravity between two spheres that have a mass of m1 =13 kg, m2 = 49 kg and are separated by 35 m? 
physics
A ball is thrown vertically upward at 14.7 m/s. Show that its maximum height will be 11m. 
PHYSICS
A 69.0 firefighter climbs a flight of stairs 22.0 high. How much work is required? 
Physics
A 200N sign hangs and makes a 15.5 angle with the horizontal. What is the Tension in each rope? 
Physics
Is it true that a drop of water can pass through a solid travelling by 1800m/s2? 
Physics
Could a rubber band be used to replace the spring in a Hooke's Law experiment? Why/ why not? 
Physics
how high does a stone rise if it is initially thrown at a rate of 15m/sec 
Physics
How much work must be done to stop a 1250 kg car traveling at 105 km/h? 
Physics
If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated? 
physics
calculate the speed of an 7.3*10^4kg airliner with a kinetic energy of 1.4*10^9J. answer in units of m/s. 
physics
How much work is required to stop an electron (m = 9.11 1031 kg) which is moving with a speed of 2 106 m/s? 
physics
For S.H.M, a graph of acceleration against displacement gives a slope of 16 unit. The period is 
Physics
Describe how surface area and volume are related in solids? Give an example. 
Physics
Describe how you can determine the specific heat of an unknown metal whose mass is known. 
physics
How much heat is absorbed by an electric refrigerator in charging 2 Kg of water at 15°C to ice at 0°C? 
physics
Determine the resulting temperature when 150g of ice at 0°C is mixed with 300g of water at 50°C 
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
What happens to the gravitational energy of a firefighter when he slides down the fire poles? 
AP Physics
A car slows down from 18 m/s to rest in a distance of 91 m. What was its acceleration, assumed constant? 
physics
You are driving a car with a power output of 56,000 Watts. How many seconds will it take to go from 0 m/s to 27 m/s? 
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
if the frequency of a particular electromagnetic wave is 4 x 10^14 hertz, what is its wavelength of the radiation in nanometers (nm)? 
Physics
What is a node? i'm supposed to label the nodes in a diagram of a wave but i can't find it anywhere 
physics
the minute hand of a large clock is 2 m long. what is its mean angular speed? 
Physics
If a +q charge is placed at d in the xaxis (x_0<d), what happens to the total electric field in 1? 
physics
how much work is done by an engine using 105 watts of power in 3.2 seconds? 
Physics
If a +q charge is placed at d in the xaxis (x_0<d), what happens to the total electric field in 1? 
physics help!
The displacement of an object is given by y = (4.6 cm) sin 28ðt. (a) What is the amplitude? (b) What is the frequency? (c) What is the period? 
physics
Find the electric field at the folowing radii from the center of this charge configuration. 
physics
if V = (10x10y)i + 30k find pressure change between points (0,0,0) and (3,1,0) 
physics
What is the value of the gravitational acceleration at a height of 2000 km above the surface of the Earth? 
physics
If a coffee can has a radius of 63.0 cm and a height of 15.8 cm find its volume round to neaerest cm3 
physics
The third longest wavelength in the Paschen series in hydrogen corresponds to what transitions? 
physics
In LCR series AC circuit when does the effective voltage lag behind the current? 
physics
At what speed should an object be projected to reach the maximum range of 200 m ? 
physics
what are the two forces that affect the motion of a child as she comes down a slide? 
physics
What is the wavelength of the peak of the blackbody radiation curve for the human body (T = 310 K)? 
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
What is the acceleration of a proton moving with a speed of 4.3 m/s at right angles to a magnetic field of 2.1 T? 
physics  really dnt get this at all
Will the photoelectric effect change for different targets 
physics
How will the current in a wire change as the wavelength of light changes? I have no idea how to do this. 
physics
How will the current in a wire change as the wavelength of light changes? I have no idea how to do this. 
physics
find the maximum voltage that can be applied to a 8 kohm resistor rated 0.50 Watt? 
physics
find the maximum voltage that can be appliedto a 8 k ohm resistor rated 0.50 watt?