Math/Physics

206,302 results, page 47

Physics

If the third harmonic of a standing wave in a vibrating string is 600 Hz, what is the fundamental frequency?

physics

Does an object need a net force acing on it in order to move at constant velocity?

Physics

A student photographs a 18cm flower so it fills half of a 24mm slide. What is the magnification?

Physics

Two identical charges are 36 mm apart. The electrostatic force between them is 1.3 N. What is the size of each charge?

college physics

the speed of light is about 3.00 x 10^8 m/s. convert this figure to miles per hour

11th grade physics

im not procrastinating i really don't understand it. im not asking for the answers im just asking for a little more help??

physics

can anyone give me a site that "best explains" about Rotational motion/Angular. thanks a lot.. :)

Physics

can anyone give a site that have problems about pressure with solution.. urgently needed.. thanks :)

physics

What is the evidence for the claim that iron exists in a relatively cool outer layer of the sun?

physics (emergency!)

How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 1.99 106 m/s?

Physics- 8th Grade

What force is needed to accelerate a 10 kilogram shopping cart 3 m/s^2 (squared)?

PHYSICS

lIST THE PARTICLES THAT MAKE UP AN ATOM. wHAT ARE THEIR CHARGES? hOW ARE THEY ARANGED? wHAT IS THE APPROXIMATE AMU OF EACH PARTICLE?

Physics

List the particles that make up an atom. What are their charges? How are they arranged? wHat is the approximate amu of each particle?

physics

An object experiences an impulse, moves and attains a momentum of 200 kg m/s. If its mass is 50 kg, what is its velocity?

physics

Why can't you put your heels firmly against a wall and then bend over without falling?

Physics

What are some possible uses for gelled methanol and why was it never used as a fuel in transportation?

Physics

If 2.4 m3 of a gas initially at STP is compressed to 1.6 m3 and its temperature raised to 30oC, what is the final pressure?

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

What is the work required for a 1000kg truck to increase in speed from 30 m/s to 40m/s? Is the answer 350 kJ?

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

how much work can a 50.0kg wreckin ball traveling at 5.00m/s do when striking a building

Physics

How does mass affect the motion of objects falling freely under the influence of gravity?

Physics

How can you easily increase the magnetic field strength inside a current carrying coil?

Physics

What is the de Brogile wavelength of an electon that strikes the back of the face of a TV screen at 1/10 the speed of light?

Physics

A cube of ice weighing 18 grams sublimes into vapor. How many liters of gas will you get?

Physics

What does shifting the phase between the sources in a double slit experiment do to the interference pattern?

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

Could someone tell me the formula for finding distance when time is given and the acceleration is constant?

Physics

What is the value of a if the object is moving with constant velocity? What does this equation reduce to in such a case?

physics

The acceleration of a certain rocket is given by a=bt where b is positive cnstant, find the position function Xo and Vo at t=o?

Physics

The acceleration of a certain rocket is given by ax=bt where b is positive constant, find the position and velocity at t=5.0s if Xo=0 and Vo=0 and b=3.0m/s^3?

physics

Is it possible to calculate the torque acting on a rigid body without specifying the origin?

physics

A 1100 kg sports car accelerates from 0m/s to 33m/s in 13s What is the average power of the engine?

physics

A 4430-kg helicopter accelerates upward at 2.2 m/s2. What lift force is exerted by the air on the propellers?

Physics

Runners in the 100-m dash use starting blocks. Explain what this device does. PLEASE HELP.

physics

A 1.5 volt battery will increase the potential energy of ________________ coulombs of charge by 0.18 joules.

physics

What happens when you walk across a carpet and receive a shock when you touch a metal object.

physics

A particle at rest undergoes an acceleration of 2.1 m/s2 to the right and 5 m/s2 up. a) What is its speed after 7.9 s? Answer in units of m/s.

physics

If a car is traveling westward with a constant velocity of 20 m/s, what is the net external force acting on it?

Physics

If the change in position Dx is related to velocity v (with units of m/s) in the equation Dx = Av, the constant A has which dimension? a. m/s^2 b. m c. s d. m^2 I chose b?

physics

How can you easily increase the magnetic field strength inside a current-carrying coil?

Physics

How does the idea of magnetic fields arising from circulating currents relate to permanent magnets?

physcal science/physics

what is the kinetic energy in joules of a 1000 kg car travelling at 90km/h

Physics

What is the de Broglie wavelength of an electron that strikes the back of the face of a TV screen at 1/9 the speed of light?

Physics

Thanx DRWLS! Worked like a charm and I checked behind myself with the same formula!!!

Physics

Another one, sorry! =P This stuff is really confusing.. Why doesn't friction depend on surface area?

physics

how many electrons must be removed from an electrically neutral silver dollar to give a charge of +2.8 uc

Physics

At what temperature is the rms speed of helium molecules half its value at STP (0 C}, 1.0 atm)?

physics

if a block of wood dropped from a building has attained a velocity of 78 m/s how long has it been falling?

Physics

what is the mass of hydrogen peroixide, H2O2, in 350 grams ofa 20% by weight solution?

Physics

A mass of gas has a volume of 380 cm3 at a pressure of 560 mm Hg and a temperature of 7C. What is its bolume at s.t.p.?

physics

how much energy is gain by an electron accelerated through a potential differenc of 30000v?

grade 11 physics

what is the index of refraction of a medium in which the speed of this radiation is 2.54X10^8 m/s? I don't even know where to start...

physics

Determine the percent error in this approximate value. (There are 365.24 days in one year.)

physics

What is the number of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to 1.00×104 ?

Physics

What experiment can be used to prove that the value of gravity near the earths surface is constant ie. 9,8m.s

physics

A crane lifts 1 tonne of concrete through a height of 25 m. How much work does it do? (1 kg has a weight of 9.81 N.)

Physics

Describe the acceleration time graph of a car traveling forward and applying its brakes.

Physics

How does the conservation of mechanical energy explain why a planet in an elliptical orbit changes speed?

physics

A 1300 kg sports car accelerates from rest to 90 km/h in 7.0 s. What is the average power delivered by the engine?

PHYSICS

A race car's velocity increases from 3.6 m/s to 32.4 m/s over a 5-s time interval. What is its average acceleration?

Physics

At a spot in the ocean, the surface irradiance is 7.8*10^16 photons and k=.14 m^-1. At what depth does the euphotic zone end?

Physics

What's the tangential acceleration of a freely swinging pendulum when it makes an angle θ with the vertical?

physics

How much energy is produced when the sun converts one kg of hydrogen into helium?

SCIENCE

Didn't mean to ask but i was really curious and didn't get an answer from researching.Why is physics necessary in becoming a dentist?

physics

Good job "Drwls", your answer to my bowling ball question worked. Way to go!

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

Physics

A positive and a negative charge, each of magnitude 1.0 10-5 C, are separated by a distance of 12 cm. Find the force on each of the particles

Physics/ optics

An object is located 25cm in front of a +6.00 lens, where is the image? is it real or virtual?

Physics

In a hydrogen atom, if the radius of the orbit of the electron is doubled, then its energy will ... >> Increase by a factor of 2??

physics

pls what is the formula for calculating period given gravity, mass and length of the material

Physics

What is the difference in blood pressure between the head and feet of a person of height 171 cm?

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

What is the inductance L of a 0.40 m long air-filled coil 3.2 cm in diameter containing 10,000 loops?

physics

what is the most important element for creating a magnetic field. and why? Moving charges..... right?

physics

do all electrons ejected from a metal surface have the same kinetic energy?

physics

How much work must be done to increase the speed of an electron from 0.200c to 0.210c? In (MeV)

Physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 ìC?

physics

if the piston is in thermal equilibrium but the it is pushed inward, can there be a change in temperature(increase) even if Q=o

Physics

What is the strength of the magnetic field a distance of 1 meter from a wire carrying a current of 1 A? B=MoI ------ 2(pi)r Mo=4(pi)x 10^-7 I=1 A How do I know what r is?

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

Suppose a rock fell off a cliff. After 5 seconds, its speed well be 100 m/s

Physics

What is the centripetal acceleration of a skater moving with a tangential speed of 2.0 m/s in a circular path with radius 2.0 m?

physics

A constant net force of 1500 N gives a toy rocket an acceleration of 2.5 m/s2. what is the mass in kg?

Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?

Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?

physics

An automobile driver puts on the brakes and decelerates from 30.0 m/s to zero in 15.0 s. What distance does the car travel?

Physics

a runner moving at a speed of 5.60 m/s rounds a curved track with a 60.0 m radius. what is the runners acceleration?

physics

A plastic bobber just barely floats in water. If it weighs 2N in the air, what is its volume

Physics

While riding her bicycle, she goes from a full stop to 9m/s in 3 minutes. How fast is she acclerating?

physics

please shelp me with this problem what is the stopping potential (V) if the wavelength of the incident light is 400 nm??

Physics

if you push a wall with a force of 50N, the work you do is...... (a)500J (b)5000J (c)50J (d)zero

physics

how high must a 2 kg basketball be thrown so that the top of its arc, it has a potential energy of 160J?

physics

The space shuttle traves in orbit at 210000 km/hr. How far will it travel after 5.0 hrs?

physics

if you jump upward with a speed of 2mls, how long will it take before you stop rising?

College Physics

What is the work required to move a proton 1 cm along the 7 volt equipotential line?

physics

In the ideal case of zero resistance, a ball rolling on a level surface will accelerate

Physics

Absolute temperature is proportional to the average kinetic energy of the atoms. True or false?

physics

A car travels in a straight line for 4.5 h at a constant speed of 61 km/h . What is its acceleration? Answer in units of m/s2.

physics

By how much does the speed of a vehicle moving in a straight line change each second when it is accelerating at 4 m/s2?

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