Math/Physics

208,687 results, page 56

Physics

How much potential energy does Tim, with mass 60.0 kg, gain when he climbs a gymnasium rope a distance of 3.5m?

physics

Three balls A, B, and C, with masses of 3 kg, 1 kg, and 1 kg, respectively, are connected by massless rods. What are the coordinates of the center of mass?

Physics

If you had to straighten out a refracted ray that went through a lens with a focal length of +15 cm, what could you do?

astronomy/physics

determine the mass of the earth from the known period (365.25 days) and the distance of the moon (3.84X10^3 km)

physics

A force of 291.0 N is used to push a 140 kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed in kW.

Physics

A yo-yo has a string length of 0.200 m What is the slowest speed at which you can spin it to keep it in a fixed path? What is this, and how do you find it? Thanks

physics

determine the velocity and kinetic energy of neutrons having de broglie wave length 1 angstrom

physics

List four effects that can be observed that demonstrate light travels in straight lines. Does anybody know the answer??

PHYSICS

How is it possible to have an instrument like a bugle that has a fixed-air column play a melody?

college physics

an automobile traveling at 25.0 km/h along straight,level road accelerates to 65.0 km/h in 6.00s what is the acceleration

Physics

Which force acts opposite of the direction of displacement of the object? I think it would be friction...but could it be spring?

physics

What is the longest wavelength of light that will emit electrons from a metal whose work function is 3.10eV?

physics

using ideas of torque and center of gravity explain why a ball rolls down a hill

Physics

What are some of the safety considerations and technologies used in designing a safe roller coaster ride?

physics

What initial mass of 235U is required to operate a 650-MW reactor for 1 year? Assume 40% efficiency.

Physics

Who was Isaac Newton? Write a brief paragraph about his life and work (include a bibliography)

Physics

If a tern travels 3.20 x 10^4 km south in 122 days, what is its average velocity in kilometers per day?

Physics

If a tern travels 3.20 x 10^4 km south in 122 days, what is its average velocity in kilometers per day?

Physics

How do you know when to use cos or sin or tan when they give you angles in the question to find tension or force?

physics

Who does more work if your friends pushes a something four times further than you with half the force?

Physics

A 5 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the oject? Would it be 5 X 2?

physics

Rubidium forms the postive Rb+ Is this ion larger or smaller then the neutral atom? Explain PLEASE

physics

How do the acceleration vectors differ on opposite sides of the path for un iform circular motion? How are they the same?

physics

How much time will elapse between seeing lightening and hearing the thunder happening 8000 m from you?

physics

How much time will elapse between seeing lightening and hearing the thunder happening 8000 m from you?

physics

An airplane travels at 144 km/h toward the northeast. What is the northern component of its ve- locity? Answer in units of km/h.

physics

A _____________ volt battery will increase the potential energy of 0.005 coulombs of charge by 29.5 joules.

physics

A light bulb with resistance of _____________ Omega draws 900 mA from a 110 V household circuit.

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

calculate the force of a 300,00 kg jumbo jet that is accelerating 0.4m/square just before takeoff

GENERAL PHYSICS

Two long, parallel wires separated by 90 each carry currents of 2.0 in a horizontal direction.

physics

If wind blows at 44 m/s over a house, what is the net force on the roof if its area is 180 m^2 and is flat?

physics

A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.6 cm to x = 5.6 cm, where x is the displacement from its unstretched length.

physics

an ant walk 1 meter west and then 3 meters north whats is the ants direction in degrees

physics

an ant walk 1 meter west and then 3 meters north whats is the ants direction in degrees

physics

An object falls a distance h from rest. If it travels 0.43h in the last 1.00 s, find (a) the time and (b) the height of its fall.

physics

estimate the rotational kinetic energy of earth, assuming it to be a solid sphere of uniform density

physics

Calculate the force of gravity on a spacecraft 12800 km above the earth's surface if its mass is 700 kg.

physics

The vertical leap of a professional NBA athlete is reported to be 47.3 inches. What is his takeoff speed? in m/s? is this kinematics??

physics

A bike travels at a constant speed of 4.0 m/s for 5.0 s. How far does it go? GIVEN: V = 4.0 m/s t = 5.0 s Would you use this equation? D= Vit + 1/2 at^2

Physics

How far does a plane fly in 15 s while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration?

Physics

What potential energy does a 60.0-kg gymnast acquire in climbing 5.00 m up a vertical pole? GIVEN: mg = 60 h/d = 5.00 m PE = mgh PE = (60)(5.00) PE = 300 J

physics

What vector represents the displacement of a person who walks 15 km at 45 degrees south of east, then 30 km due west?

physics

Correct the following statement: The racing car rounds the turn at a constant velocity of 145 km/hr.

Physics

As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?

college physics

A delivery truck travels 10 km north, 18 km east, and 29 km south. What is its final displacement (in km) from the origin?

College Physics

To move 5.0 C of charge from one electrode to the other, a 12-V battery must do how much work? 60 J 5.0 C 12 J 12 V 60 W

physics

for some reason, choice 6 was incorrect when i tried it sorry to keep bothering you about it drwls

physics

how to calcula distance of a object in free fall if only the time it reaches the ground is given

physics

1) At what speed must a 75 kg basketball player leave the ground if he is to jump a vertical distance of 1.2 m? (ans: 4.8 m/s)

physics

How much work must be done to bring three electrons from a great distance apart to 5.5×10−10 m

Physics

A 1.15 kg block slides down a 19.0 m long 29.0° incline at constant velocity. How much work is done by friction?

physics

need help decomposing theses vectors to x and y 52.9 meters at 19 degrees rectangular cor-ordinate system

physics

two charged objects carry a negative charge of 2*10c. calculate their distance apart

Physics

If two resistors are connected in parallel, I know that they share the same voltage but how would you determine their current?

Physics

On a bright sunny day, the irradiance on the surface of the ocean is 1.6*10^17 photons cm^-2 s^-1. If k=0.02 m^-1 a)How much light is left at 15 m? b)at 75 m?

physics

Find the voltage increase when 12 J of work is done to push a 0.0013 C charge into an electric field.

11th grade Physics

What happens when a conductor is wired in parallel with the bulb? Is the swich open or closed?

11th grade Physics

What happens when an insulator is wired in parallel with the bulb? is the swich open or closed?

11th grade Physics

What resistance would produce a current of 120 amps from a 6-volt battery?

11th grade Physics

What is the current produced by a 9-volt battery flowing through a resistance of 2 x 10^-4 ohms?

11th grade Physics

What is the potential difference if a resistance of 25 ohms produce a current of 250 amperes?

physics

Three charges of 5 x 10^(-6) C are placed on the vertices of an equilateral triangle of 10cm. Calculate force on each charge.

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

Using gauss's law,calculate the electricfield at a distance r=20cm from a point charge q=4microcoulomb.

physics

The force produced by Earth's gravity on a 70 kg man standing on the moon is more than 0.5 N True or False?

physics

What is the temperature of an ideal gas whose molecules have an average translational kinetic energy of 3.90 10-20 J? K

Physics

Who were two historical figures (scientists) that contributed to the process of mantle convection and plate movement?

physics

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

physics

a particle of mass 0.3kg vibrates with a period of 2 sec. if its amplitude is 0.5m what is its maximum kinetic energy

10th grade

how can i make an easy working model in physics for class 10 holiday home work

physics

x-rays produced in an x ray machine can have a frequency of 1.4*10^14 what is the wave length of these electromagnetic waves in nm?

Physics

The hamiltonian shows you that the energy levels are purtered by the electric fields.The form of the matrix,you can see?

physics

Two masses are hanging over a frictionless, massless pulley as shown blocks_pulley_aMass m1 is 5.0 kg and mass m2 is 7.0 kg

physics

if the wheel on a car accelerates from rest at a constant rate of 1.5rev/s, how fast will it be turning after 3s.

Physics

Two vectors A and B have magnitude A = 3.00 and B = 3.00. Their vector product is A x B= -5.00k + 2.00i. What is the angle between A and B?

Physics

Two vectors A. and B have magnitude A = 3.00 and B = 3.00. Their vector product is A x B= -5.00k + 2.00i. What is the angle between A and B?

physics

calculate the maximum increase in photon wavelength that can occur during Compton Scattering. (answer in pm).

Physics

Calculate the power output of a 1.5 fly as it walks straight up a windowpane at 2.2 P=__W (2 sig figs)

Physics

Calculate the power output of a 1.5 fly as it walks straight up a windowpane at 2.2 2 sig figs P= ___W

physics

1. How much does it cost to operate a 75 W lamp continuously for 1 week if the power utility rate is 7/kWh?

college physics

Hi given you have a half-wave rectifier and you know alternating current = VSin2(pi)fT, how do you calculate V(o)t?

physics

Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do at home. Why is this so?

Physics

The winner of the Kentucky Derby runs the 1.25-mile race in 2 minutes, 2.0 s.What's the horse's average speed in {\rm m}/{\rm s}?

physics

What are the dangers associated with electricity in your home? What can be done to limit or prevent the possibilities of dying or getting hurt?

physics

What are the dangers associated with electricity in your home? What can be done to limit or prevent the possibilities of dying or getting hurt?

physics

Consider a particle with initial velocity that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis.

physics

If a car rolls gently(vo=0) off a vertical cliff, how long does it take to reach 85km/h?

physics

A truck has to travel at what speed to stay underneath an airplane traveling at 105 kg/h at 25% angle to the ground.

physics

What is the magnitude of the displacement of a car that travels half a lap along a circle that has a radius of 170m ?

Physics

What is the difference between 110, 220 and 440 volts. How does amperage play a role with voltage

ap physics

You measure the radius of a wheel to be 4.16 cm. If you multiply by 2 to get the diameter, should you write the result as 8 cm or as 8.32 cm? Justify your answer.

physics

a car is going 8 m/s goes over a cliff 78.4 meters high. How far from the base does it land?

physics

You throw a ball downward from a window at a speed of 1.9 m/s. How fast will it be moving when it hits the sidewalk 2.2 m below?

physics

You throw a ball upward from a window at a speed of 2.9 m/s. How fast will it be moving when it hits the sidewalk 2.2 m below?

physics

city of K is 27 km north of I. Head west at 11:00 in the morning and arrive at 8:30 in the evening. What is my average speed and velocity

Physics

Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!

Physics

Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!

PHYSICS

Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!

physics

A car accelerates from rest at 7.9 m/s2. How much time does it need to attain a speed of 5 m/s? Answer in units of s.

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