# Physics!

73,661 results, page 48

### science-physics

What is the formula to calculate the speed of the electron the has a mass of 0.910000000000000000000000000000 kg and a radius of 0.5290000000000 m?

### physics

determine the energy of a photon radio wave electromagnetic radiation. i know which formula to use 6.64*10^-34 what

A microwave oven operates at 2.80GHz . What is the wavelength of the radiation produced by this appliance?

### Physics

When dealing with circular motion; a string with the length of .4m is being spun horizontally, is the radius .2m?

### physics

A car travels in a straight line for 4.8 h at a constant speed of 57 km/h . What is its acceleration? Answer in units of m/s

### Physics

A cable lifts a 1060-kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?

### Physics

A cable lifts a 1060-kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?

### physics

Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 2.00 m/s. What is their frequency?

### physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?

### physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?

### physics

what is the reasonable temperature (Th anh Tc) for an ideal (caront) refrigerator that have coefficient of performance of 13

### physics

a 747 airliner reaches its takeoff speed of 170 in 35.0 .what is the magnitude of its average acceleration

### physics

If a solid is stretched or compressed beyond the point that it can return to its original shape it has passed its

### physics

Calculate the speed of an 7.6×104 kg airliner with a kinetic energy of 1.2 × 109 J. Answer in units of m/s

### physics

what is the force per meter on a wire carrying 7.5A current when perpendicular to a 0.70T field?

### physics

Rank, from smallest to largest, the pressures in the tank of motionless fluid shown in the figure.

### physics

What is the wavelength associated with a golf ball of mass 45 g driven off the tee with a velocity of 30 ms-1.

### Physics

A 155 N force is applied to the end of a 40 cm wrench at a angle of 45 degrees to the handle. What is the torque?

### physics

Your friend says his remote control car travels at a velocity of 1.5 m/s. What is wrong with that statement

### physics question

find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^-19 coulomb

### physics

A 1.00 x 10^3 kg sports car accelerates from rest to 25.0 m/s in 7.50 s. What is the average power output of the automobile engine?

### physics

What must be the magnitude of the force of static friction between the surface and the bottom of the crate?

### physics

a ball is thrown vertically upward at a speed of 45 m/s. how long does it take to return to the ground?

### Physics

You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?

### Physics

You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?

### PHYSICS

how far will a 1000kg car travel in 10 sec if it is accelerated from rest by a force of 5000N

### physics

Determine the net force needed to cause a 1310kg sports car to accelerate from 0 - 28.6m/s[fwd] in 5.6 s

### physics

A plane cruising at 251 m/s accelerates at25 m/s2 for 9 s.What is its final velocity?Answer in units of m/s

### Basic Physics

If a swimming pool has dimensions; 28.2 5m x 10.0m x 2.30m, when it is full of water, what is the force on the bottom ?

### physics

A spring has a force constant of 70000 N/m. How far must it be stretched for its potential energy to be 21 J?

### physics

what will happen to the bone structure if earth becomes more dense than its actual density?

### physics 11

By how much would 1200 W kettle, which is 72% efficient raise the temperature of 0.60 kg of water in 3.0 min?

### physics

what has no beginning and no end. it is also considered as the medium for light in einstein's theory of relativity

### physics

An argon atom has a mass of 6.64 x 10 kg has 5.5x108 joules of kinetic energy. At What velocity is it moving?

### physics

calculate the friction force of an object? if weight=19600,vi=30ms-1,vf=0ms-1 and S=100m.

### physics

if a car moving 180km/h reduces to 72km, what is the percentage change in kinetic energy?

### Basic Physics

What is the force of gravity between two spheres that have a mass of 8 kg and are separated by 27 m?

### physics

find the force if f between charges of +100mc -50mc located 50cm a part?

### physics

find the force if f between charges of 100mc -50mc located 50cm a part?

### physics

what is the kinetic energy of a 3 kg 20 cm diameter bowling ball with a linear velocity of 4m/s? (rolling and spinning)

### physics

the magnitude of the tongue produced by a 3.0n force applied to a door at a perpendicular distance of 0.25 m from the hinge

### Physics

How many joules would be required to raise the temperature of 20g of ice at oC to water at15C?

### physics

An equipotential surface that surrounds a point charge q has a potential of 516 V and an area of 1.01 m2. Determine q

### Physics

A jeep has a speed of 50 m/s at a given instant and 10 m/s later. fin its retardation, assuming it to be constant.

### physics

A jet travels at 435 m/s. How long does it take to travel 253 m? Answer in units of s

### Physics

How much work is needed to stop a 20g bullet moving with a speed of 150ms-1

### 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

what is meant by the change go temperature of 1 degree celcius on the scale of a plantinum resistance thermometer

### physics

How long does it take light to travel through a 3.3 mm-thick piece of window glass?

### physics

a frieght train rolls at the same speed but has twice as much mass its momentum is

### physics

What magnitude point charge creates a 13000 N/C electric field at a distance of 0.220 m?

### Physics

A downward force of 5.1 N is exerted on a -7.3 mcirco C charge. What is the magnitude of the electric field at this point?

### Physics

What is the electrostatic force between two ballons, each having 0.000005 C of charge, when they are 0.5 m apart?

### Physics

A person stands 2.0 m away from the reflecting surface of a plane mirror. What are the image characteristics?

### physics

If a protonand an electron are released when they 2.0X10^-10m apart, find the initial accelerationof each of them. I know a=ke^2/mr^2 k = 8.99 x 10^9 e = 1.6 x 10^-19 r = 2.0x 10^-10 so what is the m ????

### physics

An equipotential surface that surrounds a point charge q has a potential of 590 V and an area of 1.20 m2. Determine q.

### Physics

what is the average force needed to stop a car (1000kg) traveling 28m/s in 55m?

### physics

the force required to maintain an object at a constant velocity in free space is eaqual to?

### Physics

What can we say about the force of an object when the mass increases and acceleration remains constant?

### physics

what is the height of the ball if the bottom of the swing is zero, speed is 2.8m/sec, 9.81 acceleration of gravity

### physics

When a transverse wave on a string is reflectred from the free end the phase change produced is-------

### physics

What would the gravitational potential energy be if the bucket were raised six times as high?

### physics

Calculate a person's hang time if he moves horizontally 2 m during a 1.39 m high-jump.

### Physics

How can we find the resultant force if the mass and SPEED are given?? Give me the formula please!!

### physics

A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..??

### physics

Consider a concave mirror with radius R. An upright object is placed in between the interval R/2 and R. R

### physics

a 125 cm long string has a mass 2.0g and it is stretched with a tension of 7.0 IN between fixed support

### Physics

The magnification of an object 2km tall where placed in 150m in front of a plane mirror is ?

### Physics

Calculate the work required to be done to stop a car of 1500kg moving with a velocity of 60km/hr?

### conceptional physics

If a 35cm radius tire spins at a rate of 72 rad/s what is the rotating speed?

### Physics "scientists"

* JJ Thomson * a) How does his experiment of cathode ray tube relates to electrostatics? >> PLEASE HELP ME!! :( :)

### Physics

So if mgh=1/2mv^2 and I'm solving for v is my answer going to be v= squareroot of 2* (gravity) 9.8m/s^2* (height) 3.67m?

### physics

2. Determine the theoretical yield of aspirin if you started with 2.500 grams of salicylic acid?

### physics

problem E2_2 Strain, boundary conditions, displacement and elongation: Part I Plz help.

### Physics

How long does it take to deliver 315 J of energy to 0.850 cm^2 of a wall that it hits perpendicularly?

### physics

You can paddle at 4.5 km/h and the river is ﬂowing at 3 km/h. How far downstream will you be in 44 min? Answer in units of km

### physics

How long does it take light to travel through a 2.7 mm-thick piece of window glass?

### Physics

2. How many oxygen atoms are indicated on the right side of this balanced chemical equation? 4 Cr(s) + 3 O2( g)h2 Cr2O3( g)

### Physics

A fuel has heat of combustion equal to 30 kJ / g. How much energy is released when 5 kilograms are oxidized?

### Physics

Which of the following is the correct relationship between the electric field strength and the potential difference?

### physics

describe with the aid of a fully labelled diagram the features and their uses of a bicycle pump

### physics

A car covers a distance of x,while moving at 54km/1 in 15sec.Find the value of x

### physics

What is the radius of an automobile tire that makes a complete turn in 0.1 sec and has a linear speed of 24.0 m/s?

### Physics

What is the circular force of a 150 g yoyo swung around on a 1.00 m string at a velocity of 5.0 m/s (in Newtons)?

### physics

what is meant by liquefaction of gases? can hydrogen be liquefied by compression at the temperature of liquid air?

### physics

a polar satellite is launched at 850 km above Earth .find its orbital speed.

### physics

If I have 1.5 moles of an ideal gas at a pressure of 3 atmospheres and a volume of 7 liters, what is the temperature?

### Physics

A meteoroid is speeding through the atmosphere, traveling east at 23.1 km/s while descending at 18.3 km/s. What is its speed, in km/s?

### Physics

Air in a balloon does 50 J of work while absorbing 70 J of heat.What is its change in internal energy?

### PHYSICS

How much heat must be added to 1.0 kg of iron to raise its temperature from 20°C to 95°C? (ciron = 0.11 cal/g•°C)

### physics

if a bus travels north with a constant velocity of3m/s, what is the displacement after 15 seconds?

### physics

a 1000 kg car with an average power of 100 kw accelerates from 0 to 50 m/s. how long does it take to accomplish this

### physics

75 kg block is dropped from a height of 6 m. How much kinetic energy does it have when it has fallen halfway?

### physics

how much work is needed to stop a 20g bullet moving with a speed of 150 ms-1

### Physics

What is the formula to find magnetic field at the centre of the solenoid of hollow iron core??

### physics

(a) How many kilograms of water must evaporate from a 60.0 kg woman to lower her body temperature by 0.750°C?

### Physics

a racing car has a uniform acceleration of 4 m/s2 What distance will it cover in 10secs after its start

### Physics

What electromagnetic waves are dangerous for humans and why? I have microwave, xrays....can you help name a few

### Physics

A stone is thrown vertically upward with a speed of 19.0m/s How fast is it moving when it reaches a height of 10.0m

### Physics

A car travels in a straight line for 4 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s^2?