# Physics!

73,661 results, page 42

### Physics

A car speeds up from 12 m/s to 20 m/s in 6.4s.If its mass is 1200 kg,what force must its engine provide ?

### physics

What happens if we use water instead of kerosene in joules calorimeter experiment

### Chemistry and physics

What causes a red glow when the iron and sulphur mixture is heated?

### physics

What is the force a rock exerts if it's mass is 36,000 kg and the acceleration due to Gravity is 9.8 m/s2

### Physics

Which object had more potential energy when it was lifted to a distance of 10 meters?

### physics

Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction

### physics

a stone is thrown upward with a speed of 24.0m/s how fast is it moving when it reaches a height of 13.0m?

### physics

A body accelerate from rest at (2m/s square) calculate its velocity after travelling 9m

### physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 n C and a = 7.00? (The positive direction is to the right.) N

### physics

If a bicycle moves 20m what is the angular displacement in degrees, revolution and radians?

### Physics

what is the mass of the toy truck if the force of friction holding it in place is 18.5N u= 0.2 at 30 degrees

### Question

Are there any physics teachers on this site that can help? I've posted many questions on here but none of them get answered.

### physics

an aluminium sphere of 20cm diameter is heated from 0¡ãc to100¡ãc. what is the change in its volume?

### physics

Calculate the coefficient of kinetic friction for tyre rubber on the road surface.

### Physics

What is the fundamental frequency on a 5 m rope that is tied at both ends if the speed of the waves is 24 m/s?

### physics

A spaceship has a momentum of 20,000 kg·m/s to the left; its mass is 500 kg. What is the magnitude of its velocity?

### physics

A man walks 5.0m due east and then 10.0m N30oE . Find his resultant displacement

### Physics

90.0g of copper (c=390J/kg*oC) at 80.0°C are added to 270g of water at 20.0°C. What is the final temperature of the mixture?

### physics

find the no. of electron which must be removed from a conductor so that it requires a charge of 3.2 microC

### physics

A 3 kg book is lifted 5 meters above the floor for 250 seconds. What is the work done?

### Physics

What is the significance in the observation of discrete spectral lines in the emission spectrum of hydrogen??

### Physics

Would a feather have more air resistance than a lump of lead?

### Physics

what is the northward and eastward components of a 550 kph velocity of an airplane going NE?

### physics

A stone is dropped from a height of 4.5m.What will be the distance travelled by it during the last second of its fall?

### physics

A golf cart has an acceleration of 0.4 m/s². What is its velocity after it has covered 10 m starting from the rest?

### Physics

What distance does Anna covered by running on a circular track of length 500m?

### Physics

The speed of a train increased from 20 mi/hr to 30 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2

### Physics

A 2000 kg starts from rest and gains a velocity of 20 m/s in 5 s. What force wad applied on it?

### physics

The sensitivity of a galvanometer of resistance 990ohm is increased by 10 times.The shunt used is??

### physics

How long does it take the horse to cover the first 35.0 m of the race? acceleration is 3.00m/s^2

### PHYSICS

two equal masses of 12kg each are 2m apart. WHat is the gravitational force between them?

### physics

velocit of gas molecule is 3m/s at 1000k. at what temperature velocity becomes 12m/s?

### Physics

how much heat is needed to vaporize a 400.0 g of liquid water at 310.0 K?

### physics

At what angle with the north would he have to walk? Answer in units of ◦ .

### Physics

prove the following rules if true or false using Boolean algebra (a)A+AB = A+B (b)(A+B)(A+C) = A+BC

### physics

a 2.00 * 10^5 kg lunar landing craft is about to touch down on the surface of the moon

### 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

A ball is thrown vertically and reaches a height of 25m. What was it's initial velocity?

### Physics

A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?

### Physics

A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?

### Physics

If a sprinter accelerates from rest at a constant rate of 2.0m/s/s how fast will they be running after 4.0s?

### maths lit,physics,life science n tourism

i don't know which career to choose can you help me ?I'm doing grade 11.

### physics

what is diffraction? When does it occur? Which waves will defract more when passing through an opening?

### Physics 3

A golf ball is hit at 42.0 m/s at an angle of 20° with the ground. How far away does it land?

### Physics

Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg

### physics

It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?

### PHYSICS

WHAT IS THE VELOCITY OF A CAR THAT TRAVELS AROUND A TRACK THAT HAS A RADIUS OF 15M IN 2 MINUTES

### Physics

a 100 N chandelier hangs from the ceiling on 8 chains. What is the tension force on each chain?

### physics

a car is uniformly decelerated from 90km/hr in a time of 10 sec calculate the 2 acceleration

### physics

a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.

### Physics 30

A frictionless pulley (a 2.0 kg is on the floor while the 3.0 kg is 0.5m high) . when released, momentum of the 2kg is?

### PHYSICS

What reaction occurs between hydrogen and helium which gives the heat and of the sun

### PHYSICS

explain how exotic matter stabilizes a wormhole,google's answer was not direct

### Physics

I drop an object from a height of 500.0 m. How long does it take to hit the ground?

### physics

A bus is traveling 30 m/s and travels 20m. How far does it travel froom each point?

### Physics

P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?

### physics

How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?

### Physics

Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D

### physics

The displacement of a particle is given by S = a+bt+ct^2. Deduce the dimensions of the constants,a,b,and c appearing in the question.

### physics

determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s

### Physics

What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm)

### physics

if the distance between two bodies is increased by 25% then % change in the gravitational force is

### physics

Which is the vector quantity that describes the shortest path between two points?

### Physics

Do you think the sun's gravity is greater or less than that of all the other planets?

### physics

what is the effective weight of a person of mass 60kg carried vertically up in a rocket with an

### physics

What is the maximum walking speed of an adult man whose legs are each 1.2 m long?

### Physics

Two vector of 5N and 6N flow they oriented to get the resultant of 7N,9N?( please solve this question)

### PHYSICS

What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?

### physics

at what attitude the value of g would become one forth than on the surface of the earth?

### Physics

a westward force of 20 N acts on a 2.0 kg object moving eastward at 60 m/s for 2.0 s. What is the resulting velocity?

### physics

The equation y=5sin(3x-4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion

### physics

calculate the net force required to give a 3000kg trucks an acceleration of 2.5m/s^2

### Physics

What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?

### physics

4N force applied on a body mass 20kg then calculate work done in 3sec?

### Physics

What is the magnitude of the momentum of a 10,000-kg truck whose speed is 12.0 m/s? What is the kinetic energy?

### Physics

An object of area 15sqcm and height 2 cm has a mass of 50g. what is its density in SI system

### Physics

Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.

### physics

a car moving through road what is the direction of force and surface of acting

### Physics,Mthe

a body of mass is100an objet and volume is 10 .find the density

### physics

A man walked 10 m north, then 5 m south. What distance did he walk? What is his final displacement?

### physics

the time of flight of an object projected with speed 20m/s at an angle 30¡ã with the horizontal is

### Physics/Science

How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?

### PHYSICS/SCIENCE

How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?

### PHYSICS

A BALL MOVES ROUND A CIRCLE WITH RADIUS OF 20CM CALCULATE THE DISTANCE

### Physics

Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then?

### physics

What is the resultant displacement when a ship sail 200km north and then 150km west

### PHYSICS

What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly?

### physics

How much heat is needed to raise the temperature of 2kg of water to 10K?

### Physics

A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. Plz help! I don't get it.

### physics

the speed of a certain wave is 3.00cm/s. if its frequency is 0.20hz, what are its wavelength and period

### physics grade 11

how do i figure out how fast a car is going when all i know is frequency?

### physics

An airplane travels 250 km/h due West for 2 hours. Its average velocity is:

### Physics

How much power is required to move a 1500 kg elevator at a constant velocity of 2.5m/s.

### physics

If a hair dryer is rated at 900 W, how much energy does it require in 5 minutes?

### Physics

Determine the radius R of an object undergoing circular motion at a velocity of 54 m/s with an acceleration of 90 m/s^2

### Physics

If a racehorse starts from rest and accelerates at a rate of 4.7 m/s2, how long does it take the horse to go 20 m?

### physics

. Two positive point charge of 12 μC and 8 μC are 10 cm apart. The work done in bringing them 4 cm closer is,

### Physics

A ball thrown downward with an initial velocity of 20m/s.what will be itsvelocity after 5s