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

physics

What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?

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