73,661 results, page 42
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 ?
What happens if we use water instead of kerosene in joules calorimeter experiment
What causes a red glow when the iron and sulphur mixture is heated?
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
Which object had more potential energy when it was lifted to a distance of 10 meters?
Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction
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?
A body accelerate from rest at (2m/s square) calculate its velocity after travelling 9m
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
If a bicycle moves 20m what is the angular displacement in degrees, revolution and radians?
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
Are there any physics teachers on this site that can help? I've posted many questions on here but none of them get answered.
an aluminium sphere of 20cm diameter is heated from 0¡ãc to100¡ãc. what is the change in its volume?
Calculate the coefficient of kinetic friction for tyre rubber on the road surface.
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?
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?
A man walks 5.0m due east and then 10.0m N30oE . Find his resultant displacement
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?
find the no. of electron which must be removed from a conductor so that it requires a charge of 3.2 microC
A 3 kg book is lifted 5 meters above the floor for 250 seconds. What is the work done?
What is the significance in the observation of discrete spectral lines in the emission spectrum of hydrogen??
Would a feather have more air resistance than a lump of lead?
what is the northward and eastward components of a 550 kph velocity of an airplane going NE?
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?
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?
What distance does Anna covered by running on a circular track of length 500m?
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
A 2000 kg starts from rest and gains a velocity of 20 m/s in 5 s. What force wad applied on it?
The sensitivity of a galvanometer of resistance 990ohm is increased by 10 times.The shunt used is??
How long does it take the horse to cover the first 35.0 m of the race? acceleration is 3.00m/s^2
two equal masses of 12kg each are 2m apart. WHat is the gravitational force between them?
velocit of gas molecule is 3m/s at 1000k. at what temperature velocity becomes 12m/s?
how much heat is needed to vaporize a 400.0 g of liquid water at 310.0 K?
At what angle with the north would he have to walk? Answer in units of ◦ .
prove the following rules if true or false using Boolean algebra (a)A+AB = A+B (b)(A+B)(A+C) = A+BC
a 2.00 * 10^5 kg lunar landing craft is about to touch down on the surface of the moon
vander waal b for oxygen is 32 cm3/mol compute the diameter of o2 molecule.
A tennis ball is thrown up in the air. It stays there for 12.1 seconds how fast did you throw it?
A ball is thrown vertically and reaches a height of 25m. What was it's initial velocity?
A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?
A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?
If a sprinter accelerates from rest at a constant rate of 2.0m/s/s how fast will they be running after 4.0s?
i don't know which career to choose can you help me ?I'm doing grade 11.
what is diffraction? When does it occur? Which waves will defract more when passing through an opening?
A golf ball is hit at 42.0 m/s at an angle of 20° with the ground. How far away does it land?
Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg
It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?
WHAT IS THE VELOCITY OF A CAR THAT TRAVELS AROUND A TRACK THAT HAS A RADIUS OF 15M IN 2 MINUTES
a 100 N chandelier hangs from the ceiling on 8 chains. What is the tension force on each chain?
a car is uniformly decelerated from 90km/hr in a time of 10 sec calculate the 2 acceleration
a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.
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?
What reaction occurs between hydrogen and helium which gives the heat and of the sun
explain how exotic matter stabilizes a wormhole,google's answer was not direct
I drop an object from a height of 500.0 m. How long does it take to hit the ground?
A bus is traveling 30 m/s and travels 20m. How far does it travel froom each point?
P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?
How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?
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
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.
determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s
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)
if the distance between two bodies is increased by 25% then % change in the gravitational force is
Which is the vector quantity that describes the shortest path between two points?
Do you think the sun's gravity is greater or less than that of all the other planets?
what is the effective weight of a person of mass 60kg carried vertically up in a rocket with an
What is the maximum walking speed of an adult man whose legs are each 1.2 m long?
Two vector of 5N and 6N flow they oriented to get the resultant of 7N,9N?( please solve this question)
What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
at what attitude the value of g would become one forth than on the surface of the earth?
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?
The equation y=5sin(3x-4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion
calculate the net force required to give a 3000kg trucks an acceleration of 2.5m/s^2
What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?
4N force applied on a body mass 20kg then calculate work done in 3sec?
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?
An object of area 15sqcm and height 2 cm has a mass of 50g. what is its density in SI system
Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.
a car moving through road what is the direction of force and surface of acting
a body of mass is100an objet and volume is 10 .find the density
A man walked 10 m north, then 5 m south. What distance did he walk? What is his final displacement?
the time of flight of an object projected with speed 20m/s at an angle 30¡ã with the horizontal is
How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?
How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?
A BALL MOVES ROUND A CIRCLE WITH RADIUS OF 20CM CALCULATE THE DISTANCE
Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then?
What is the resultant displacement when a ship sail 200km north and then 150km west
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?
How much heat is needed to raise the temperature of 2kg of water to 10K?
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.
the speed of a certain wave is 3.00cm/s. if its frequency is 0.20hz, what are its wavelength and period
how do i figure out how fast a car is going when all i know is frequency?
An airplane travels 250 km/h due West for 2 hours. Its average velocity is:
How much power is required to move a 1500 kg elevator at a constant velocity of 2.5m/s.
If a hair dryer is rated at 900 W, how much energy does it require in 5 minutes?
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
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?
. Two positive point charge of 12 μC and 8 μC are 10 cm apart. The work done in bringing them 4 cm closer is,
A ball thrown downward with an initial velocity of 20m/s.what will be itsvelocity after 5s
What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?