Math/Physics

206,302 results, page 86

physics

a fan rotates speed of 600rev per min the power is cut it stopped after 60 rev find time

physics

An aeroplane lands on the runway at velocity 180km/hour and decelerates at 0.4 m/s^2 find the time taken until it stops and the displacement.

Physics

How Much Work Is Done Against Gravity In Sliding A 500g Object Through 2m Up A Smooth Plane That Is Inclined 30degree To The Horizontal(g=9.8)

Physics

An airplane has a takeoff speed of 66m/s. Assuming a constant acceleration of 1.62m/s^2, how long is the plane accelerating down the runway?

Physics

Two people pushing a stalled car from rest generate a net force of +840N for 5.0s. What is the cars final velocity?

physics

Two springs have force constant K1&K2 (K1>K2) .each spring is extended by same farce F. If their elastic potential energy are E1&E2then E1/E2)is?

Physics

A rocket accelerates from rest at 17 m/s2 for 11 s. How far will it cover during this time? Answer in units of m. How do I solve this? do I multiply 17m/s2 by 11 seconds??

Physics

Calculate the height through which a crane can lift a load of 4 ton when it's motor of 4 H.P operates for 10 sec. Acceleration due to gravity is 10 m/s2

physics/algebra

82.35 m = (0)t + 1/2(-9.8)t^2 t = 4.1 s is correct Could someone please walk me through this? I could not get an answer because of the negative (maybe my order of operations is wrong) I have no idea!

Physics

A boy sledding down a hill accelerates at 2.33 m/s2 . If he started from rest, in what distance would he reach a speed of 8.70 m/s? Answer in units of m

physics

an object falls directly from a plane flying horizontally at an altitude of 10000ft at 50mi/h. how long will it take to hit the ground?

Physics

Forces of 10.3N north, 19.5N east, and 15.2N south are simultaneously applied to a 4.06kg mass as it rests on an air table. What is the magnitude of its acceleration?

physics

The steel I-beam in the drawing has a weight of 1.53 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends?

physics

when starting a foot race a 66 kg sprinter exerts an average force of 640 N backward on the ground for 0.85s. What is his final speed in m/s?

Mabel hill, physics

Two force,3N and 4N act on a body in the direction due north and east respectively. Calculate their equilibrium?

Physics

If a rocket is launched at an initial speed of 120m/s at an angle of 25 degrees, find the time of flight, range, and it's highest height.

Physics

How does an electric motor work, linking to the theory of electromagnetism? I have already identified a few laws: -Ohms -Faraday's

Physics

The steel I-beam in the drawing has a weight of 5.22 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends?

Physics

Since friction is a force, how do you determine its magnitude and direction? Use a box sliding across a carpet to illustrate your answer

physics

So basically I got this question and it's baffling. Over a distance of 5m the speed of a bicycle increase's from 2ms to 5ms what I's the magnitude of acceleration?

Physics HELP

A bug on a picnic table travels 10 cm east, then 18 cm northward, and finally 20 cm westward. What is the bugs displacement relative to its original position?

physics

Explain two different reasons why fibreglass is used to fill the space between the concrete block and the metal casing.

physics

if a worker pushes a box 3 times as far as you do and exerts double the force you applied, which one of you does more work and by how much?

Physics

A ceiling fan of radius 1.0 m is rotating with a frequency of 300 RPM. How fast (in m/sec) is the tip of one of the blades moving?

physics

A skier (m=55.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 4.90 m and D = 10.6 m, find H.

physics

How much would the time keeping of a pendulum clock be affected by taking it to the moon? Gravity is 1.6m/s ^2, compared with 10m/s ^2 on the earth.

Physics

An astronaut on board a spacecraft is in orbit around the earth in uniform circular motion. Is her velocity speed and acceleration constant?

physics

What must be the radius of an unbanked (flat) curve so that a car can safely travel at a maximum speed of 39 m/s? The coefficient of static friction is 0.70.

physics

a stone propelled from a catapult with a speed of 50ms-1 attains a height of 100m. Calculate the time of flight and the angle of projection

physics dimention

the force of capillarity in plant is given by F=yrgh/2,where y is the coefficient of surface tension.Is this equation correct or not? justify your answer.

PHYSICS

A ball is thrown upwards .the distance covered by it during of last 2 second before it reaches the maximum height is ???? Find answer

Physics

A 26-lb. force vector that makes an angle of 101° counterclockwise from the -y direction. Determine the x and y components of the following three vectors in the xy plane.

Physics

In what ratio the mass 4m should split so that value of gravitational force comes Maximum for a fix distance d between the masses?

Physics

In what ratio the mass 4m should be split so the value of gravitational force comes maximum for a fix distance d between the masses? F=G(4m-x)/r^2 G/r^2(4m-x^2)

Physics

with what minimum speed must a ball be thrown straight up in order to reach a height of 34 meters above the launch position?

physics

a man holds a child on his shoulders while watching a football match. How much work has he done if the game lasts for 2 hours

Physics

Two equal points charges of +3.00 X 10-6C are placed 0.200m apart. What are the magnitude and direction of the force each charge exerts on the other?

Physics

W.K.T, Magnetic Force qvB=mv^2/r ... n we know how to prove it too.... But how to show that the radius of curvature of the circular path is proportional to the linear momentum of the charge ?

Physics

A dense plastic toy of mass 1.8 kg is floating just beneath the surface of a pond. What is the buoyant force on it? Answer in units of N.

physics

a baseball is released at rest from the top of a building.it hits the ground after falling for 6seconds . what was the height from which the ball was dropped

physics

a ball of 100g is thrown vertically upwards with an initial speed of 150km/h, calculate the time taken to return to the thrower

Physics

A ball of mass 500g is kicked into the air at angle of 45degree. It reaches a height of 12m. What was it's initial velocity?

Physics

A block of mass 0.585 kg is placed on the end of a spring which has a stiffness of 294 N/m. It is pulled down 2.80 cm and released. What is the frequency of oscillation?

Physics

A 5.8 kg object is accelerated from rest to a speed of 53.3 m/s in 55 s. What average force was exerted on the ob- ject during this period of acceleration? Answer in units of N.

physiçs

What precautions shouĺd i apply when doing a coefficieñt of friction.force applied to a blocķ on a hořizontal plane?

Physics

You can run 8.0 m/s , 20% faster than your brother. How much head start should you give him in order to have a tie race over 90 m ?

physics

A 58 kg skier has a speed of 9.5 m/s at point A. She then encounters a 1.75 m deep dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m.

Physics

What is common to all light sources, including incandescent, fluorescent, neon, halogen, laser, and sodium vapor devices?

Physics

Two charges +1C and -1C are placed at distance 1m apart ,each having masses 2kg respectively are released.what is the type of collision they experience?

physics

A splash is heard 3.12s after a stone is dropped into a well 45m deep.the speed of sound in air is(g=10m/s2)

Physics

A dense plastic toy of mass 2.8 kg is floating just beneath the surface of a pond. What is the buoyant force on it? Answer in units of N.

physics

If the sun's mass is about average, how many stars are there in the Milky Way galaxy? (This is all the information given in the question and I don't know where to go from here).

Physics

Is the tension on a rope zero just before a person releases it after swinging from one side of a river to the other?

Physics

8kg mass moving with a speed of 30 of 30ms-1 is brought to rest in 2.5sec, calculate the magnitude of the constant retarding force

physics

Find the total heat capacity of a 2.0 mol diamtomic ideal gas at constant pressure if the molecules can rotate and vibrate.

physics

A body is moving with uniform acceleration of 10m per second square.lf it start from rest calculate its displacement afrer 5s

Physics

What mass would you hang on the right side of the system in the figure to balance it -- that is, to make the clockwise and counterclockwise torques equal? (Let x1 = 33 cm and x2 = 12 cm.)

Physics

A box with a mass of 10 kg slides along a horizontal surface. A force of 50 N is needed to keep it moving. What is the coefficient of kinetic friction?

science,physics

The focal length of a mirror is given by 1/f=1/u+1/v where u and v represent object and image distances respectively,The maximum relative error in f is ?

Physics

A 600kg car is moving on a level road at 30m/s.how large is a retarding force is required to stop it in a distance of 70m

Physics

What is the wavelength of light in water if it has a frequency of 6.8 x 10^14 Hz? I don't know what formula to use and don't understand. I tried Lambda=c/v and got it wrong. Answer needs to be in nm. Thanks.

Physics

If a cyclist takes two minutes to complete half revolution on a circular path of 120m radius.what is the average speed?

Physics

I don't understand what formula to use for this question: Points A and B each have an electric potential of +9 V. How much work is required to take 1 mC of charge from A to B? Thank you

Physics

A cyclist moving on a corcular track of radius 40m completes half a revolution in 40 sec. Its average velocity is nearly

physics

what is the maximum torque on a rectangular coil 5 cm x 12 cm and with 600 turns when carrying a current of 0.0700A in a uniform field with magnitude 0.300T?

Physics

The earth has a radius of 6380 km and turns around once every 24 hours. What is the average speed of a person resting at the equator?

Physics

Calculate the skid to stop distance of a car traveling on a road at 100 kilometers per hour with a coefficient of friction of 0.68.....

physics

While rearranging a dorm room, a student does 307 J of work in moving a desk 1.1 m. What was the magnitude of the applied horizontal force?

PHYSICS

In an archery practice an arrow was realesed from a bow with a velocity of 20m/s it strikes and slopes find at what rate the aarrow was aaccelarated

Physics

A truck of mass 2 tonnes moving at a speed of 25 m/s is brought to rest suddenly in 5 seconds. Calculate the power exerted by the brakes

science(physics)

A powerful motorcycle can accelerate from rest to 28m/s in only 4 second . a.what is its average acceleration? b.how far does it travel in that time

physics

What is the acceleration (in meters/second^2) of free falling 74kg sky diver, if the air resistance exerts a force of 233n?

Physics

A rocket initially at rest accelerates at a rate of 80 m/s^2 for 0.74 min. What is its speed at the end of this time? Answer in units of m/s. Plz help and explain

Physics

What is the escape speed of an electron launched from the surface of a 1.5 cm diameter glass sphere that has been charged to 10 nC? Which equation(s) would I use?

Physics

A 70 kg waterslide rider traveling at 15 meters per second hits a ramp with a 58 degree launch angle - How high will they fly?

Physics 11

An airplane flies at 500km/hr, there is a wind kf 50.0km/h(N).if the pilot wants to fly due east, calculate the direction that the plane is heading. Thanks.

Physics

A stone thrown upward to just reach the top of a palm tree that is 8.2m tall. Calculate the initial speed that is require

Repost(Physics)

A vehicle moves in a straight line with an acceleration of 2 km/h^2. By how much does the speed change each second? Answer in units of km/h. Plz help?

Physics

An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

physics (urgent)

A flywheel with a moment of inertia of 1.00kg m^2 is rotating at 100 rpm. What torque is required to bring it to rest in 10.0 revolutions?

Physics

How long will it take a motor with an output power of 4000 W to lift a 250 kg container vertically upwards 25 m? how would u do the calculation?

physics

A stone of mass 2.8kg is projected upward with a speed of 5m/s. calculate the maximum height reached. use g=10m/s square.

physics

consider your sitting in a chair inside the living room on a leveled floor.if you are at the origin what will be the position vector of spider on any of wall

Physics

Two spherical objects have masses of 3.5 x 10^7 kg and 6.5 x 10^9 kg. Their centers are separated by a distance of 125000 m. Find the gravitational attraction between them.

Physics

A baseball is thrown at an angle of 20◦ relative to the ground at a speed of 25.8 m/s. The ball is caught 43.6152 m from the thrower. The acceleration due to gravity is 9.81 m/s2 .

physics

Geostationary satellites are placed on orbits of radius 4.2×10^4m use this information to deduce g, the acceleration of freely falling body, at this height.

Physics

A simple pendulum is oscillating with an angular amplitude 60°.If mass of bob is 50 gram the tension in the string at mean position is(g=10m/s2)

physics

A particle (p) moves along the curved surface (s). Show that p will remain in contact with s provided that at all times its speed v≥√rgcosteta.

Physics

A 300v battery is connected across capacitors 3uF and 6uF in parallel. Evaluate the charge and energy stored in each capacitor

Physics

C:\Users\100622325\Desktop\1.jpg Given the figure above, if a = 5.53 cm and b = 4.15 cm, what would be the force (both magnitude and direction) on the 5.0 nC charge?

physics

How much heat is absorbed by a 30g iron skillet when its temperature rises from 24oC to 93oC? Joules do i addition everything?

PHYSICS

An object is projected horizontally on a floor at 100ft/s. It then decceledates at 10ft/s2. After 5sec what are a.the speed of the body b. The distance it traversed

physics

How much time will it take a car travelling at 88 km/hr (55 mi/hr) to travel 500km? Show work for credit and include final units.

physics

From the graph made, compute for the instantaneous acceleration of the rider for each inclination at any chosen time by computing for the slop of the tangent line?

physics

A beer is dropped from a window 30 m above the ground. How fast will it be moving just before it lands? (Neglect air resistance).

Physics

A point light source is kept in front of a convex mirror at a distance of 40cm.find the position of image by drawing

physics

the current through a meter movement is 150 micro amperes. what is the dc value if the instrument uses half-wave rectification?

physics

A 2.0 kg mass is sliding on a flat surface, with an initial speed of 20 m/s, and a coefficient of friction of 0.2. what is the magnitude of its acceleration? I know the answer is 2.0 m/s^2, but can someone show me how ?

Physics

Three particles have charges +20μC each.They are fixed at the corners of an equilateral triangle of side 0.5m .The force on each of particle has magnitude

Physics

If you were to launch a block with m = 0.500 kg up a ramp with θ = 15ο and µk = 0.30 with a plunger with k = 100 N/m which compresses by 0.040 m, what distance would you expect to travel?

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