# 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?