# Math/Physics

208,687 results, page 62

### physics

At 7.15 cents per kilowatt-hour, what does it cost to leave a 75.0W light burning 24.0 hours a day?

### physics

A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?

### Physics

1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?

### PHYSICS

Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin

### physics

a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?

### PHYSICS

Determine the resulting temperature when 1kg of ice at 0 Degree celcius is mixed with 9kg of water.

### physics

A boy drops a mango from a tree it falls without rebound wat happens to its momentum

### Physics

An arrow is shot horizontally with a speed of 20 m/s from the top of a tower 60 m high .The time to reach the ground will be???????

### Physics

Steam of mass 11.0 g at 100°C is added to 126.7 g of ice at 0.00°C. Find the final temperature of the system.

### physics

Mechanical energy is the difference between the kinetic and potential energies of an object. true or false?

### physics

a person covers a distance of 31 km and displacement 3 kms and time 25.5 min calcuclate average velocity

### Physics

What is the tension in a 1-meter string that is spinning a 0.5-kg rock in a horizontal circle 3 times per second?

### physics

You have a mass of 60 kg and run up some stairs that are 5 m high in 6 seconds. How much power did you produce?

### PHYSICS

'show that a 2.5m length of wire with cross section area 0f 1.0mm and resistance of 0.75ohms has a resistivity o f 3.0 ×10-7'

### Physics

If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?

### physics

damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!

### physics

light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?

### physics

A bicycl rider starts from rest and moves with uniform acceration of 1.5m\s^2 it is velocity reachs 7.5m\s of a distance .......

### physics

A 2000-kg car starts from rest and gains a velocity of 20 m/s in 5 /0s. What force was applied on it? What formula/s will I use?!

### Physics

From what height must water fall from a dam to strike the margine waves w/ a speed 30m/s.

### PHYSICS

what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m?

### PHYSICS

Calculate the centripetal force on a 2100 kg carrounding a curve of 175 m radius at a speed of 60 kph.

### physics

Results for: In An Ideal Transformer, The Voltage And Current Are 220V,2A And Those In Secondry Are 2000V, IA. The Value Of I Is?

### physics

How much heat is needed to convert 1.0kg ice at -5celsius to steam at 105 celsius?

### physics-heat transfer-urgent pls

Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius. thank you

### Physics

What are three different kinds of automatic switching devices? What are the conditions that cause the on/off action of the switch?

### PHYSICS

compute for the density of a brake fluid used in a car which has a volume of 600cm^3 and a mass of 100 g?

### physics

Suppose the horizontal sweep of an oscilloscope takes 80ms how many cycles of a 100 Hz wave will be shown?

### Physics

A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.

### PHYSICS

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart.

### physics

Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s.

### Physics

An object initially at rest experiences an acceleration of 9.8 m/s^2. How much time will it take to achieve a velocity of 58 m/s?

### physics

a body travels from rest with acceleration 8ms find its velocity when it has covered a distance of 100m

### AP Physics

What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction?

### Physics

mike is skiing downhill at a 25 degree angle. if his weight is 350N assuming there is no friction what is his acceleration

### PHYSICS

TWO FORCES F1 AND F2 ARE ACTING AT RIGHT ANGLE TO EACH OTHER FIND THE EXPRESSION FOR THE RESULTANT FORCE?

### physics

a 4200 kg helicopter accelerate upward 3m/s^2. lift force is exerted by the air on the propellers?(g=10m/s^2)

### Physics

How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?

### Physics

How many coulombs pass through a wire that carries a current of 3.2 A for 5.0 h? I=Q/t Q=It Q=3.2*5*60 Q=960 I am told this is not the correct answer.

### Physics

What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground?

### physics

an object takes 0.35 seconds to hit the floor, what height did it fall from? is the way to calculate it h = gt^2 / 2 so would it be = h = .5 * 9.8 * 0.35^2

### Physics

Wat direction will the Electric Field Lines be in a parallel plate capacitor containing a dielectric ?

### physics

2)if a curved of radius 50m is banked at 30 degree will a car travelling at 60 km/hr along the curve will safe?

### physics

A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?

### Physics

Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high

### Physics

How long it takes a car at 20m/s to come to a stop without friction, obstacles, or breaks ?

### Physics

Find the range at an arrow that leaves a bow at 45 m/s at an angle of 50 degrees above the horizontal level.

### Physics

What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.

### physics

calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v

### physics

calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v

### Physics

A ball is thrown vertically upward with a velocity of 30m/s. Determine the maximum height reached

### Physics

What is the total time of flight of an object projected vertically upwards with a speed of 30m/s? (g=10m/s^2

### physics

When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........

### Physics HW Plz help

Why can't most objects like an apple travel at speeds above the speed of light?

### Physics

How much work is required to bring a 1000 kg racing car traveling at a speed of 60 km/hr to rest?

### Physics

A boy sliding down a frictionless plane inclined at an angles 35° with the horizontal. What is the acceleration of the book?

### Physics

the current in an rc circuit if the resistance is 20 ohms the capacitance is 0.002 farad the emr is 12e^-10t

### Physics

Q1. What is the working principle of the loudspeaker. Q2.Explain the following:- 1.Beat 2.Shock wave 3.Mach effect.

### Physics

A brick has mass 10kg and dimensions (10*5*20)cm Find the maximum and minimum pressure it can exert on ground

### PHYSICS

A cell phone emits signs in approximately 750 Mhz. Which is the wavelength and energy of this radiation

### PHYSICS-

Given a plastic rod and fur,explain how you would charge the electroscope positively and negatively.

### Physics

An engine works between the two temperatures 200 C and 120 C. Calculate its efficiency in percentage?

### Physics

An object of weight W hangs by three ropes as shown above. What is the value of the angle @ if T1 = T2 = W? ____________ \@ @/ T2\ /T1 \__/ |W| a) 15 b) 30 c) 40 d) 45 e) 60

### Quick physics help

you hear a thunder 4 seconds after you see the lightning. how far away is the storm?

### physics

What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius

### Physics

A period pulse travel a distance at 20m in 1•00sec,if it's frequency is 2•0×10.calculate the wave length

### Physics

What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state?

### physics

an object undergoes an acceleration of 10m/s2 starting from rest. find the distance travelled by it in seconds

### physics

a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec

### Physics

The distance between any two points in a thermometer is 10cm.mercury level is 13 cm .temperature in Celsius?

### University of jos,physics

A man walks 3m north then 4m east.calculate his displacement from the starting point.

### Physics

how many coulombs must be on one object for it to be repelled with a force of 6.0 N by a second charge of 2.0uC at a distance of 1.0 m?

### Physics

In general, what conditions with observable effects make magnets interact with non-magnet materials?

### physics (Simple harmonic motion)

X(t)=0.142sin(2t+0.19) b) Find the travelled distance by block at t2=3.5min [37.963m].

### Physics

A rocket is ignited and gone up. After that it returns to the ground. How to draw a displacement time of the same ?

### Physics

If a bullet is shot at velocity of 400 m/s and hits a copper plate, how much heat will be produced?

### Physics

A bean jumps off a table and when it reaches have its height it has a speed of 10 m/s, how high does it rise?

### mathematical physics

Using Green's Theorem evaluate the integral ∮c(xydx + x^2y^2 dy) where C is the triangle with vertices (0 ,0), (1, 0) and (1, 2).

### physics

how large a fore (in newtons) is needed to accelerate a 5 metric-ton vehicle from rest to a speed of 10 km/hr in 4 s?

### physics

A plane flies at 150m/s at 35 degrees east of north. It encounters a wind from the west blowing 26 m/s.

### physics

How can the LIGO gravity wave detector achieve a measurement accurate to 1/1000 of a proton's diameter

### Physics

What is the centripetal acceleration of an automobile driving at 40 km/h on a circular track of radius 20m? Help ASAP please!!!

### physics

Calculate the velocity time graph of a body at rest is given an initial uniform acceleration.

### physics

Calculate the velocity time graph of a body at rest is given an initial uniform acceleration .

### Physics

State the reason why a steel sphere resting on a horizontal surface is said to be in neutral equilibrium.

### Physics

If your hands are wet and no towel is handy, you can remove some of the excess of water by shaking them. Why does this get rid of it?

### Physics

A cube of ice, 28 cm on each side,is melted into a measuring cup. What is the volume of the liquid water -------cm^3

### Physics

What is the angular speed of the earth as it orbits the sun a) in radians/second? b) in degrees per day?

### Physics

A tennis ball is thrown with a velocity of 30m/s at an angle of 60^ of the horizontal calculate the time,m/s,and the range

### physics

Calculate the kinetic energy of a tennis ball with a mass of 58g served by Andy Murray at 58 m/s

### Physics

A tennis ball is released at 30 degrees. It reaches max height of 20 ft find initial speed

### physics

a circular wheel rotate 200 nos. of revolution in 30 seconds. find its angular velocity

### Physics

An electric fan is rated 240W,25V.Which fuse value is more suitable for the set

### maths, geography, physics, chemistry

A cuboid has TSA 40 sq. m and latral surface 26 sq. m. Find the base area.

### physics

when temperature increases from t to # t and the moment of inertia is increase from I to #I. the coefficent of linear expansion is alpha .THE RATIO OF #I\I IS

### Physics

A ball is allowed to fall freely from certain heightn. What distance it covers in 1st second?

### Physics

A constant 5 N horizontal force hits a stationary 2 kg ball. What is the balls speed after going 10 m?

### Physics

Time taken by an object falling from rest to cover the heights of h1and h2 are respectively t1 and t2.then the ratios of t1 and t2 is

### physics

Find the power delivered to an element at t=3 ms if the current entering its positive terminal is i=5cos60πt A and the voltage is V=3 di/dt