208,687 results, page 62
At 7.15 cents per kilowatt-hour, what does it cost to leave a 75.0W light burning 24.0 hours a day?
A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?
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?
Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?
Determine the resulting temperature when 1kg of ice at 0 Degree celcius is mixed with 9kg of water.
A boy drops a mango from a tree it falls without rebound wat happens to its momentum
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???????
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.
Mechanical energy is the difference between the kinetic and potential energies of an object. true or false?
a person covers a distance of 31 km and displacement 3 kms and time 25.5 min calcuclate average velocity
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?
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?
'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'
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?
damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!
light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?
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 .......
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?!
From what height must water fall from a dam to strike the margine waves w/ a speed 30m/s.
what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m?
Calculate the centripetal force on a 2100 kg carrounding a curve of 175 m radius at a speed of 60 kph.
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?
How much heat is needed to convert 1.0kg ice at -5celsius to steam at 105 celsius?
Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius. thank you
What are three different kinds of automatic switching devices? What are the conditions that cause the on/off action of the switch?
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?
Suppose the horizontal sweep of an oscilloscope takes 80ms how many cycles of a 100 Hz wave will be shown?
A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.
What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart.
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.
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?
a body travels from rest with acceleration 8ms find its velocity when it has covered a distance of 100m
What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction?
mike is skiing downhill at a 25 degree angle. if his weight is 350N assuming there is no friction what is his acceleration
TWO FORCES F1 AND F2 ARE ACTING AT RIGHT ANGLE TO EACH OTHER FIND THE EXPRESSION FOR THE RESULTANT FORCE?
a 4200 kg helicopter accelerate upward 3m/s^2. lift force is exerted by the air on the propellers?(g=10m/s^2)
How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?
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.
What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground?
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
Wat direction will the Electric Field Lines be in a parallel plate capacitor containing a dielectric ?
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?
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?
Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high
How long it takes a car at 20m/s to come to a stop without friction, obstacles, or breaks ?
Find the range at an arrow that leaves a bow at 45 m/s at an angle of 50 degrees above the horizontal level.
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.
calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
A ball is thrown vertically upward with a velocity of 30m/s. Determine the maximum height reached
What is the total time of flight of an object projected vertically upwards with a speed of 30m/s? (g=10m/s^2
When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........
Why can't most objects like an apple travel at speeds above the speed of light?
How much work is required to bring a 1000 kg racing car traveling at a speed of 60 km/hr to rest?
A boy sliding down a frictionless plane inclined at an angles 35° with the horizontal. What is the acceleration of the book?
the current in an rc circuit if the resistance is 20 ohms the capacitance is 0.002 farad the emr is 12e^-10t
Q1. What is the working principle of the loudspeaker. Q2.Explain the following:- 1.Beat 2.Shock wave 3.Mach effect.
A brick has mass 10kg and dimensions (10*5*20)cm Find the maximum and minimum pressure it can exert on ground
A cell phone emits signs in approximately 750 Mhz. Which is the wavelength and energy of this radiation
Given a plastic rod and fur,explain how you would charge the electroscope positively and negatively.
An engine works between the two temperatures 200 C and 120 C. Calculate its efficiency in percentage?
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
you hear a thunder 4 seconds after you see the lightning. how far away is the storm?
What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius
A period pulse travel a distance at 20m in 1•00sec,if it's frequency is 2•0×10.calculate the wave length
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state?
an object undergoes an acceleration of 10m/s2 starting from rest. find the distance travelled by it in seconds
a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec
The distance between any two points in a thermometer is 10cm.mercury level is 13 cm .temperature in Celsius?
A man walks 3m north then 4m east.calculate his displacement from the starting point.
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?
In general, what conditions with observable effects make magnets interact with non-magnet materials?
X(t)=0.142sin(2t+0.19) b) Find the travelled distance by block at t2=3.5min [37.963m].
A rocket is ignited and gone up. After that it returns to the ground. How to draw a displacement time of the same ?
If a bullet is shot at velocity of 400 m/s and hits a copper plate, how much heat will be produced?
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?
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).
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?
A plane flies at 150m/s at 35 degrees east of north. It encounters a wind from the west blowing 26 m/s.
How can the LIGO gravity wave detector achieve a measurement accurate to 1/1000 of a proton's diameter
What is the centripetal acceleration of an automobile driving at 40 km/h on a circular track of radius 20m? Help ASAP please!!!
Calculate the velocity time graph of a body at rest is given an initial uniform acceleration.
Calculate the velocity time graph of a body at rest is given an initial uniform acceleration .
State the reason why a steel sphere resting on a horizontal surface is said to be in neutral equilibrium.
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?
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
What is the angular speed of the earth as it orbits the sun a) in radians/second? b) in degrees per day?
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
Calculate the kinetic energy of a tennis ball with a mass of 58g served by Andy Murray at 58 m/s
A tennis ball is released at 30 degrees. It reaches max height of 20 ft find initial speed
a circular wheel rotate 200 nos. of revolution in 30 seconds. find its angular velocity
An electric fan is rated 240W,25V.Which fuse value is more suitable for the set
A cuboid has TSA 40 sq. m and latral surface 26 sq. m. Find the base area.
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
A ball is allowed to fall freely from certain heightn. What distance it covers in 1st second?
A constant 5 N horizontal force hits a stationary 2 kg ball. What is the balls speed after going 10 m?
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
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
You drill a well to a depth of 100-m. Find the difference in water pressure, comparing the top and bottom of the well