73,661 results, page 59
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
--------------A /l\ / 1 \ / 1 \ / 1 \ 1 B C the pendulum has a string of .075m. velocity at c is 3.83m/s how do i find the speed at point b when the angle of B and C is 37 degree
calculate angular momentum and rotational kinetic energy of earth about its own axis
At what rate is a 60.0-kg boy using energy when he sprints up a flight of stairs 10.0 m high in 8.00 s? A. 75.0 W B. 48.0 W C. 735 W D. 480 W E. 4.80 kW
a stone of mass 0.5kg is drop from a height of 12m. calculate; it's kinetic energy. (g=10m/s2).
How do you draw a force diagram for an object that is tied to a pole and is moving in a constant circular direction?
Efficiency of a single fixed pulley is 85%.what effort is needed to lift a load of 85kgf using it?
what is the work done in moving a positive charge 12UC across two points 6cm apart
4. Find the magnitude of the force between two charges Q1 = 3µC, Q2 = 2.5µC that are 50mm apart.
6. Two charges, Q1 = 4.6x10-9 C and Q2 = 4.3 x10-9 C, are 60mm apart. What is the electric field halfway between them?
A rock is dropped from a height of 2 meters into a freshwater pond. What is the medium of the wave created?
A vehicle is involved in a collision that produces a -1500 n net force. what is the acceleration of the 75.5 kg passenger in the car?
Describe the structure of an atom, the quantised shell model and how it produces absorption and emission spectra.
How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?
An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s2. What lifting force is supplied by its rotating blades?
A MACHINE HAS A VELOCITY RATIO OF 5 HAS AN EFFICIENCY OF 40.WHAT EFFORT WOULD BE NEEDED TO LIFT A LOAD OF 100N?
how much work is needed to raise a 6.0 Kg object14.0 m at constant speed?assume that friction is negligible.
Given the following vectors: A = (28, 110°) B = (63, -30°) Determine A + B. Specify the sum as both Cartesian and polar.
if the body describes a vertical circle then the minimum velocity at angle theta from lowest position is
a particle moving on a circlehas a velocity of m/s and normal acceleration of 10m/s2.determine the radius of the circle.
The length of wire is 25.5cm and it's radius is 1.02mm. Calculate the percentage error in mesurement of its volume
What is the magnitude of force required to accelerate a car of mass 1.7 Ã— 10Â³ kilograms by 4.75 meters/secondÃ†?
A ball travels 200cm in the first 2sec and 220cmin the next 5sec. Find the velocity at 7s
if a machine is capable of accelerating at a constant speed of +20.0m/s^2 calculate the time required for it to go from -5.00m/s to +55m/s
What is the force needed to start a 100 kg block sliding on a horizontal if the coefficients for static and kinetic are 0.75 and 0.5
a boy travel 5km east and then12 km south.calculate his displacement from starting point.
How would I find final velocity at the top of an inclined ramp with a given angle theta?
A solid weigh 45N and 15N respectively in air and water. Calculate the relative density
What minimum speed does a 130 g puck need to make it to the top of a 3.8 m -long, 23 ∘ frictionless ramp?
What effort is exerted to lift a load of 150N with a machine having a velocity ratio of 3 and efficiency of 20%
Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C. I forgot the formula
How much potential energy is required to lift a 50 gram arrow to a height of 100 meters?
Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
Calculate the ratio of the drag force on a passenger jet flying with a speed of 750 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at one-fifth the speed and half the altitude of the jet. At 10 km the density of air is 0.38 kg/m3 and at 5.0 km...
This is a very confusing problem, I had never taken physics before and it is going to kill my GPA. can someone please help me solve this problem. I have a quiz coming up. Thanks for the help. The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 137...
When there is no air resistance objects with different masses fall with....... A. equal accelerations and different displacements B. equal accelerations and similar displacements C. different accelerations and similar displacements D. different accelerations and displacements ...
I am doing a paper that entails my knowledge of physics to prove errors in the movie Transformers. There is one scene in the movie where Shia (Sam, the hero) falls in Optimus Prime's hand, from around 20 stories high. Obviously Sam should ooze out of Prime's hand, but of ...
Posted by Mary on Monday, September 3, 2007 at 12:40pm. download mp3 free instrumental remix A charge of +2q is fixed to one corner of a square, while a charge of -3q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center...
This is based off of the paper "Scaling -- The Physics of Lilliput", but I think the following questions can be answered out of context: 1. Based on the Lilliputian reading: A) A rectangular water tank is supported above the ground by 4 pillars 5.0 cm long whose diameters are ...
A 3.0 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 18 N at an angle = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.) Calculate ...
The 3.25 kg physics book shown is connected by a string to a 472.0 g coffee cup. The book is given a push up the slope and released with a speed of 3.79 m/s. The coefficients of friction are μs = 0.595 and μk = 0.241. What is the acceleration of the book if the slope...
Your physics teacher drives an ideal frictionless car of mass 1000 kg which coasts along the level road to his home at a constant speed of 48 km/h with the engine turned off. It then coasts 40 m up his sloping driveway and comes to rest at the top without any braking required...
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. b. Calculate the wavelength of light emitted with the shortest possible ...
pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john? b)what's the ...
i understand the PE and KE and MKE points and how gravity effects a pendulum, but how does kenetic and potential energy effect it?
in the equation P= 2m/ ne^2 t what do these symbols mean? p - resistor m - mass of e- n - ?? e - electron charge>?? t - time between collisions??
IT TAKES YOU 9.5 MIN TO WALK AN AVREAGE VELOCITY OF 1.2 M/S TO THE NORTH FROM THE BUS STOP TO THE MUSEUM ENTRANCE. WHAT IS YOUR DISPLACEMENT?
4.A mass of one kg of nickels has a monetary value in the US $ of approximately: a. $1 b. 10 cents c. $10 d. $1000 is it c?
bobpursley can you please check my reply to your post about my question? I am not sure if I did my equation correctly. Thanks
Could someone tell me if this is right? The voltage across a 10-ohm resistor carrying 3 amps must be E=I*R == E=3*10= 30 volts
Is the answer to this 4? If the filament resistance in an automobile headlamp is 3 ohms, how many amps does it draw when connected to a 12-volt battery?
I have a 1000 ohm resistor with a measured resistance of .967 how do I use submultiples or mutliples to get it in the SI units?
Describe alpha, beta, and gamma rays. What exactly is each ray composed of? What are their characteristic radiation characteristics?
A football is kicked at 15 m/s with an angle of 35 degrees with the ground. How long is it in the air? How far will it land? Can someone help plz... Thanks!
A positive and a negative charge, each of magnitude 1.7 10-5 C, are separated by a distance of 11 cm. Find the force on each of the particles. what formula do i use?