206,302 results, page 62
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
--------------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†?
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 ...
Jeremy surveyed students at his school for his math project. When he analyzed the results, 38 students, or 18% of those surveyed, selected hamburgers as their favorite food. How many poeple did Jeremy survey for his math project? (Round your answer to the nearest whole number...
How do you solve a division problem using subtraction? (3rd grade math)
any good websites that explains everything about radians for gr12 math?
whats the math term for this following definition.......(a symbol for an unknown number?)
unscamble the word: ripem , phase , and clamidd into math words
What is the difference between combination snd permutations in Elementary math??
use propertise and mental math to find the value. 19+(28+21) 3 times 270 (86+27)+3
I have a math problem, and it says to explain what units my answer has. What does that mean?
how much will the value change? its 4th grade math please help?? 7,564 = 2
I have math fractions to add. I never went over these ,so please help. 7/8 + 3/4 + 15/24= 5/9 + 6/7= 4/5 + 11/15 + 17/30 = 1 7/8 + 2 11/16 =
Please can someone help me with my math homework I just really don't ge it. I'm in a panic. Thank you Sarah
Please help in unscrambling the following math vocabulary: TSREECVI DYNRCEIL YESHENOTUP Thanks!
I need help in creating 3 Math problems that has to do with Baseball. Does anyone know how to or websites to help me...
amy sloved 3/5 of her math problems and had 24 left to do. how many problmes did she solve ?
Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)
is this site free and you help my child with her math? she having a hard time with this subject
I am doing pre algabra math and I am in 7th grade I need help to simplify the expression
I need help on this math problem Solve the systems of equations by elimination. -2x+y=7 6x+12y=24
If class starts at 11:50 and lasts 1 hour 40 min how do you write a math equation?
i really need help in math. im just in 6 grader and i don't understand this' 24x - 10 = 18x - 4
five times the sum of a number and four into math expression
If y= ab, then b= a+b A line goes under ab. Please help, I have not taken math in many years.
Your math class has 27 students. There are 12 seniors and the rest are juniors. What is the senior-to-ratio?
Math riddle worksheet "did you hear about" 20 boxes Answer ASAP
vina has the following grades in math 88,85,89,95 and 91.What must be her sixth grade if she wants to get an average of 90?
In my math book I got a question saying 1\5 times 8/9. My answer is 1\5 am I correct.THANKS
The math problem is set up as a fraction in parenthesis 6 over 4. Evaluate the expression (6/4)
Simplify. (82 - 60) + [(-3 x 4) - 36÷4] 25 19 10 1 <- I think this one is right I really hate math!!! lol...
Jessica says she can add 1/3"2/6"3/9"4/12"and 5/15 together using mental math.Explain how she can do this.
I don't understand how to multiply rational expressions. My math book isn't helping at all.