# Math/Physics

206,302 results, page 62

### 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

### Physics

You drill a well to a depth of 100-m. Find the difference in water pressure, comparing the top and bottom of the well

### PHYSICS

--------------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

### physics

calculate angular momentum and rotational kinetic energy of earth about its own axis

### physics

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

### PHYSICS

a stone of mass 0.5kg is drop from a height of 12m. calculate; it's kinetic energy. (g=10m/s2).

### physics

How do you draw a force diagram for an object that is tied to a pole and is moving in a constant circular direction?

### Physics

Efficiency of a single fixed pulley is 85%.what effort is needed to lift a load of 85kgf using it?

### physics

what is the work done in moving a positive charge 12UC across two points 6cm apart

### Physics

4. Find the magnitude of the force between two charges Q1 = 3µC, Q2 = 2.5µC that are 50mm apart.

### Physics

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?

### physics

A rock is dropped from a height of 2 meters into a freshwater pond. What is the medium of the wave created?

### Physics 20

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?

### Physics

Describe the structure of an atom, the quantised shell model and how it produces absorption and emission spectra.

### Physics

How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?

### Physics

An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s2. What lifting force is supplied by its rotating blades?

### PHYSICS

A MACHINE HAS A VELOCITY RATIO OF 5 HAS AN EFFICIENCY OF 40.WHAT EFFORT WOULD BE NEEDED TO LIFT A LOAD OF 100N?

### Physics

how much work is needed to raise a 6.0 Kg object14.0 m at constant speed?assume that friction is negligible.

### Physics

Given the following vectors: A = (28, 110°) B = (63, -30°) Determine A + B. Specify the sum as both Cartesian and polar.

### Physics

if the body describes a vertical circle then the minimum velocity at angle theta from lowest position is

### physics

a particle moving on a circlehas a velocity of m/s and normal acceleration of 10m/s2.determine the radius of the circle.

### Physics

The length of wire is 25.5cm and it's radius is 1.02mm. Calculate the percentage error in mesurement of its volume

### physics

What is the magnitude of force required to accelerate a car of mass 1.7 Ã— 10Â³ kilograms by 4.75 meters/secondÃ†?

### Newtonian physics

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 ...

### math

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...

### math

How do you solve a division problem using subtraction? (3rd grade math)

### math

whats the math term for this following definition.......(a symbol for an unknown number?)

### math

unscamble the word: ripem , phase , and clamidd into math words

### MATH ELE.

What is the difference between combination snd permutations in Elementary math??

### math

use propertise and mental math to find the value. 19+(28+21) 3 times 270 (86+27)+3

### math

I have a math problem, and it says to explain what units my answer has. What does that mean?

### Math

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 =

### math

Please can someone help me with my math homework I just really don't ge it. I'm in a panic. Thank you Sarah

### Math

I need help in creating 3 Math problems that has to do with Baseball. Does anyone know how to or websites to help me...

### math

amy sloved 3/5 of her math problems and had 24 left to do. how many problmes did she solve ?

### Math - Trigonometry

Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)

### math

is this site free and you help my child with her math? she having a hard time with this subject

### math

I am doing pre algabra math and I am in 7th grade I need help to simplify the expression

### math

I need help on this math problem Solve the systems of equations by elimination. -2x+y=7 6x+12y=24

### Math

If class starts at 11:50 and lasts 1 hour 40 min how do you write a math equation?

### math

i really need help in math. im just in 6 grader and i don't understand this' 24x - 10 = 18x - 4

### math

five times the sum of a number and four into math expression

### MATH

If y= ab, then b= a+b A line goes under ab. Please help, I have not taken math in many years.

### math

Your math class has 27 students. There are 12 seniors and the rest are juniors. What is the senior-to-ratio?

### math

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?

### Math

In my math book I got a question saying 1\5 times 8/9. My answer is 1\5 am I correct.THANKS

### Math

The math problem is set up as a fraction in parenthesis 6 over 4. Evaluate the expression (6/4)

### Math

Simplify. (82 - 60) + [(-3 x 4) - 36÷4] 25 19 10 1 <- I think this one is right I really hate math!!! lol...

### math

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.

### math

I don't understand how to multiply rational expressions. My math book isn't helping at all.