# Math/Physics

208,687 results, page 98

### Physics

A ball of mass 8kg falls from a height of 100m,neglecting air resistance calculate it total energy after falling a distance

### Physics

A car of mass 1000kg starting from rest and comes down an incline slope if it travel 300m in 30 second calculate i) acceleration ii) force

### Physics

A cubes weight 15N in air and 20N when totally immersed in water. Find the value of the cube of the density. Please I need the answer.

### Physics

A novice skier starts from rest and slides down a frictionless 35 degree incline whose height is 125 m. How fast will she be going at the bottom?

### Physics

write an equation that relates to frequency(f) applied to the string to the length(L) between the two fixed end points. This was from lab of standing waves.

### Physics

A flywheel turns through 60 rev as it slows from an angular speed of 2.8 rad/s to a stop. How much time is required for it to complete the first 30 of the 60 revolutions?

### modern physics

Supersonic jets are able to achieve maximum speeds of up to 3.0 × 10-6c. Calculate the percentage contraction in the length of a jet plane travelling at this speed.

### modern physics

Supersonic jets are able to achieve maximum speeds of up to 3.0 × 10-6c. Calculate the percentage contraction in the length of a jet plane travelling at this speed.

### Physics

I am not getting the difference between distance and displacement.... without using the words scalar and vector quantity, of course, i know what they mean but still i need help with this... so please help!!!

### Physics

Find the angle of elevation of a gun that fires a shell with muzzle velocity of 125m/s and hits a target on the same level but 1.55km distance

### physics

A man whose mass is 75kg walks up a stairs each 20cm high in5seconds.calculate the power expended in watts.[assume g=10m\s2

### Physics

Hello, I am wondering if someone can answer me this question: In an Atwood machine why do the tensions that handle both bodies are the same? (English is not my native language)

### Physics

A rectangular track is 40m long 30m broad.A man starts walking from one corner to another . Find the distance travelled and displacement.

### Science (physics)

A powerful motorcycle can accelerate from rest to 28 metre per second in only 4 seconds what is the average acceleration? How far does it travel in that time

### Physics

A particle dropped from vertically downward from the top of the building, find the displacement of the nth second, 1st, 2nd, 3rd and 4th seconds.

### Physics

Find the work done by a white collar criminal as he pulls his 34 kg bag of booty 2.7m forward at an angle of 61 degrees with the floor. The man is pulling with a force of 19.4 N.

### physics dps

a light spiral spring is fixed at the top and a mass of 200gms is suspended from its lower end so that it has of 20cm find period of oscillations

### physics

A bucket filled with water weighing 50kg is raised from a well of depth 100m.if the linear density of the rope is 1kg per metre.then the work done is

### Physics

please help: "george drops a stone from atop a cliff of 25m. How long does it take to hit the ocean below, what velocity is it travelling when it gets there?"

### physics

Acceleration in meters per square second. A car begins at rest at a stop sign, it accelerates 25m/s over a time of 8.6sec

### Physics 1

A football is thrown upward at an 48◦ angle to the horizontal. The acceleration of gravity is 9.8 m/s^2. To throw an 80.4 m pass, what must be the initial speed of the ball? Answer in units of m/s.

### math

In a local school 34 students are enrolled in a math class, 85 are enrolled in an english class, 58 are enrolled in an art class, and 54 are enrolled in a history class. Construct a pie chart with this data. What is the central angle of the slice representing students enrolled...

### math

Use the following missing pieces to complete the runaway math puzzle. 2 6 6 0 1 8 0 5 Rewrite the equations from the runaway math puzzle. 1. __ - __ = ___ + ___ 2. 1 4 - ___ = ___+ 5 3. ___- ____ = ___ + ___ 4. 8 + ___ = 1 5 - 1 figure it out thank you 1.8-2=6+0 2.14-8=1+5 3.6...

### Physics

Once a favorite playground sport, dodgeball is becoming increasingly popular among adults of all ages who want to stay in shape and who even form organized leagues. Gutball is a less popular variant of dodgeball in which players are allowed to bring their own (typically ...

### English

Hello! I will type 2 exercises from the lesson I am teaching on Wednesday-english as a foreign language - 8th graders ( it will be graded) I need you to help me with some ideas. It says: LEAD- IN: A Here is a list of some natural sciences: BIOLOGY CHEMISTRY PHYSICS BOTANY ...

### Physics

An equipotential surface that surrounds a +2.7 x 10^-7 C point charge has a radius of 0.13 m. What is the potential of this surface?

### PHYSICS

THE TYPICAL RADIO WAVE HAVE A PERIOD OF 1 US EXPRESS THIS PERIOD IN SECONDS

### physics

why are lightweight tires preferred over lightweight frams in bicycle racing?

### Physics RC

how does the circuit potential difference,v, across the capacitor varies with R(resistance)in an RC circuit??

### physics

The,net,force,on,an,object,is,zero.Can,you,conclude,that,the,object,is,at,rest?Explain

### Physics

A satellite is in orbit 2500km above the surface of Earth. What is the velocity of the satellite in m/s?

### Physics

Compare 940 on the AM dial to 94 on the FM dial. Which has the longer wavelength and by what factor is it larger?

### Physics

Why are interference colors more apparant for thin films than for thick films?

### Physics

How could an element emit alpha and beta particles and result in the same element?

### physics repost

Calculate the sound level in decibels of a sound wave that has an intensity of 2.25 µW/m2. F

### PHYSICS

how could an element emit alpha and beta particles and result in the same element?

### physics

when a hot object warms a cooler object, does temperature flow between them

### Physics

In what way are fission and fusion reactions similar? What are the main differences in these reactions?

### Physics

If the distance between massive objects doubles, what happens to the force between them?

### Physics

How do you find the focal length of a concave lens using a convex lens?

### physics

How much does a 600 N spaceship weigh on the moon if the moon's gravity is 33% of Earth's?

### Physics

How could it be possible thaat an object with a density greater than that of water could float on water.

### physics

finding the acceleration of a simple pendulum g= 4pi^2 x length/T^2 T^2= 2.28 length= 70cm

### physics

what can be said about the speed of an object if the net work done on that object is zero?

### Physics

There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the -x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(-4ihat)7^3 where did i go wrong?

### Physics

If the rectangular coordinates of a point are given by (4,y), and its polar coordinates are (r,25 degrees), determine y and r.

### Physics

the sun's mass is 1.99*10^30 kg and it has a radius of 6.96*10^8 m.What is the Sun's gravitational field strength at its surface.

### Physics

the sun's mass is 1.99*10^30 kg and it has a radius of 6.96*10^8 m.What is the Sun's gravitational field strength at its surface.

### physics

What is the force between two balloons with negative charge of 2.3 x 10^-12 C if the balloons are 46 cm apart?

### physics

Is it true or false that momentum is conserved when total mechanical energy is conserved?

### Physics

The Moon's period of revolution around the Earth is 27.3 d. How far away is the moon?

### physics

Is it true or false that momentum is conserved when total mechanical energy is conserved?

### physics

The amplitude of an oscillator decreases to 69.0% of its initial value in 15.5s. a) What is the value of the time constant?

### physics

A soccer ball kicked with a force of 13.5 N accelerates at 6.5 m/s2 to theright.What is the mass of the ball

### Physics

Two joules of energy are required to extend a spring by .25 m. What is the spring constant?

### Physics

A single 11 Newton force is applied to an object of mass 19 kg. What is the acceleration of this object in m/s2

### Physics

A object of mass 2 kg experiences an acceleration of 4 m/s2. What is the net force on the mass in Newtons?

### physics

How do you convert from nanometres - metres and vice versa? I need to convert 0.6 X 10-6 (the -6 is an expom to nm...

### physics

A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

### PHYSICS!!!

If a machine cant multiply the amount of work , what is the advantage of using such a machine?

### PHYSICS!!!

If a machine cant multiply the amount of work , what is the advantage of using such a machine?

### Physics

A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

### physics

metal ball and rubber ball dropped in the 20 ft building in the same time.

### physics

If you are initially 1.50 km [E] of home and 0.65 hours later you are 0.75 km [N 45 degrees E] of home, what is your change in displacement?

### physics

If you are initially 1.50 km [E] of home and 0.65 hours later you are 0.75 km [N 45 degrees E] of home, what is your change in displacement?

### Physics

How will the weight of a 20kg object change in an elevator if the elevator moves downwards with 4 m.s?

### physics

a 10kg block is allowed to slide down a ramp with Mk=0.15. what is the acceleration of the block?

### physics

What is the wavelength of the radio waves broadcast by an FM radio station with a frequency of 90.5 MHz?

### physics

If we push on a heavy crate to the right and it slidesw, what is the direction of friction on the crate?

### physics

If you shout across a canyon and hear an echo 3.6 s later, how wide is the canyon?

### Physics

How much work (in J) is done to accelerate a car which has a mass of 3300 kg from a speed of 7 m/s to a speed of 16 m/s?

### Physics

Wave amplitude is related to what? (a) wave velocity (b) frequency (c) energy (d) wavelength

### Physics - Momentum

Under what circumstances is the change in momentum of a system equal to zero?

### physics

An object with an initial velocity of 5 m/s accelerates uniformly for 15 s. (a) If the final velocity is 37 m/s, what is the acceleration?

### Physics

What average force is required to stop an 1700 car in 7.0 if the car is traveling at 75 ?

### Physics

What average force is required to stop an 1700 kg car in 7.0 s if the car is traveling at 75 km/h?

### Physics

How do we prove that the displacement for a trip is equal to the sum of the dispalcements for each leg of the trip?

### physics

a basketball player can leap upward 0.5m. what is his initial velocity at the start of the leap?

### physics

A ball is kicked at a 37 degree angle, with a velocity of 14.6 m/s. How high and far does the ball go?

### physics

What average force is required to stop an 1300 -kg car in 9.0 s if the car is traveling at 90 km/h?

### physics

If a stone is thrown vertically up in a moving lorry,where will the stone fall? Explain.

### physics !!

How do I calculate the person of error in Centripetal force if it arises from 1% error of the Radius = 5.4 ?

### Physics

What average force is required to stop an 1600 -kg car in 8.0 s if the car is traveling at 80 km/h?

### physics

A 3.00 kg book is dropped from a height of 2.2 m. The acceleration of gravity is 9.81 m/s2 . a) What is its acceleration? Answer in units of m/s2.

### PHYSICS

The boy on the tower (20 m) throws a ball a distance of 60 m. At what speed, in m/s, is the ball thrown?

### Physics

Help how to find work If a worker pulls a 10kg bucket up a 25 m well, how much work has he or she done?

### physics

a child on a merry go round at 1.5 m is moving ______ times faster than child at .5 m

### physics

a projectile is shot up 25 m/s at an angle of 34 degress how high imto the air does the projectile go?

### Physics

Which of the following is not a unit of power? a)hp b)J c)W d)J/s I answered d. J/s because its measuring speed and not power. I don't know if its correct or not.

### Physics

a book weighs 4 N. When held at rest in your hands, the net force on the book?

### physics

a 0.180 kg ball falls 2.5m. How much work does the force of gravity do on the ball?

### physics

What provides the force when a car makes a turn? (This is dealing with centripetal force)

### physics

in pl spectrum what is the red shift and blue shift and also give the interpretaion

### physics

how can we calculate potential energy if we don't have mass but we have force or newtons?

### Physics

A tiny spring, with a spring constant of 1.20 N/m, will be stretched to what displacement by a 0.005 0-N force?

### physics

Pulling up on a rope, you lift a 4.05-{\rm kg} bucket of water from a well with an acceleration of 2.20 m/s^2. What is the tension in the rope?

### physics

Block A (70 N) and block B (21 N) are connected by a massless cord and are at rest. Given ìs = 0.8. What is friction A ?

### physics

Block A (60 N) and block B (40 N) are connected by a massless cord and are AT REST. Given ìs = 0.8. The friction on A is : 1. 40 N 2. 0 N 3. 24 N 4. 48 N 5. 20 N 6. 60 N 7. 16 N

### Physics

A constant friction force of 10 N acts on a 85 kg skier for 20 s. What is the skier's change in velocity?