# Math/Physics

211,502 results, page 34

### physics

What force is required to accelerate a 90kg bike to 20 m/s in 15 sec? I need to know HOW to do it!

### physics

With acceleration of 2500 m/s2, how long will it take to rreach speed of light

### physics

Calculate the mass of the Earth, if it had a radius of 3000 km and a gravity of 6 m/s^2.

### physics bob

yeah im really confused. is there any way i can pay you to be my tutor

### physics

A car that decreases its speed from 100 km/h to 20 km/h undergoes ______ acceleration.

### physics

express the angular velocity of the second hand on a clock in rev/hr

### Physics

How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?

### Physics

A football is thrown at 14.0 m/s at an angle of 35.0 degrees. How far away does it land?

### Physics

How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?

### physics

A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m

### physics

A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m

### Physics

You are standing 0.75 m from your bathroom mirror in the morning. How far away is your image from you?

### physics

how long does it take to do 432 joules of work with 75 watts of power?

### physics

if 478 watts of power are used in 14 seconds, how much work was done?

### Physics

A 3.5 kg body accelerates from rest to 20 m/s in 5 s. Calculate: A its acceleration B the force required.

### Physics

Why does tension in a rope increase as the rotational speed of a ball increases?

### 11th grade physics

A car slows down from +32 m/s to +8 m/s in 4s. Calculate the acceleration .

### Physics

The 2010 Mustang GT accelerates from 0 to 60 mph in 5.2 seconds. What is the acceleration rate? in m/s/s?

### physics

what happens to the gravitational energy of a firefighter when he slides down the firepoles?

### physics

What force is necessary for a person to hold a 50 kg mass over their head?

### physics

What force is necessary for a person to hold a 50 kg mass over their head?

### Physics

An arrow is shot from a bow at 42 m/s at 70 degrees what is the horizontal and vertical components

### physics

If 53 W of power are exerted and the amount of work done is 7 N-m, how much time did it take?

### Physics

Describe Robert Millikan's experiment and what significant info he learned?

### physics

if you exert a force of 500 N to walk 4 m up a flight of stairs in 4 s, how much

### physics

pls show answers and work with the questions i have posted.

### physics

What is the mass of a marble cylinder with a diameter of .42m and a length of 1.25m?

### physics

if a wooden beam is 30 x 20 x 500 cm. and has a mass of 150 kg. what is the density of the wood

### physics

what is tangential velocity of the earth as it travels in its orbit around the sun?

### Physics

Calculate the volume of a spherical balloon which has a surface area of 0.0793 m2

### physics

Calculate the number density of strontium titanate (SrTiO3), ρ = 5.12 g cm -3

### physics

What is the height of 3.0 meter ladder leans against a wall 37 degree.

### Physics

What are the components of a vector of magnitude 1.5 m at an angle of 35 degrees from the positive x-axis?

### Physics

Show that work done in a wire, E=YAsqr(e)/2l, explainthe symbols. pls help.thanks

### Physics

a sled is capable of reaching speeds of 450 m/s in 1.82 s then stopped in 1.92 s what is the acceleration

### Physics

What is the efficiency of an athlete who consumes 3000kcal of food and does 2.5 x 10*6 J of useful work?

### AP Physics B

What's the equation to find the maximum height after a spring decompresses?

### physics

Suppose that you have a circle with a radius of 4.02 ± 0.39 m, what is the calculated uncertainty in the area?

### physics

Carrying out the following mathematical manipulations: (5.78 +/- 0.04)^2 How do you set this problem up?

### Physics

If a 75-kg skater starts his skate at 8.0m, at his lowest point (height = 0), what is his velocity?

### physics

A car has an acceleration of 16 pc/y2. This value can be CONVERTED into which of the following units?

### physics

what is the kinetic energy of a 200 g bullet travelling at a velocity of 400 m/s?

### physics

how does temperature affect the time it takes to reach thermal equilibrium?

### physics

a car accelerates from 5 m/s to 21 m/s at a rate of 3m/s^2 how far does it travel while accelerating

### physics

there is any peak shift between bulk and nano materials in xrd.

### Physics

Calculate the magnitude of the potential difference between points a and b in the figure if R1=2.36 Ù, R2=4.29 Ù,and R3=10.08 Ù.

### Physics

If the amplitude of a sound wave is quadrupled, by what factor will the intensity increase?

### physics

the kilowatt-hour is a unit of: force, work, power, or time?

### Physics

How many calories are released when 3 grams of 100º C steam turns to 0º C ice

### physics

A mass is attached to a string and then dropped. What is its velocity after 5 sec?

### Physics

How much work is done in accelerating a 2000 kg car from rest to a speed of 30 m/s?

### Physics

A rock is dropped from a height of 2.7 m. How fast is it going when it hits the ground?

### PHYSICS

Determine the equivalent capacitance between A and B for the group of capacitors in the drawing. Let C1 = 12 µF and C2 = 4.0 µF.

### physics

how high does a stone rise if it initially thrown at a rate of 15m/s?

### physics

traveling at 27.78 m/s with a deceleration rate of 5m/s squared.....How long will it take you to decelerate to 0.

### physics

traveling at 27.78 m/s with a deceleration rate of 5m/s squared.....How long will it take you to decelerate to 0.

### physics

Three charges, +2.5 µC, -4.3 µC, and -6.0 µC, are located at (-0.20 m, 0.15 m), (0.50 m, -0.35 m), and (-0.42 m, -0.32 m), respectively. What is the electric field at the origin?

### physics

Three charges, +2.5 µC, -4.3 µC, and -6.0 µC, are located at (-0.20 m, 0.15 m), (0.50 m, -0.35 m), and (-0.42 m, -0.32 m), respectively. What is the electric field at the origin?

### physics

what can you say about the forces on a brick lying still on the floor?

### physics

At what distance (in m) from a 3.8 mC charge is the electric potential equal to 32 V? (k = 9 x 109 Nm2/C2)

### physics

if the initial velocity is .05 m/s and its final is 1.3 m/s then how much energy is lost to friction

### physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water.

### physics

How much voltage is there in a circuit with a resistance of 12 ohms and a current of 3 amps

### physics

state 8 object each used in sport and welfare,which may be considered as projectile

### physics

Why is it impossible for a material to have an index of refraction less than one

### physics

How does pressure work as a restoring force to create a sound wave?

### science physics

describewhat is an importance of microscope to mankind it's urgent please help?

### Physics

A block of mass 5kg is lifted 2m in 3sec. Find the work done.

### physics

what is the speed of light moving through a medium of index refraction 2.45?

### Philosophy

In what ways can we say that quantum physics both is and is not classical science?

### Physics Class

The equation describing the motion of an object is y=0.8cos(4.2t+0.32). What is its period?

### physics

what is the gravitational force on a 60k person on the earth, due to the moon?

### physics

if you kick a football at a 30 degree angle, how many seconds is it in the air, and how high does it go

### PHYSICS !!!!!!!!!!!!!!!!!!!!!!!!!!!!

a wave has a frequency of 2 Hz. find its period ? please show work.....

### physics

what is the diameter if a 1.00m tungsten wire whose resistence is 0.22 ohms?

### physics

what is the diameter of a 1.00 m length of tungsten wire whose resistance is 0.22 ohms?

### Physics(Please Help!!)

how do you solve the following equation: 77.18 kg* 9.81* 5.83 divided by 4.37 and what does the asterisk stand for

### physics

Can a metal sphere of radius 1cm hold a charge of 1coloumb

### physics

How will changing the charge change the electric field strength at a distance?

### Physics

Using the Bohr model of hydrogen, find the linear momentum, when n=3.

### physics

What emf is required to cause 12 amperes to flow through a resistance of 7.2 ohms?

### physics

i need to make a working model on the applications of electric generator

### physics

when you peddle a cycle, it goes fowrward, when you backpeddle-nothing happens. why?

### College Physics

What is the momentum of an automobile (weight = 9700 N) when it is moving at 36 m/s to the south?

### physics

What is the momentum of an automobile (weight = 9800 N) when it is moving at 36 m/s to the south? magnitude

### physics

A body of mass 20kg dropped from a height of 2m calculate the workdone?

### physics

What current flows when a 40 v potential difference is imposed across a 1.8 kÙ resistor?

### Physics

True or False Light is both a mechanical wave and a particle

### Physics

What hanging mass will stretch a 1.9-m-long, 0.54 - diameter steel wire by 1.2 ?

### Physics

If 60 Cal. are added to 6 g. of iron at 20 degrees Celsius what is the final temp.

### physics

A BODY THROWN UPWARD ALWAYS FALLS ON THE GROUND ,EXPLAIN IT?

### physics

two velocities each 5 ms-1 are inclined to each other at 60 degrees find the resultant

### physics

A piece of metal has a density of 0.20g/cm^3.what is the volume in cm^3 of a 1g sample of a substance?

### Phys Science

ok i posted it twice and no one has yet to help me about my physics

### Physics

All the formulars for solving motion under gravity and waves

### physics

how to explain the relationship between the mass of the rotating object and its period?

### physics

one electron travels twice as fast as another. Which has the longer wavelength?

### physics

How much work is done when a mass of 30N is lifted vertically through 6m

### physics

A bus traveling at 30.0km/h accelerates at a constant 3.5 m/s^2 for 6.8s. what is its final velocity?