Math/Physics

209,467 results, page 49

physics

what force is acting on a circular platform rotating opposite of a person standing on the edge?

physics

a ball moves with a constant speed of 4 m/s around a circle of radius 0.25 m. what is the period of the motion?

physics

A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero

physics

How high must a 2.0-kg basketball be thrown so that the top of its arc, it has a potential energy of 160 J?

PHYSICS!!!

By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

physics

how much work is being done if a 100 N box is lifted 3 meters off the ground???

Physics

If a clock says 10:30 am and the second hand rotates 960 degrees what time would it be?

physics

the period of revolution of a satellite is 90 min. Find the radius of the orbit assuming an acceleration of 9.8 m/s/s.

physics

Describe how the energy from a rotating flywheel can be transferred to moving parts of a child's toy.

physics

explain examples of physical laws used during the Apollo 13 mission to get it home

physics

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?

physics

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?

Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?

Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?

physics

How can I calculate exactly where a marble will drop if it is rolling of a table with very little friction??

physics

the frequency of yellow lights is 5.00 x 10^14 Hz. if it travels through space (where v= 3.00 x 10^8m/s) find the wavelength of this light.

physics

if a man weighing 80 kg falls from 20000 feet , what would be his weght when he hits the ground?

physics

a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice

Physics 112

Two point charges, +3.18 µC and -6.40 µC, are separated by 1.32 m. What is the electric potential midway between them?

science (physics)

thank you for your help! my question is :how do you find the magnitude of the electric field that will balance the weight of an electron?

physics

A 7.9 kg object undergoes an acceleration of 2 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N.

physics

a student does 314 J of work in moving a desk 2.1 m. What was the magnitude of the applied horizontal force?

Physics

how fast must a roller coaster be going to get around a vertical loop with a radius of 15 m

physics

Work out the gravitational potential energy of a 2kg brick at a height of 9 metres.

physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.1 µC?

physics

Approximate the gravitational force of attraction between a 49.0 kg girl and a 52.0 kg boy if they are sitting 2.5 m apart

physics

Why does cross sectional area of a liquid stream reduces while falling vertically??

physics

a nurse counts 76 beats in one minute. what are the period and frequency of the hearts oscillations?

physics

A ball tossed upward reaches a maximum height of 3.0m. Show that its initial speed was 7.7m/s.

Physics

A car travels in a straight line for 5.4 h at a constant speed of 79 km/h . What is its acceleration? Answer in units of m/s2.

Physics

How many calories of heat will a person lose by evaporating 1250g of water and perspiration in a day?

Physics

How far does a point on the circumference travel if the wheel is rotated through an angle of 28.6 rads?

physics

Help me please to Find the tension in the two wires that supoort the light fixture. M=13 kg, è=43 degrees???!!

physics

determine the speed of a mass (1.00kg) after it has fallen a vertical distance of 12.5 meters

Physics

What is the time lapse between seeing the lightning strick and hearing the thunder 17 km away

physics

what is the frequncy per minute of a skater making rounds at rink with radius of 2.5 m of her speed is 5 km/hr?

Physics

Calculate the speed of an 7.8×104 kg airliner with a kinetic energy of 1.0 × 109 J. Answer in units of m/s.

Physics

How much work must be done to accelerate an 8x105 kg train: a) from 10 m/s to 15 m/s; b) from 15 m/s to 20 m/s; c) to a stop an initial speed of 20 m/s?

Physics

When calculating delta Tsample,why is th initial temperature taken to be 100 degrees Celsius

Physics

A 1300 kg sports car accelerates from rest to 85 km/h in 6.2 s. What is the average power delivered by the engine?

Physics

Calculate the distance (in km)that Larry runs if he maintains an average speed of 8km/hr for 45 minutes.

physics

how much should a ramp rise over 10 meters of run for an angle of 12 degrees

physics

5. What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.

physics

What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.

physics

How far will a car moving at 50 miles an hour travel in the time it takes to sneeze?

physics

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

Physics

Will a cyclist coast farther if the lamp connected to his generator is turned off? Explain.

Physics

Given that q = +17 mu C and d = 14 cm, find the magnitude of the net electrostatic force exerted on the point charge q2.

physics

Forces of 3 N and 4 N act the right angles on a block of mass 5 kg. Show that the resulting acceleration is 1 m/s².

physics

what is the wavelength of radar waves with the frequency of 6.0*10^10Hz? a. 0.0010m b.0.010m c.0.050m d.0.0050m

Physics

explain the concept of electric potential difference in terms of work done in transferring the charge

Physics

explain the concept of electric potential difference in terms of work done in transferring the charge

physics

what potential difference delta V is required to accelerate protons from the rest to 10% of the speed of light?

physics

Find the rms speed of H2O molecules in atmospheric water vapor at a temperature of 13.2° C.

physics

Evaluate the Rydberg constant R using Bohr theory and show that its value is R = 1.0974x10-1.

physics

the density of a block of wood with a colume of 50 cubic centimeters and a mass of 10o grams is

physics

How much charge flows through a 12 V battery when a 2 ìC capacitor is connected across its terminal?

physics

If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3s, what average power is generated

physics

What is the mass of a lead sinker witha volume of 3cm3? please show work Thank you

physics

What is the net force on a rock that weighs 500N if the weight of the water it displaces is 300N?

physics

Find the minimum kinetic energy needed for a 3.7×104-kg rocket to escape the Moon.

physics

claculate the force of gravity between two identical balls 8kg each, if they are 5m apart?

physics

claculate the force of gravity between two identical balls 8kg each, if they are 5m apart?

physics

what is the value of electric field intesity at a point between two co centric sphere

physics

what is the magnitude and direction of the electric field 20.0 cm cm directly above an isolated 33.0 10 neg6 c charge?

Physics

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).

Physics

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).

Physics

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).

Physics

How many moles are there in a 30 cm diameter basketball at a pressure of 160 kpa and temperature of 25 degree celcius.

physics

an iron bar measures 11 cm x 7 cm x 5 cm it is melted down to make a cylinder height of 9 cm what is its radius

Physics

Does the period of a satellite in a circular orbit increase or decrease as its distance from earth increases? Thanks :)

physics

the value of acceleration due to gravity is not equal to 10m,give reasons to support

Physics

A player kicks a footbal with a velocity of 27 m/s at an angle of 31° with the ground. How high does the ball travel?

Science

Name 3 physical (physics) occurances that happen within a roller coaster ride?

physics

find the mass of the moon if its radius is 1.76*1000000 m and the average density is 4*1000kg/m cube

physics

state the energy hans-formation which occurs when a car is brought to rest by its break

physics

Consider the relation w=2 q t^2/m^3. How would w change if m wre increased by a factor of 2? Thank you very much...

Physics

To move 8.0 of charge from one electrode to the other, a 12- battery must do how much work?

physics

What is force of attraction between two students of mass 20kg,10meters apart?

physics

What is force of attraction between two students of mass 20kg,10meters apart?

physics

How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?

physics

How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?

Physics

If a 70g swimmer pushes off a pool wall with a force of250n, what is her acceleration?

Physics

An object rotates at 3.0 rpm(revloutions per minute). What is the magnitude of its angular velocity?

physics

a spring has a force constant of 20000 N/m how far must it be strectched for its potential energy to be 43 J??

Physics

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

Physics

A spherical piece of metal has a radius of .250m and a mass of 503 kg. what is its specific gravity?

Physics

Does the composition of an object affect the final temperature of in objects. This is in terms of thermal equilibrium.

physics

A 5.0 m diameter merry-go-round is initially turning with a 4.6 s period. What is the speed of a child on the rim?

physics

A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t=1 0.0s. How far did it move between t=2.0s and t=6.0s?

physics

if a bowling ball with a 22 cm diameter is half way submerged in a bucket of water, what is its mass?

physics

what causes an object to experience an artificial gravitational acceleration in a rotating space station

physics

Is the mass of an object has an effect velocity with it land on the ground when freely falling from rest?

physics

find the bouyant force on a copper obect that displaces 2.8 meters cubed of water

physics

find the acceleration of a 3 kg mass as it moves with a constant speed of 4 m/s along a circle of radius 2 m.

physics

A car moves at a constant speed of 24m/s. How long (in minutes) will it take to travel 15.0 km?

physics

A car and a motorbike both are running at the same speed. Which of the two has greater momentum and why?

physics

A car starts from rest and accelerates for 6.1 s with an acceleration of 3.1 m/s2. How far does it travel? Answer in units of m.

physics

Resultant displacement from 12m east to5m north to9m vertically upward

PHYSICS

A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.

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