Math/Physics

207,240 results, page 49

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.

physics

A car starts from rest and accelerates for 2.8 s with an acceleration of 2.1 m/s2. How far does it travel? Answer in units of m

physics

the two crates 40-kg and 60-kg are to be accelerated upward to a ship at the rate of 0.30-m/s2 determine the tension in each rope ?

physics

a container has a height of 50 cm and a width of 20 cm and a depth of 15 cm. if you stack three on top of each other, how tall will it be?

physics

calculate the work done in lifting a 300N weight to a height of 10 m with an acceleration 0.5m/second square.

physics

calculate the work done in lifting a 300N weight to a height of 10m with an acceleration 0.5 m/s square.

Physics

A dog is running at 9.1 m/s for 7.8 km. How long did it take him to arrive at his destination? (Give answer in seconds)

physics! please help!

A car accelerates from rest at 4.9 m/s2. How much time does it need to attain a speed of 6 m/s?

Physics

A car initially moving at 15 m/s accelerates at 4.5 m/s2 over a distance of 10 m. Find the final velocity?

physics

Calculate the amount work done on 60 N of force is used to move an object a distance of 4.0 meters

physics

A stone is thrown vertically upward with a speed of 22.0 m/s. How fast is it moving when it reaches a height of 12.0 m?

physics

A jet travels at 490 m/s. How long does it take to travel 227m? Answer in units of s

physics

A car travels in a straight line for 4.9 h at a constant speed of 73 km/h . What is its acceleration? Answer in units of m/s2

Physics

A dog is running at 3.0 m/s for 3.6 km. How long did it take him to arrive at his destination? (Give answer in seconds)

physics

A car travels in a straight line for 5 h at a constant speed of 73 km/h . What is its acceleration? Answer in units of m/s2

Physics

How high will a 1.60-{\rm kg} rock go if thrown straight up by someone who does 75.0 J of work on it? Neglect air resistance.

physics

a football is kicke with a velocity of 20 m/s at an angle of 40 degrees with the ground. Find the components. Key: 4 m/s = 1 cm

physics

If a race car completes a 2.8 mi oval track in 41 s, what is its average speed? Answer in units of mi/h

physics

A particle at rest undergoes an acceleration of 2.9 m/s2 to the right and 2.6 m/s2 up. What is its speed after 5.3 s? Answer in units of m/s

physics

what maximum height will a 311.2 m drive reach if it is launched at an angle of 17.0 degrees to the ground

physics

A car starts from rest and accelerates for 6.5 s with an acceleration of 3.6 m/s2. How far does it travel? Answer in units of m

physics

How do we compensate for thermal expansion /contraction in the construction of metal pipes for carrying steam?

physics

Name Two solid materials having very low linear expansivity ?

physics

A liquid expands on heating. Explain briefly how its density will change with rise in temperature

physics

Name Two solid materials having very low linear expansivity ?

physics

A liquid expands on heating. Explain briefly how its density will change with rise in temperature

physics

a rock was thrown at the height of 50.0 m above the ground with an initial velocity of 20.0 m/s straight upward.

physics

A women walks 2m in the direction 60degrees north of east. find her final displacement.

physics

A women walks 2m in the direction 60degrees north of east. find her final displacement.

physics

A car starts from rest and accelerates for 6.7 s with an acceleration of 1.6 m/s2 . How far does it travel? Answer in units of m

Physics

From the position vs time graph of an object moving with constant acceleration, how could you find the velocity

physics

A ball is thrown straight up with an intial velocity of 85 ft/s. At what times will it have a height of 200 ft?

physics

A 8.2 kg object undergoes an acceleration of 2.5 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N

Physics

What is the acceleration experienced by the tip of the 1.5 cm-long sweep second hand on your wrist watch?

physics

A 3.00 kg rock is dropped from a bridge and strikes the water below with a velocity of 40.0 m/s. What is the momentum at impact?

physics

How far (in meters) must a 800 kg pile driver fall, if it is to do 18000 J of work?

physics

How much work in joules must be done to stop a 5000 kg car traveling at 120 km/hr?

PHYSICS HELP

what is the minimum amount of energy required to accelerate horizontally a 3.0g bullet from rest to a speed of 40.0 m/s?

Physics

A woman drops a basketball, how far does it fall in one second? use formulas

physics

what is the power of a 6 ohm bulb when 3 of such bulbs ar econnected in a 12 volt parallel circuit?

Physics

What is the resonant frequency in an RLC circuit if R=5 , C=6, and L=12 mH, and V-115 V? (a) 593 (b) 41,400 (c) 1560 (d) 1793

physics

What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.

physics

A drag racer accelerated from 0 to 475km/h in 4.88 s. Assuming a constant acceleration, how far did it travel?

physics

A 8.20 cm tall object is placed 30.0 cm in front of a concave mirror with a focal length of 4.20 cm. What is the magnification?

physics.pls help

A 100g bird siis in its nest. what is the Fnet(net force) in this case?

Physics

What is the speed of a transverse wave in a rope of length 1.50 m and mass 69.0 g under a tension of 500 N?

Physics

A car slows to a stop over a certain distance. What could cause the stopping force to be greater?

Physics

What exerts the force obn a rocket in outer space to make it move forward?

physics

What is the acceleration experienced by the tip of the 1.5 cm long sweep second hand on your wrist watch

physics

a car accelerates along a straight road from the rest to 90 km/h in 5 s what is the magnitude of its average acceleration

Physics

Air in a balloon does 25 J of work while absorbing 81 J of heat. What is the change in internal energy?

physics

how long does a car with an acceleration of 2.0 m/s^2 take to go from 10m/s to 30m/s?and show the solution how do you get the answer.

physics

A 2.40- bullet embeds itself in a 1.20- block, which is attached to a spring of force constant 770 .

physics

A family drives 400 milles in 8 hours. Explain how the acceleration of their car changed?

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