# 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 .