# Math/Physics

206,551 results, page 40

### physics

in joule thomson effect,why the temperature of inversion leads to negative sign?

### physics

How much work must be done to stop a 1200 kg car traveling at 135 km/h?

### physics

How much work must be done to stop a 1150-kg car traveling at 145 km/h?

### physics

which is more work pushing with 115N over 15 m or lifting 20N 10meters

### physics 101

A 72.9 kg man is standing on a frictionless ice surface when he throws a 1.6 kg book at 11 m/s.

### Physics

If you are wearing a watch, what energy changes are taking place in it right now?

### physics

Determine the net force necessary to give an object with a mass of 1.8 kg an acceleration of 5.7 m/s2.

### Physics

A projectile is shot straight up from the earth's surface at a speed of 1.20×104 KM/HR. How high does it go?

### Physics

A projectile is shot straight up from the earth's surface at a speed of 1.20×104 km/hr. How high does it go?

### physics

if a current of 4900A is applied to a copper wire what might happen to it? does it burn or what?

### physics

if an object has a mass of 615grams and a volume of 150cm3 is the density 5.86g/cm3

### Physics

What weight of water is required to fill a 80 gallon aquarium? The answer must be in kN

### physics

How center mass affects an arrows distance traveled (include source)

### physics

A fisherman's scale stretches 3.5 cm when a 2.1 kg fish hangs from it. What is the spring stiffness constant?

### PHYSICS RELLY QUICK QUESTION

is air resistnace negaitve because it opposes the motion?

### College physics

To what temperature will 7700 J of heat raise 3.0 kg of water that is initially at 10.0 degrees C?

### Physics

calculate the force between two identical charges of 1.0 x 10 exp -9 C separated by 1.0 Cm

### Physics

what is magnitude of the centripetal if the tangential speed of the car is 2.0m/s and the radius of the wheel is 83m

### physics

What is the resistance of a 40 watt light bulb if it is it to full brilliance by a current of .33amps?

### Physics

What term describes a force that causes an object to move in a circular path?

### physics

what is the relationship between independent and dependent variables in the experiment of snell's law

### physics

calculate the total area of the walls of a room 5m long 4m wide and 2.5m high

### Physics

How do you calculate error analysis? For example; 200 +- 5% Please explain if possible

### physics

If 30 N of force is exerted over an area of 20 m2, how much pressure is being applied?

### Physics

Wavw velocity is inversely proportional to what? (a) period (b) wavelength (c) amplitude (d) All of these

### college physics

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

### AP Physics

A bicyclist pedaled at 10 m/s (meters per second) in 20 seconds. What distance was traveled?

### physics

does flux depends on electric field or just the enclosed charges only

### physics

Explain the conditions where the assumption of total mechanical energy of a system is conserved.

### physics

if a plane is flying 235 km/h and encounters west wind at 80 km/hr. What's its new velocity?

### physics

If 30 N of force is exerted over an area of 20 m2, how much pressure is being applied?

### Physics

at what velocity would a snowball melt before it hit the wall at 32 degrees?

### physics

A truck covers 40.0 m in 7.00 s while smoothly slowing down to a final velocity of 2.45 m/s.

### Physics

What does the value of the gradient of the graph (lg (g-field strength) against lg r(distance)) represent?

### physics

Determine the net force necessary to give an object with a mass of 2.1 kg an acceleration of 3.5 m/s2.

### college physics (bob again

would 2.68 meters be a reasonable height for the cliff?

### physics

what happens to the speed of an airplane with a 25 km/h tailwind pushing ahead from tail to front?

### physics- urgent

determine the estimated uncertainty for the area of circle with a radius of 10.45+-0.5cm

### physics

if a motorcycle accelerates from rest through the 400 m in 10 sec flat. What is its acceleration?

### physics

What is the acceleration of a vehicle that changes its velocity from 120 km/h to a dead stop in 7 s? Answer in km/h·s

### physics

A stone is thrown vertically upward with a speed of 14.0 m/s from the edge of a cliff 89.0 m high

### Physics

The sun has a raduis of 6.96*10^8m and a surface temperature of 5780K. How much power is radiating?

### physics

Can an adult male be rescued from a fall by tying a rope to a car's axle?

### physics

The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2.

### Physics

what do you call the source of an intense narrow beam of coherent monochromatic light?

### physics

3. A 5 N block slides down a 20° incline at constant speed. What is the frictional force?

### physics

3. A 5 N block slides down a 20° incline at constant speed. What is the frictional force?

### Physics

In what distance can a 25 gram bullet traveling at 250m/s be stopped by force of 5000N?

### physics

as a ball moves upwards in the air, by how much does its speed decrease each second?

### physics

as a ball moves upwards in the air, by how much does its speed decrease each second?

### physics

find the ratio of the intensities of two sounds if one is 8 dB louder than the other

### physics

How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.80 m/s^2?

### physics

How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.80 m/s^2?

### physics

spring has k=82 N/m use a graph to determine the work needed to stretch it from x= 3.8 cm to x=6.2 cm where x is the displacement

### Physics

What is the instantaneous speed in m/s at the 10 s mark for a car that accelerates at 3 m/s(squared) from a position of rest?

### physics

a satelitee breaks in half while in circular orbit about the earth

### physics

A car can go from 0 to 85 km/h in 10 s. If the engine delivered twice the power, how many seconds would it take?

### physics

A car accelerates from rest at 7.9 m/s2. How much time does it need to attain a speed of 5 m/s?

### Physics

How much heat is gained or lost when 200 grams of ice melts?

### physics

what force is required to make an object of mass 500g accelerate at 4m/s2 (sqaured) ?

### Physics

How many electrons in an atom can have each of the following quantum number or sublevel designations? 1. n=4, l=3

### physics.

an object travels 219 meters with acceleration 6.43 m/s^2 over an interval of 2.86 seconds. What are Vi and Vf.

### physics

If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time?

### Physics

How many calories of heat are gained to turn 10 grams of ice at 0 C into water at 0 C?

### physics

a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object

### physics

find the magnitude and direction of a combination of 48N east and 14N north.

### physics

A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?

### physics

Under what conditions will the projectile have the greatest velocity when it hits the ground?

### Physics

How much work is required to stop an electron (m = 9.11*10^-31 kg) which is moving with a speed of 1.50×106 m/s?

### physics

A constant 6.0N net force acts for 4.0 s on a 12 kg object. what is the objects change of velocity

### Physics Help!!!

With the energy needed to warm up some amount of water from 26°C to 44°C, how high could you lift it?

### physics

a free body diagram of a boy sliding down a hill on a sled

### Physics

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

### physics

a 27,000kb freight train starting at 12m/s then speeds up to 45 m/s in 35 seconds. what is the acceleration?

### Physics

How much work must be done to stop a 970 kg car traveling at 115 km/h?

### physics

if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed

### physics

if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed

### Physics

Question contains pictures: h t t p : / / g o o . g l / M H k y 1 (delete the spaces between the characters for the URL)

### physics

What is the acceleration of a 23 kg pail of cement that is pulled upward (not sideways!) with a force of 300 N?

### physics

How much work must be done to stop a 1040 kg car traveling at 111 km/h?

### Physics

A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make?

### physics

A pendulum is 1.0 m long and is drawn aside 30.0* and let go. Find the velocity at the lowest point.

### Physics

Write each number in scientific notation: 1) 15.01 ans. Is it 15.01 x 10 minus to the power of 2?? Am i wrong?

### physics

An RC car has a power rating of 12 W and a mass of 1.0 kg. How long would it take to reach 5 m/s ? thanks.

### Physics

Calculate the hang time of an athlete who jumps a vertical distance of 0.75 meter.

### physics

An object accelerates uniformly from rest at a rate of 2 m/s2 for 3 s and then 5 m/s2 for 15 s. Find its final velocity?

### physics

What force is needed to accelerate a child on a sled with the total mass of 43kg at 1.5m/s

### physics

What would be the resulting acceleration if a 7.0 kg shot put was launched with a force of 140 N?

### physics

If you throw a cigarette out a car window that is moving at 10 mph where will it land

### physics

If you throw a cigarette out a car window that is moving at 10 mph where will it land

### Physics

An automobile driver puts on the brakes and decelerates from 30.0 m/s to 0 in 10.0 s. What distance does the car travel?

### physics

two identical objects move with speeds of 5.0 m s and 25.0 m s. What is the ratio of their kinetic energies?

### physics

what happens to the force of frictionif the coefficient of friction was reduced by one thrid

### Physics

What is the volume of 3.25 moles of a gas at a temperature of 115 K and a pressure of 275 kPa?

### Physics

During the pre-industrial era, what were the Carbon Dioxide levels like?

### Physics

What is the amount of CO2 added to the earth's atmosphere each year from fossil fuels?

### physics

Why does a 10 gram bullet have more momentum traveling at 200m/s than at 20m/s?

### physics

the rate at which position changes with time is called acceleration. true or false?

### physics

the rate at which position changes with time is called acceleration. true or false?