# Physics!

73,661 results, page 57

### Conceptual Physics

How do you calculate the time traveled while traveling 25 knots? It needs to be converted into km/hr.

### Physics

Calculate the total energy of 4.0 kg object moving horizontally at 20 m/s 50 meters above the surface. Please help me!!!!!

### physics

Every few hundred years most of the planets line up on the same side of the Sun

### physics

how much power require to pull the water from horizontal distance about 100 feet ?

### Physics - Magnetism

The direction of magnetic lines of force change if an iron piece is placed in its field. Why?

### physics-magnetism

The direction of magnetic lines of force change if an iron piece is placed in its field. Why?

### physics

if a skydiver with a surface area of 2m sq falls at a steady speed of 55m/s with a force of 900N what is the pressure on her?

### Physics

Calculate the current in the 240-Ώ filament of a bulb connected to a 120-V line. Power = IV

### physics

What is the repulsive force between two pith balls that are 12.0 cm apart and have equal charges of -39.0 nC?

### jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm?

### physics

A car travels in a straight line for 4h at a constant spped 73km/h. What is its acceleration? Answer in units m/s^2

### physics

A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?

### physics

A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?

### physics

A copper wire has a diameter of 1.532 mm. What magnitude current flows when the drift velocity is 0.500 mm/s?

### Physics

What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N

### physics

the earth is approximately sphere of radius 6.37*10^6 meter.what is its surface area in square km? what is its volume in cubic km?

### Physics 102

What would be the path of the Moon if somehow all gravitational forces on it vanished to zero?

### Physics

The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye

### physics

a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?

### english

is ap physics very challenging and difficult because i need to know if im going to be able to go through t next term

### physics

You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?

### Quantum Physics

What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))?

### Physics

An automobile is traveling 65mph. Its brakes decelerates at 6.0mps. How long will it takes to stop the car?

### Physics

Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.

### Physics

Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.

### PHYSICS

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?

### Physics

An object 6.70 cm high is placed 15.1 cm in front of a convex mirror with radius of curvature of 8.55 cm. Where is the image formed?

### Physics

Where does it takes less time to boil eggs: in a pan of boiling water or in a pressure cooker?

### Physics

Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?

### Physics

Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?

### Physics (fix)

In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can?

### physics

Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where V1 = 5.0 10-3 m3 and V2 = 20.0 10-3 m3.

### Physics Classical Mechanics

Hi Enjoy, Thanks. I got the acceleration right and the Force wrong. Need help on Question 2.

### Physics

Two organ pipes are imitating a sound of 12 Hz, one of them is 12 m long. What is the length of the other pipe?

### Physics 221

How much charge flows through a 12 –V battery when a 2.0 mF capacitor is connected across its terminals?

### physics

Under what circumstances does a double convex lens produce an image that is reversed left to right?

### physics

Suppore the ceiling in the previous problem is that of an elevator which is going up with an acceleration of 2.0 m/s square. Find the elongations.

### physics

list three factors that we must always give when exprassing a force vector quantity

### physics

How much force is needed to accelerate a 125 kg block up a 35 degree include at 3.4 m/s2 if the coefficient of friction is 0.28?

### physics

is this right?if 5.0m/s^2=6.0m/s-0/1.2s a=fn/m 5.0m/s=15.0N/3kg show that the 5.0m/s^2 acceleration can result from a net force of 15N exerted on a 3.ok cart

### Physics

Two spheres with masses of 5.00 g and 10. kg respectively are .500 m apart. calculate the force of attraction between them.

### Physics

If the period of the moon were 31 days while its orbit radius 3.8x10^8m, what would the mass of the Earth be?

### PHYSICS

A girl rows 10 km downstream in 2 h. Her return trip takes 4 h. How fast can she row in still water. in km/h?

### Physics

Find the uniform acceleration that causes's a car's velocity to change from 39.7 m/s to 74.0 m/s in an 5 second period of time.

### Physics

A 1250 kg car travelling at 60.0 km/h comes to a sudden stop in 35 m. What is the coefficient of friction acting on the brakes?

### Physics

A satellite that is 4175 miles from the center of the earth, orbits with a period of 90 minutes. What is its centripetal acceleration?

### physics

If a cart is initially travelling at 3.5 m/s, and has a mass of 200g, what is it's kinetic energy (LEAVE OUT units of J)?

### physics

What is the momentum of the 200 g cart BEFORE the collision (LEAVE OUT units of kgm/s)? please help.

### physics

Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume? please help

### Physics

What capacitance in needed in series with an 785 µH inductor to form a circuit that radiates a wavelength of 199 m?

### Help!! Physics

What capacitance in needed in series with an 785 µH inductor to form a circuit that radiates a wavelength of 199 m?

### physics

a 1000 kg sports car accelerates from 0-30 m/s in 5.0 s. What is tge average power delivered by the automobile engine?

### physics

show that the acceleration is 7.5 m/s² for a ball that starts from rest and rolls down a ramp and gains a speed of 30 m/s in 4s

### physics

Is there a way to calculate the moment of inertia of a hanging mass (3.1 kg) without length & width dimensions?

### physics

Show that the acceleration is 7.5 m/s2 for a ball that starts from rest and rolls down a ramp and gains a speed of 30 m/s in 4 s

### Physics

An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?

### Physics

An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?

### Physics/ Chem

Find the entropy change when 51g of steam condenses to water at 100 ∘C.

### physics

Why electric dipole moment between two charges points from negative to positive charge.

### Physics

If a car engine has a power,P. Write an expression for the time it will take to accelerate from w to 4w. Note that P=wt where t is torque.

### physics

if 20g of steam at 100 c is mixed into 80 g of water at 20 c what is the final temperature if no heat lost

### physics

What is the total internal kinetic energy of 16.2 moles of a monatomic ideal gas at a temperature of 279 K? KE =

### physics

A proton is suspended at rest in a uniform field E.Take into account gravity and determine E.

### physics

what is the heat required to convert 0.1 kg of melting ice into steam at 100 degree celcius

### Physics questoin

A satellite has an orbital radius of 3.74x10^7 m. If it has a period of 49776 seconds, what is the mass of the planet?

### physics

two forces of magnitude 8N making an angle of 30 and 120 with +xaxis . FInd the y component of reultant

### PHYSICS

two forces of magnitude 8N making an angle of 30 and 120 with xaxis . the y component of resultant A/ O B/ 4N C/ 8N D/ 16N

### Physics HELP ME PLEASE

A 1250 kg car increases it's speed from 11 m/s to 27 m/s in 5.4 s. - What is the cars acceleration? - How much force is required?

### Physics

Which of the following is an appropriate measure of electric power on a toaster label? A. 110 V B. 2.0 A C. 220 W D. 55 Ω

### Physics

Calculate the tension in the cable connecting the two masses. Assume all surfaces are frictionless.

### PHYSICS

'if diametre of earth is reduced to half mass remains constant what is then duration of day and night'

### Physics

A person with a mass of 55kg climbs a tower with a height of 11m in 25 minutes. What power is produced?

### physics

Find the total displacement of a body in 8seconds starting from rest with an acceleration of 2cm/sec2

### Physics

all electric field lines start on positive charges. explain why this makes sense.

### physics

Why does a conductor carrying current experiences force when held in a magnetic field at right angles to it?

### physics

Written in scientific notation, with three significant digits, the number 0.01050 is_______?______ x 10?

### science (physics)

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path

### science (physics)

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path

### physics

An astronaut in a spaceship is listening to his music. Calculate the time it takes to play a 4.00 minute song at 0.1c

### college physics

Calculate the angular speed of the moon if it makes a revolution around the earth in 27.3 days?

### PHYSICS

a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity?

### physics

according to the statement given what is the magnitude of the velocity of the rock just before it strikes the ground

### physics

Liquids exert pressure at Right Angles to the surface of container.Please explain this with an example

### Physics

What is the gravitational force between a proton and an electron in a hydrogen atom if they are separated by distance of 5.29x10^-9 cm.

### Physics

What is the gravitational force between a proton and an electron in a hydrogen atom if they are separated by a distance of 5.29x10^-9 cm

### physics

What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04m ?

### physics

Calculate the distance you will travel if you maintain an average speed of 12km/h for one-half hour.

### Physics

A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m?

### college physics

Show that the motion of a particle in a central force field is always confined to a plane.

### physics

A current of 1 A is maintained in a simple circuit with a total resistance of 2.5 Ω. How much heat is generated in 4.0 s?

### physics

The resistivity of silver is 1.59 × 10-8 Ω·m. What is the resistance of a section of 12 gauge wire (diameter 0.2057 cm) that is 8.60 m long?

### physics

The resistivity of silver is 1.59 × 10-8 Ω·m. What is the resistance of a section of 12 gauge wire (diameter 0.2057 cm) that is 8.60 m long?

### physics

A square conducting slab with 7 m sides carries a net charge of 89 mu or micro CC. what is the electric field?

### physics

the angle between two forces of 32 AND (neutrons) and 47 N is 36 degrees. Find the magnitude of the resultant force

### Physics

Find the pressure exerted by a waterbed with dimensions of 2 m x 2 m which is 30 cm thick. (hint: use density of water)

### Physics

A proton with a kinetic energy of 4.7×10−16J moves perpendicular to a magnetic field of 0.25T .

### physics

If one walks straight up a 10 degree incline, what is the height achieved after walking 10 kilometers ?

### physics

If a 1500 kg car stopped from an in 5.6 seconds with an applied force of 5000 N, how fast was it initially traveling?

### physics

Find the total force necessary to give a rocket of mass 25,000 slugs an acceleration of 28.0 ft/s2.

### Physics help please

Calculate the allowed wavelengths for the emission of a photon initially in the n=3 state in a hydrogen atom