Math/Physics
214,413 results, page 62

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? 
physicsmagnetism
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 240Ώ filament of a bulb connected to a 120V 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? 
jruphysics
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 196mhigh 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 196mhigh 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 sealevel 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 = 5.0 103 m3 and V2 = 20.0 103 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/s0/1.2s 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 030 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 onehalf 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 × 108 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 × 108 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 
Physics, Help!! URGENT!!!
A sprinter must average 24.0 mi/h to win a 100m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg? 
physics
A meteoroid is speeding through the atmosphere, traveling east at 15.5 km/s while descending at a rate of 10.6 km/s. What is its speed, in km/s? 
physics
An 80 kg skateboarder going 10 m / s is launched nearly vertically off a ramp as shown. Approximately how high does he go?