# physics please HELP !

74,851 results, page 62-
## physics

what is the kinetic energy of a 3 kg 20 cm diameter bowling ball with a linear velocity of 4m/s? (rolling and spinning) -
## physics

A 1.5 volt battery will increase the potential energy of ________________ coulombs of charge by 0.18 joules. -
## physics

How much potential energy does DeAnna with a mass 57.0 kg, gain when he climbs a gymnasium rope a distance of 3.7 m? -
## physics

If a car is traveling westward with a constant velocity of 20 m/s, what is the net external force acting on it? -
## physics

My teacher needs us to formulate a question for the science fair. Till now, we have only learned the Kinematics equations, HELP, please.... -
## Physics-VECTORS

Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =? -
## Physics

How Fast would a satellite have to move to stay in an orbit 300 miles above the Earths surface? -
## physics

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends? -
## physicS

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends? -
## Physics

i have to build a enery effiecient vehicle for class and do a opapp paper and i need help im so confused.... any ideas? -
## 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

what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m? -
## Physics

What is the de Broglie wavelength of an electron that strikes the back of the face of a TV screen at 1/9 the speed of light? -
## physics

i want a simple laboratory method of determining a young modulus of a long thine wire -
## Physics

What is the gravitational force between the proton (1.67X10^-27 kg) and the electron (9.11X 10^-31 kg) in a hydrogen atom if they are 3.00X10^-10 m apart? -
## 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

Inside a metal conductor, why is it not possible to have a static charge configuration if there is a net electric field? -
## physics URGENT

3. Using conceptual meaning of g = Fg/m [N/kg], answer the following: a) What does the spring scale read on the surface of the Moon? -
## physics

state the energy hans-formation which occurs when a car is brought to rest by its break -
## GENERAL PHYSICS

Two long, parallel wires separated by 90 each carry currents of 2.0 in a horizontal direction. -
## physics

If wind blows at 44 m/s over a house, what is the net force on the roof if its area is 180 m^2 and is flat? -
## physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace? -
## PHYSICS!!!

By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6? -
## physics

How much heat is needed to convert 1.0kg ice at -5celsius to steam at 105 celsius? -
## 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? -
## Physics

If the change in position Dx is related to velocity v (with units of m/s) in the equation Dx = Av, the constant A has which dimension? a. m/s^2 b. m c. s d. m^2 I chose b? -
## physics

if a car moving 180km/h reduces to 72km, what is the percentage change in kinetic energy? -
## physics

What is the longest wavelength for a standing wave, in the same length tube, that is open at one end and closed at the other? -
## Physics

A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s. -
## Physics

1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain -
## Physics

How much force is needed to hold a nearly weightless but rigid 1-L carton beneath the surface of water? -
## physics

calculate the friction force of an object? if weight=19600,vi=30ms-1,vf=0ms-1 and S=100m. -
## 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

How can you easily increase the magnetic field strength inside a current-carrying coil? -
## Physics

How does the idea of magnetic fields arising from circulating currents relate to permanent magnets? -
## physcal science/physics

what is the kinetic energy in joules of a 1000 kg car travelling at 90km/h -
## physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace? -
## physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace? -
## physics

An argon atom has a mass of 6.64 x 10 kg has 5.5x108 joules of kinetic energy. At What velocity is it moving? -
## Physics

What is the frictional force between the tires of a 2000 kg car and an asphalt road if the coefficient of friction is 1.2? -
## Physics

A train can deccerate at 0.4 m/s. It's traveling at 160km/hr. How far in advance should it apply brakes to come to a full stop. -
## Physics

A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s? -
## physics

Find the minimum kinetic energy needed for a 3.7×104-kg rocket to escape the Moon. -
## physics

What is the frequency of the EM wave emitted most strongly by a glowing element on a stove with temperature 1,500 K -
## AP Physics

What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction? -
## Physics

How much time does it take for a car to come to rest if it has an initial speed of 22m/s and slows with a deceleration of 6.1 m/s^2 Will my answer be 3.6 m/s^2 -
## Physics

How much time does it take for a car to come to rest if it has an initial speed of 22m/s and slows with a deceleration of 6.1 m/s^2 Will my answer be 3.6 m/s^2 -
## physics

a term is related as at=bt2 + ct3 +d,if 'a' has dimension of power,find the dimention of 'b','c' and 'd'......'t' is the time -
## physics

What is the force required to move a 22kg ccrate up an incline of 35 degrees, if the coefficient between the two surfaces is .30? -
## physics

How does one go about solving this? A skateboard rider starts from rest and accelerates at a constant +.50 m/s^2 for 8.4s. What is the riders displacement? -
## physics

on a planet whose mass is twice that of earth and whose radius is same, with what acceleration will a body fall at sea level? -
## physics

A car comes to rest uniform deceleration at the rate of 5.8 m/s2 for 14.3 seconds. What is distance did it travel during this time?? -
## physics

WHAT IS THE REASON BEHIND THE JISKHA"S TEACHERS TO BE NOTHING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(except Writeacher and STEVE) ARE THEY DAFT OR NUISANCE!!!!!!!!!!!!!!!!!! ANSWWER Me QUICKLY !!!!!!!!!!!!! -
## physics

Doubling the frequency of a wave source doubles the speed of the waves. ( True or False) -
## physics

Two objects attract each other gravitationally with a force of when they are 0.25 m apart. Their total mass is 4.00 kg. Find their individual masses -
## physics

A body immersed in liquid has an upthrust of 140N with a density of 12kg calculate the velocity -
## physics

What is the magnification of a 4 cm tall object placed 40 cm from a concave mirror having a focal length of 10 cm? Choose one answer. a. 0.33 b. -0.33 c. 1.33 d. -1.33 -
## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? -
## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? -
## Physics

what is the correct equation to use to find the velocity of the center of mass of a cylinder after it rolls down a hill -
## physics

a 5kg suitcase slides 2m down a frictionless ramp incline at 45 degress. How fast is it going at the bottom? -
## physics

suppose a ball thrown downward with initial velocity 3 m/s instead of being dropped a)what then would be its position after 1s and 2s ? b)what would its speed be after 1 s and 2 s ? -
## physics

the mathematical form of the thin-lens equation predicts that a graph of 1/p vs 1/q should have a slope of -1, explain? -
## Intro to Physics

With scanning probe microscopy technology, we see not actual atoms but rather images of them. Explain. -
## Physics

What is the maximum circular speed the astronaut can have before he breaks free of gravity and goes drifting off into space? -
## Physics

What is the gravitational force between two identical 4,500 kg asteroids whose centers of mass are separated by 120 m? -
## physics

A commuter backs her car out of her garage with an acceleration of 1.6 m/s2. How long does it take her to reach a speed of 2.3 m/s in seconds -
## Physics

A stone is thrown vertically upward with a speed of 19.0m/s How fast is it moving when it reaches a height of 10.0m -
## physics

what is meant by the change go temperature of 1 degree celcius on the scale of a plantinum resistance thermometer -
## Physics

A car travels in a straight line for 4 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s^2? -
## Physics.

when an e- and a positron collide they're annihlated and their mass converts to engery. the energy released is? [1.64x10^-13 J] -
## Physics/Math

The equation describing the motion of an object is y=0.8cos(4.2t+0.32). What is its period? I don't know how to figure this out? -
## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 . -
## jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm? -
## maths lit,physics,life science n tourism

i don't know which career to choose can you help me ?I'm doing grade 11. -
## Physics

How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2? -
## Physics

Your friend of mass 150 can just barely float in fresh water. Find her volume. -
## physics

a racing car has a uniform acceleration of 4ms-2. what distances will it cover in 10s after start? -
## Physics

A ball rolls off the edge of a balcony at 8.0 m/s. Find its speed after 3.8 s in the air. Use g = 10. m/s2 and enter m/s as unit. -
## physics

What is the period of the hand on a clock that measures the minutes? What is the frequency? Please show work, Thank you, Abbie -
## Physics

What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N -
## physics

how many revolutions per minute would a 15 m ferris wheel need to make for passengers to feel weightless at the top? -
## physics

calculate the work done on n mole of a vander waal gas is an isothermal expansion from volume vi to vf. -
## physics

If acoin roll at 1.5m/s and later rolls at 4.5m/s with an acceleration of 2 meters per squared second how long will it take to come to a stop, how far will it travel? -
## physics

Describe how the energy from a rotating flywheel can be transferred to moving parts of a child's toy. -
## physics

An equipotential surface that surrounds a point charge q has a potential of 516 V and an area of 1.01 m2. Determine q -
## Science: physics

Why does the moon not require a push to keep it along its orbit around the earth? -I have to use Newton's first law of motion. -
## Physics

A 200kg motorcycle is driving in a circular path at 1 rev per 5 seconds and the circle has r=12m -
## physics

the period of revolution of a satellite is 90 min. Find the radius of the orbit assuming an acceleration of 9.8 m/s/s. -
## physics

how much heat must be added to 4.00 kg of aluminum to cause its temperature to rise from 22 degrees C? unit of answer must be joule -
## physics

A helicopter blade spins at 110 revolutions per minute. Its tip is 5.50 m from the center of rotation. -
## physics

what is the magnitude and direction of the electric field 20.0 cm directly above an isolated 33.010 neg6 C charge? -
## Physics

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

calculate the linear momentum of a truck with a mass of 13065kg that is traveling at 36m/s eastward. -
## Physics

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

If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point? -
## College Physics

How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ? -
## physics

Consider a pair of planets for which the distance between them is decreased by a factor of 5. Show that the force between them becomes 25 times greater. -
## physics

Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s. -
## physics

a 10,000hg car rounds a curve of radius 1200ft at 50mph what is its centripetal acceleration?