physics please HELP !
74,641 results, page 58

PHYSICS
the following data were obtained for the position of a ball as it rolled along a straight track DISPLACEMENT (CM) TIME 2.90 0.60 7.40 2.10 11.00 3.30 22.70 7.20 31.10 10.00 
physics
A 1100 kg sports car accelerates from 0m/s to 33m/s in 13s What is the average power of the engine? 
physics
How can the equation be prove:maximum height,time of flight and maximun range in projectile? 
physics
An elevator weighing 2400 N ascends at a constant speed of 5.0 m/s. How much power must the motor supply to do this? 
physics
a racing car accelerates from rest to 30m/s in 6.0s what is her average acceleration? the answer in the book is 0.5m/s^2 
Physics
You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope. 
Calculus
no one on physics forums seems to know the answer so I was wondering if you guys could help post anser on these forms of course if you can help my question is here h t t p : / / w w w . p h y s i c s f o r u m s . c o m / s h o w t h r e a d . p h p ? t = 4 2 1 7 5 8 
physics
Calculate the internal energy of 25.0 g of lowdensity oxygen gas (O2) at a temperature of 255 K. 
physics
A yoyo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yoyo if I hold the string with my fingers? 
Physics
A child slides down a hill on a toboggan with an acceleration of 1.5 m/s squared. If she starts at rest, how far has she traveled in 1.0 s, 2.0 s, and 3.0 s? 
Physics
Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker? 
physics
An elevator is moving upward at 1.00 m/s when it experiences an acceleration 0.28 m/s2 downward, over a distance of 0.74 m. What will its final velocity be? 
physics
An elevator is moving upward at 0.93 m/s when it experiences an acceleration 0.29 m/s2 downward, over a distance of 0.67 m. What will its final velocity be? 
physics
How long will it take a 1630 W motor to lift a 285 kg piano to a sixthstory window 16.0 m above? 
physics
2. A hockey player is skating in a straight line at 1.5 m/s. He then increases his speed to 7 m/s in 3 s. What is his average acceleration during this 3 s? 
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
A family drives 400 milles in 8 hours. Explain how the acceleration of their car changed? 
Physics
Find the maximum height reached by a ball thrown upward at a velocity of 95ft/s 
Physics
An automobile with an initial speed of 3.56 m/s accelerates uniformly at the rate of 2.7 m/s2. Find the displacement of the car after 4.1s. 
physics
How much time does a passerby on the sidewalk below have to move out of the way before the flowerpot hits the ground? Answer in units of s. 
Physics
What is the gravitational force between two identical 4,500 kg asteroids whose centers of mass are separated by 120 m? 
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
what is the heat required to convert 0.1 kg of melting ice into steam at 100 degree celcius 
Physics
A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2 
Physics
What exerts the force obn a rocket in outer space to make it move forward? 
Physics
Why is it that interference effects don't show up regularly in glass window panes with two surfaces? 
Physics
What is the potential energy, in joules, of a spring with a force constant of 6 N/m when it is stretched 20 cm from its unstretched length 
physics
calculate the linear momentum of a truck with a mass of 13065kg that is traveling at 36m/s eastward. 
Physics
If a tern travels 3.20 x 10^4 km south in 122 days, what is its average velocity in kilometers per day? 
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
Where must an object be placed to have a magniﬁcation of 3.74 in front of a converging lens of focal length 14.1 cm? 
Physics
A boy sledding down a hill accelerates at 1.25 m/s2. If he started from rest, in what distance would he reach a speed of 5.00 m/s? 
physics
if two forces 10N and 20N are inclined at angle 60degree to each other. Find the resultant force. 
Physics
An elevator is moving upward at 0.90 m/s when it experiences an acceleration 0.40 m/s2 downward, over a distance of 0.64 m. What will its final velocity be? 
physics
What is the minimum work in joules needed to push a 1540 kg car 44.0 m up a 12.5 degree incline? 
Physics
Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker? 
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
What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04m ? 
Physics
"At what point between two masses of 20kg and 15kg located 1.0m apart, will the gravitational field strength equal zero?" 
physics
A 15 kg box slides across the floor with an initial velocity of +7.6 m/s. It comes to a stop after sliding +14.8 m. How much friction was present? 
Physics
What is the frequency of an EM wave emitted most strongly by a glowing element on a stove with temperature 1500 K? 
Physics
What is the difference between 110, 220 and 440 volts. How does amperage play a role with voltage 
Physics
Why is an ice cube at 0°C more effective in cooling soft drink than the same mass of water at0°C? 
Physics
Where does it takes less time to boil eggs: in a pan of boiling water or in a pressure cooker? 
physics
Strictly speaking, you weigh a tiny bit less when you are in the lobby of a massive skyscraper than you do at home. Why is this so? 
Physics
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state? 
physics
a 60kg sprinter accelerates from rest at 2.5m/s east for 4s. what force is acting and what is his final speed? 
physics
a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec 
grade 11 physics
what is the index of refraction of a medium in which the speed of this radiation is 2.54X10^8 m/s? I don't even know where to start... 
Physics
A boy sledding down a hill accelerates at 1.25 m/s2. If he started from rest, in what distance would he reach a speed of 5.00 m/s? 
Physics
An elevator is moving upward at 0.90 m/s when it experiences an acceleration 0.40 m/s2 downward, over a distance of 0.64 m. What will its final velocity be? 
Physics
An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.34 m/s 2 downward, over a distance of 0.80 m. What will its final velocity be? 
physics
on a cool night with no wind people facing a campfire feel a breeze on their backs. why? 
physics
How long will it take a 1920 W motor to lift a 285 kg piano to a sixthstory window 16.0 m above? 
Physics
a 475 kg prestressed concrete beam is to be raised 10.0 m in 24.0 s. how many kw of power is needed to for the job 
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 family drives 400 milles in 8 hours. Explain how the acceleration of their car changed? 
Physics
Is this true or false? All objects moving in a circle are accelerated. I really don't uderstand this question. 
physics
A 4430kg helicopter accelerates upward at 2.2 m/s2. What lift force is exerted by the air on the propellers? 
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 will it take a car to cover a distance of 500 meters if it accelerates from rest at a rate of 5.50 m/s2? 
physics
In the Melde's string apparatus, why there is no standing wave in the segment between the pulley and mass hanger? 
Physics
What push parallel to a 42 incline is required to just start a 340 N block sliding up the plane? us = 0.6 
physics
An elevator is moving upward at 1.20 m/s when it experiences an acceleration 0.25 m/s2 downward, over a distance of 0.71 m. What will its final velocity be? 
Another physics question...
Deduce the electric field strenght at a point midway between charges of 7.2*10^6 C and 3.4*10^6 C that are 2.0m apart from air. Thank you! 
Physics
A boy sliding down a frictionless plane inclined at an angles 35° with the horizontal. What is the acceleration of the book? 
Physics
Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high 
physics/math
If you are driving 116 km/h along a straight road and you look to the side for 3.0 s, how far do you travel during this inattentive period? 
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 projectile is fired at an angle of 60 degrees with the horizontal and with the initital velocity of 80 m/s. What is the time of flight? 
physics please help
Forces of 4.57 N and 4.74 N act at right angles on a reddishgreen block of mass 5.76 kg. How much acceleration occurs? 
physics
What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 7.9 m/s when going down a slope for 7.4 s? 
Physics
A boy sledding down a hill accelerates at 1.70 m/s2. If he started from rest, in what distance would he reach a speed of 7.40 m/s? 
Physics
A boy sledding down a hill accelerates at 1.70 m/s2. If he started from rest, in what distance would he reach a speed of 7.40 m/s? 
Physics (fix)
In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can? 
physics
a ball of mass m is thrown vertically upwards with Vo= 10j m/s. Study nature of motion 
physics
A neutron star has 10 km radius and rotation period 1.2 s What's the centripetal acceleration on its surface at the equator? 
physics
A stone of mass m kg is held h metres above the floor 50s.The workdone in joules over this period is 
college physics
an automobile traveling at 25.0 km/h along straight,level road accelerates to 65.0 km/h in 6.00s what is the acceleration 
Physics
What is the tension in the string in (Figure 1) ? The volume of plastic ball is 95 cm3 and the density is 840 kg/m3. 
physics
what force is acting on a circular platform rotating opposite of a person standing on the edge? 
ap physics
How fast would a 1200 kg car travel if it had the same linear momentum as a 1500 kg truck traveling at 90 km/h? 
Physical Science
What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles? 
PHYSICS
The force applied by the ebrake is F(eb) = m*a(eb) = 8.13*1452 = 12,100 N I didn't get the same answer  I got 11,804.76....please check 
physics
Forces of 9.93 N and 1.23 N act at right angles on a reddishgreen block of mass 3.02 kg. How much acceleration occurs? 
physics
define black body, emissivity, solar constant in relation to heat transfer. 
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
Correct the following statement: The racing car rounds the turn at a constant velocity of 145 km/hr. 
Physics
Two electrons are fixed 2.99 cm apart. Another electron is shot from infinity and stops midway between the two. What is its initial speed? 
Physics
What coefficient of friction is required to stop a hockey puck sliding at 12.8 m/s initially over a distance of 66.5 m? 
Physics
A train whose speed is 100km/hr rounds a curve whose radius of curvature is 150m what is the acceleration? 
physics
A ball of mass xg is release from a height of 20m . Calculate the time taken to fall to the ground. 
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
i want a simple laboratory method of determining a young modulus of a long thine wire 
Physics
a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity 
physics
During a hard sneeze, your eyes might shut for 0.43 s. If you are driving a car at 125 km/h, how far does it move during that time? 
physics
Figure 1823 shows three linear temperature scales, with the freezing and boiling points of water indicated. 
physics
A mango fruit drops from the top of it's tree which is 40 m. How long does it takes to reach the ground 
College Physics
If the uncertanty in the slope is 1.214×1014, is the measured value of ε0 within experimental uncertainty of the accepted value? (Yes or No) 
physics PLEASE HELP ME
a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity