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Physics

Questions and answers by visitors named Physics

Questions (182)

A Ball of Mass 0.5kg Moving At 10m/s Collide With Another Ball Of Equal mass At Rest.If The Two Balls Move Together After The
1. 6 answers
2. 2,921 views
I have a question concerning waves. What effect does increasing the tension in a vibrating string have upon wavelength? I was
1. 1 answer
2. 506 views
A 100W light bulb is left on for 10hrs. Over this period of time how much energy is used by the bulb?am i doing this right? my
1. 4 answers
2. 2,591 views
A 1200 W hair dryer is designed for 117 v.a) What will be the percentage change in power output if the voltage drops to 105 v.
1. 3 answers
2. 1,727 views
Suppose you want to run some apparatus that is 95 m from an electric outlet. Each of the wires connecting your apparatus to the
1. 4 answers
2. 800 views
Ok I asked this question beforeA lbock is given an intial speed of 4.0 s^-1 m up the 22 degree plane How far up the plane will
1. 6 answers
2. 420 views
What can you say about the motion of a body if its veloctiy-time graph is a straight line inclined with the time axis?a. the
1. 2 answers
2. 731 views
A lbock is given an intial speed of 4.0 s^-1 m up the 22 degree planeHow far up the plane will it go ok I got this to be
1. 3 answers
2. 463 views
I need some help getting a formula. I remember in class u get this really wierd looking equation likeVicosg-((vsin(pheta))/2g) I
1. 1 answer
2. 428 views
I need some help getting a formula. I remember in class u get this really wierd looking equation likeVicosg-((vsin(pheta))/2g) I
1. 1 answer
2. 454 views
A crate is pulled right with a force of 82.0N to the left wtih a force of 115N upward with a force of 565N and downward with a
1. 5 answers
2. 6,334 views
A craet is pulled right with a force of 82.0 N to the left with a force of 115N upward with a force of 565N and dow ward with a
1. 3 answers
2. 1,574 views
a ugst of wind blows an apple from a tree. AS the apple falls the force of gravit on the apple is 9.25N downward and the force
1. 39 answers
2. 1,302 views
A 200 N/m, 5 m spring on a 20 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect friction, how
1. 1 answer
2. 361 views
I don't see how I have enough information to answer this questionIf a car is traveling westward with a constant velocity of 20
1. 3 answers
2. 380 views
An object thrown into the air stops at the highest pooint in its path is it in equilbrium at this point explain?I siad yes
1. 1 answer
2. 370 views
Yah i got another questiona large crate is placed on the bed of a truck but is not tied down as the truck accelerates forward
1. 4 answers
2. 1,984 views
A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^s Determine the coefficent of kinetic friction between the
1. 3 answers
2. 1,867 views
An object creates an inverted, virtual image, 3 cm tall, 10 cm from a converging mirror with a focal length of 15 cm. Where is
1. 1 answer
2. 448 views
When a plane experiences a decrease in weight must there also be decrease in lift? I'm thinking the answer is yes in order to
1. 3 answers
2. 259 views
Is anyone aware of some good links to sites which discuss and explain G-Force? I've searched but haven't come up with anything
1. 6 answers
2. 416 views
A 15 N wooden block is dragged for 15 meters across a wooden floor in 15 seconds...I'm given that the mew (the greek leter uk)
1. 3 answers
2. 546 views
could you tell me how to solve for accerating force above friction force?my problem was down below the topic science again
1. 1 answer
2. 293 views
So I got this little sheet calledShoot the Chute To be sure you understand the preceeding question and answer, consider this
1. 2 answers
2. 788 views
I'm not exactly sure how to do this problemThe Earth has a radius of 6.37E6 meters. Draw a picture and calculate: - The
1. 2 answers
2. 565 views
I'm not exactly sure how to do this problemThe Earth has a radius of 6.37E6 meters. Draw a picture and calculate: - The
1. 2 answers
2. 536 views
Hello recently I was asked to find the time it takes a satalite that is geocentric (that always stays above the same exact spot
1. 4 answers
2. 454 views
How do i Do thisA wave of amplitude 0.30 m interfers witha second wave of amplitude 0.20 m. What is the largest resultant
1. 2 answers
2. 513 views
I don't know how to answer this questin i guess I don't understand the definitionA streteched sgtring fized at both ends is 2.0
1. 2 answers
2. 1,272 views
Hello can some one show and exlpain to me the derivation of this formula?V = (Ft(mL^-1)^-1)^(2^-1) or simply V = sqrt (F/(m/L))
1. 1 answer
2. 411 views
A light spring having a force constat of 125 N/m is used to pull a 9.50kg sled on a horizontal frixtionless ice rink. If the
1. 5 answers
2. 2,873 views
I'm given two cars A and BCar A is 1100 kg and traveling at 11 m/s Car B is 1400 kg and traveling at 15 m/s and I'm asked to
1. 1 answer
2. 392 views
I'm given a spring that has a mass of 100 g and a constant of 22 N/m with an A of 5 cmI belive the A is amplitude and I'm asked
1. 3 answers
2. 384 views
def of average velocity = t^-1 (x - x0)(average velocity = t^-1(x-x0))t=(avearge velocity)t + x0= x - x0 + x0 = x = (average
1. 1 answer
2. 931 views
can you show me how to do this mathematicallyA car traveling 90 km/h is 100 m behind a truck traveling 75 km/h. How long will it
1. 5 answers
2. 763 views
the speed of a car can be measured in s^-1 m right...it could be said that a speed of a car the velocity was 15 s^-1 m which is
1. 3 answers
2. 292 views
when trying to find uncertanty percent error and your given the number - 15 s^-2 m with a implied uncertanty of +/- 1 s^-2 m and
1. 2 answers
2. 493 views
I'm trying to rearange this0 = Xo + 2^-1 a t^2 for t I've been told that it is (a^-1 2x)^(2^-1) but I do not see how please show
1. 2 answers
2. 504 views
A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. what is its final displacement from the origin?
1. 4 answers
2. 3,718 views
A ball is thrown horizontally from the roof of a building 9.0 m tall and lands 8.5 m from the base. What was the ball's intial
1. 5 answers
2. 3,305 views
Ok the problem I'm doing has two parts I know how to do part a and got the right answer I think...I do not know how to do part b
1. 7 answers
2. 516 views
My question isA block is given an intial speed of 4.0 s^-1 m up the 22 degree plane How far up the plane will it go? How much
1. 2 answers
2. 659 views
When I asked my teacher for help he told me thisThis is a logical puzzle. Having 75% of the typical weight means experiencing
1. 3 answers
2. 647 views
I have two questions this oneA 750-N force acts in a northweserly direction. A secon 750-N force must be exerted in what
1. 5 answers
2. 1,631 views
ok so I have a questionAt the instatn a race began, a 57-kg sprinter was found to exert a force of 80 N on the starting lbock at
1. 3 answers
2. 845 views
So I got a questionOne 3.5-kg paint bucket is hanging by a massless cord from another 3.5-kg pain bucket, aslo hanging by a
1. 2 answers
2. 504 views
I posted this question earlier and I still don't get itSo I got a question One 3.5-kg paint bucket is hanging by a massless cord
1. 2 answers
2. 508 views
I'm tyring to undersatnd uh motion of a particle at an incline on a ramp with a certain angle with the horizontal.the force
1. 3 answers
2. 571 views
Three blocks on a frictionless horizontal surface are in contact with each otherA force F is applied to block 1 (m1) Draw a free
1. 4 answers
2. 1,611 views
Ok I got a question I asked before except there are other parts that I didn't ask so here we goThree blocks on a frictionless
1. 6 answers
2. 601 views
I got two questionsThree blocks on a fricitonless horizontal surface are in contact with each other a force F is applied to
1. 5 answers
2. 1,338 views
Ok I guess the reason why I do not know how to do this problem is because I can not draw the proper free-body diagram...Three
1. 2 answers
2. 837 views
I've asked a similar qustion earlier and now I think I have drawn the correct free body diagram and go about solving the
1. 6 answers
2. 935 views
a wire has a resistance of 10 ohms. The length of the wire is doubled, and its radius is also doubled. What is the new
1. 3 answers
2. 691 views
Is mass the one and only thing that produces a gravitional force???
1. 1 answer
2. 351 views
I have a question26. A box weighing 85 N rests on a table. A rope tied to the box runs vertically upward over a pully and a
1. 6 answers
2. 1,085 views
a mass (m1) on a smooth horizontal surface, connected by a thin cord that passes over a pulley to a second block (m2), which
1. 3 answers
2. 941 views
A model rock is shot into the air. Once it starts to fall a parachute is deployed. Draw a free body diagram of the rocket with
1. 3 answers
2. 503 views
A coin is placced 12.0 cm from the axis of a roatating turntable of variable speed. When the speed of the turntable is slowly
1. 3 answers
2. 926 views
A coin is placced 12.0 cm from the axis of a roatating turntable of variable speed. When the speed of the turntable is slowly
1. 2 answers
2. 1,041 views
centripetal acceleration= frictionm*w^2 r = mu*mg changing 50 rpm to rad/sec mu=w^2 r/g=(50*2PI/60)^2 * .12 which is not your
1. 1 answer
2. 447 views
Tarzan plans to corss a gorge by swinging in an arc form a hanging vine. If his arms are capable of exerting a force of 1400 N
1. 1 answer
2. 439 views
I have no idea how to do this problemAt what distance from the Earth will a spacecraft on the way to the Moon esperience zero
1. 1 answer
2. 423 views
can you walk me through this problemAt what distance from the Earth will a spacecraft on the way to the Moon esperience zero net
1. 4 answers
2. 592 views
At t= 0, a particle starts from rest at x= 0, y= 0, and moves in the xy plane with an acceleration ->a (vector) = (4.0ihat+
1. 4 answers
2. 4,466 views
If Vx= 8.00 units and Vy= -6.40 unis, determine (a)the magnitude and (b)direction of ->V(vector)b) theta= ______ degrees below
1. 4 answers
2. 5,601 views
I gues I'm looking at this the wrong way i do not understand the work you do to get to the answerQuestion: Find the air velocity
1. 1 answer
2. 421 views
One car has twice the maqss of a second car, but only half as much kiinetic energy. When both cars increase their speed by 7.0
1. 1 answer
2. 351 views
The cable supporting a 2100kg elevator has a maximum strength of 2.19×10^4 N.What maximum upward acceleration can it give the
1. 3 answers
2. 2,332 views
Mass m_A rests on a smooth horizontal surface, m_B hangs vertically.If m_A=15.0 kg and m_B=3.0 kg in the figure , determine the
1. 2 answers
2. 927 views
A small block of mass m rests on the sloping side of a triangular block of mass M which itself rests on a horizontal table.Assum
1. 4 answers
2. 2,042 views
I'm not sure how to do this problemA 145-g baseball is droppexc from a tree 12.0 m above the ground. (a) Wtih what speed would
1. 1 answer
2. 423 views
I'm not sure how to do this problemA .40 kg ball is thrown with a speed of 10 s^-1 m at an angle of 30 degrees. (a) What is its
1. 3 answers
2. 1,018 views
I keep on getting the wrong answer I don't know if there is even static friciton in this problem in the begining before the rope
1. 1 answer
2. 487 views
I keep on getting the wrong answer I don't know if there is even static friciton in this problem in the begining before the rope
1. 1 answer
2. 398 views
momentum equals = mass (velocity)yet for problems I end up using this P = m (delta v) what allows us to simply put the delta
1. 1 answer
2. 440 views
I agree with this and see were it comes fromnet force = (delta p)/t so momentum is conserved when net force equals zero... net
1. 2 answers
2. 571 views
Ok work...work = net force parallel to displacement lets say something was pushed up a ramp at a constant velocity and you were
1. 2 answers
2. 787 views
How am I doing this problem wrongOn a strange, airless planet, a ball is thrown downward from a height of 17 m. The ball
1. 3 answers
2. 796 views
when an object is rotating in a circle and the only force is acting on it is friction how is force of friction vector pointing
1. 2 answers
2. 532 views
i was woundering if you could point in the right directioni'm looking for very easy physics topics that makes use of the law of
1. 1 answer
2. 407 views
I'm confused and am hoping someone could help me understandenergy can neither be created nor destroyed... great... so in physics
1. 2 answers
2. 650 views
How much pressure is required to crack an egg under waterIs there like a table I could look at that has values for how much
1. 1 answer
2. 345 views
Determien the mass of the Sun using the known value for the period of the Earth and its distance from the Sun.I do not remeber
1. 4 answers
2. 1,361 views
a man stand on a 100 m cliff and throws a rock with speed of 40ms at 42degrees above horizontal.what time before rock hits
1. 2 answers
2. 491 views
A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the
1. 1 answer
2. 453 views
A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the
1. 1 answer
2. 502 views
In order to keep a leaking ship from sinking, it is necessary to pump 15.0 {\rm lb} of water each second from below deck up a
1. 3 answers
2. 754 views
A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the
1. 3 answers
2. 597 views
A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the
1. 4 answers
2. 967 views
A 95 kg astronaut and a 1500 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite,
1. 1 answer
2. 733 views
A 0.409 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.5 N/m. The
1. 3 answers
2. 1,030 views
A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking
1. 3 answers
2. 1,230 views
A 4.00 µF capacitor is connected to a 18.0 V battery. How much energy is stored in the capacitor?This should be a relatively
1. 4 answers
2. 5,410 views
A 1.63 nF parallel-plate capacitor is charged to an initial potential difference ΔVi = 100 V and then isolated. The dielectric
1. 4 answers
2. 7,290 views
The inner conductor of a coaxial cable has a radius of 0.900 mm, and the outer conductor's inside radius is 5.00 mm. The space
1. 3 answers
2. 1,811 views
Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of
1. 4 answers
2. 4,870 views
A long, straight wire lies on a horizontal table and carries a current of 1.45 µA. In a vacuum, a proton moves parallel to the
1. 2 answers
2. 998 views
A charged particle is at the origin of coordinates. Theparticle produces an electric field of 4 kN/C at the point with position
1. 2 answers
2. 1,165 views
A square loop with resistance R=0.001 Ohms,mass 1.0 gram, and side length 1.0 m is falling into a region of uniform magnetic
1. 2 answers
2. 531 views

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