Questions and answers by

Physics

Questions (182)

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. 399 views
I'm confused and am hoping someone could help me understandenergy can neither be created nor destroyed... great... so in physics
1. 1 answer
2. 734 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. 0 answers
2. 459 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. 1 answer
2. 595 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. 1 answer
2. 859 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. 1 answer
2. 860 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. 1 answer
2. 624 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. 483 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. 0 answers
2. 447 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. 0 answers
2. 527 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. 1 answer
2. 1,069 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. 474 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. 1 answer
2. 2,156 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. 1 answer
2. 1,013 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. 1 answer
2. 2,428 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. 0 answers
2. 410 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. 488 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. 3 answers
2. 5,710 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. 3 answers
2. 4,569 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. 3 answers
2. 680 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. 469 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
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2. 509 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. 537 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. 1 answer
2. 1,113 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. 1 answer
2. 1,014 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. 2 answers
2. 571 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. 2 answers
2. 1,025 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. 5 answers
2. 1,194 views
Is mass the one and only thing that produces a gravitional force???
1. 1 answer
2. 405 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. 2 answers
2. 754 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. 5 answers
2. 1,027 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. 1 answer
2. 918 views
I got two questionsThree blocks on a fricitonless horizontal surface are in contact with each other a force F is applied to
1. 4 answers
2. 1,405 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
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2. 703 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. 2 answers
2. 1,704 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. 5 answers
2. 502 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. 2 answers
2. 546 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. 2 answers
2. 631 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. 1 answer
2. 590 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. 1 answer
2. 580 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
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2. 929 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. 4 answers
2. 1,707 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. 2 answers
2. 746 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. 1 answer
2. 741 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. 589 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. 3 answers
2. 3,404 views
A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. what is its final displacement from the origin?
1. 2 answers
2. 3,826 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. 1 answer
2. 578 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. 1 answer
2. 571 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. 2 answers
2. 347 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. 4 answers
2. 859 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. 0 answers
2. 991 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. 2 answers
2. 453 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
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2. 468 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. 2 answers
2. 2,979 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. 468 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. 1 answer
2. 1,355 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. 1 answer
2. 564 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. 3 answers
2. 543 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. 1 answer
2. 603 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. 0 answers
2. 639 views
So I got this little sheet calledShoot the Chute To be sure you understand the preceeding question and answer, consider this
1. 1 answer
2. 862 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. 344 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. 2 answers
2. 612 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. 5 answers
2. 490 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. 2 answers
2. 304 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. 510 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. 1 answer
2. 1,957 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. 2 answers
2. 2,105 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. 0 answers
2. 432 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. 2 answers
2. 428 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. 421 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. 1,407 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. 1 answer
2. 1,662 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. 3 answers
2. 6,431 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. 513 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. 0 answers
2. 494 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. 1 answer
2. 815 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. 3 answers
2. 871 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.
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2. 1,797 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. 3 answers
2. 2,668 views
I have a question concerning waves. What effect does increasing the tension in a vibrating string have upon wavelength? I was
1. 0 answers
2. 594 views