Physics

What are all the scalar and vector quantities

could you give me a list of all the scalar and vector quantities-scalar quantities is only magnitude for example: speed distance think about things that only have numbers no directions like 4 meters

How do you turn a KINETIC ENERGY graph into a POTENTIAL ENERGY graph

please help thank you-remember the law of conservation of energy KE +PE =const so basiclly they are the opposite cuase as KE increases PE decreases and vice versa-Situation please?

What is the recoil speed of the archer

A 70.0 kg archer standing on frictionless ice shoots a 200g arrow at a speed of 100m/s. What is the recoil speed of the archer?-200g is 0.2kg. (0.2 x 100)/70 = 0.2857m/sec.-m1v1+m2v2=m1u1+m2u2 by law

When on a slope, why is the x-component sin and the y-component cos

In the problem Im doing a car is on a 10 degree slope. When they are evaluating the x and y components in my textbook they say that Fx=-mgsin(theta)-fk=ma and that Fy=n-mgcos(theta)=ma(y). I understa

Physics help needed!!!

Force F-x=(10N)sin(2pit/4.0s) (where t in s ) is exerted on a 250particle during the interval 0s I need to know how to do this as well as the answer.Thank you. :)-Is the mass 250g or 250kg or some ot

Question about Coulomb's Law

Two spherical objects are separated by a distance that is 9.0010-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the

Who can answer a Physics question

An advertisement states that a 1,250kg car can go from 0 to 60 miles per hour in 3.75 seconds. -Determine its acceleration -Calculate net force required to give the car the acceleration -Find the nor

Is it ever possible to get more then 100%

e.g. say i got 3 litres of Coke for the price of 1 litre (in 1 large 3litre bottle), would that not be 200% extra free? if not please explain.-A percentage is a ratio and it should NEVER be used witho

Can i get help with physics

a 7/3Li has a binding energy of -39.244603 MeV. The mass of a hydrogen atom is 1.007825 u and the mass of a neutron is 1.008665 u 1) What is the mass defect for this isotope? 2) what is the mass of th

What would be the mass of the water

It takes 2.1×106 J of heat to bring a quantity of water from 21C to a boil. What would be the mass of the water in kg?-q = mc (change in temp) boiling pt of water is 100C. so change in temp = 100-21

How long does it take to bounce a laser beam from the moon and back to earth

The moon is 3.8E8 m away from the earth. How long would it take for a laser beam to bounce off the moon and come back to earth?-The distance to the moon and back is 7.6E8 m and the speed of the laser

What is the acceleration of the mass

A 1.83 kg mass is on a 20 degree slope attatched to a pulley with a 2kg mass on the other side. Static coefficient of friction = 0.80 and kinetic coefficient of friction = 0.50. The string and pulley

Grade 12 Physics help pl0x

A sample of two different iron ions, Fe^2+ and Fe^3+, are accelerated by the same potential and sent through the uniform magnetic field of a mass spectrometer. a)Which ions moves faster after being ac

Please somebody explain this simple physics problem

Question: A truck start from a place with an acceleration of 2m/second square.A car passes the same place after 5s with uniform speed of 20m/s. Find the time taken in which car overtakes truck? Answ

Constant acceleration problem (r = (3.2t + 1.8t^2) i + (1.7t - 2.4t^2) j m)

my problem is: The position of an object as a function of time is given by r = (3.2t + 1.8t^2) i + (1.7t - 2.4t^2) j (the r has a vector arrow above it and the i and j have hats above them) where t is