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Decribe speed && motion..

need help..-speed is the distance you travel in a given time. e.g. you travel 60miles in 2 hours your speed is 30miles per hour motion describes how an object is moving with time. It can be speed ^ o

Which physical quantity is conserved in any type of collision

Momentum-Hi Amateur Child, in any type of collision whether elastic or inelastic, linear momentum is conserved.-Momentum

A 2.40-{\rm g} bullet embeds itself in a 1.40gblock, which is attached to a spring of force constant

A 2.40g bullet embeds itself in a 1.40kg block, which is attached to a spring of force constant 750 N/m. a) If the maximum compression of the spring is 5.60 cm, find the initial speed of the bullet.

Need some help with acceleration homework

I dont understand how to solve for this problem: A bicyclist accelerates at 0.89 m/s^2 during a 5.0 s interval. What is the change in the speed of the bicyclist and the bicycle? Am I supposed to fig

How to find equivalent resistance when switch is open and closed

http://www.webassign.net/cj7/20-p-052-alt.gif The drawing shows a circuit that contains a battery, two resistors, and a switch. Consider the circuit with R1 = 66.9, R2 = 102.6, and V = 10.0. (a) Wha

How the sample should be prepared in sem

details please-Because the SEM utilizes vacuum conditions and uses electrons to form an image, special preparations must be done to the sample. All water must be removed from the samples because the w

In a circuit when the switch is closed the magnetic field produced by the solenoid is very strong

what would happen to the copper ring located next to the circuit (which is free to move) when the switch is closed? when the switch is opened? and how would the answers change if the charge were rever

Hydrogen Atom? Physics please help!!!

A. )In the Bohr model of a hydrogen atom, what is the magnitude of the electric force exerted between the proton and the electron when the electron is in the n = 1 state? ________ N B.)What is the ma

A 1.60-m-long string is under 27.0 N of tension. A pulse travels the length of the string in 57.0 ms.

What is the mass of the string? In grams-v = √(T/u) velocity, v Tenstion, T mass per length, u v = (1.60m)/(.057s) = 28.1m/s Tension = 27.0N Solve for mass per length u = .034kg/m u = m / L L = 1.60m

Why doesn't light break the sound barrier as it travels through atmosphere

This just does not make sense to me.I know that light exhibits wave characteristics as well as a force of about 3 piconewtons per 1 milliwatt of power.So why does light not break the sound barrier whe

Help with Traveling Wave problem please

A spherical wave with a wavelength of 2.0 m is emitted from the origin. At one instant of time, the phase at r = 4.0 m is pi rad. At that instant, what is the phase atr = 3.5 m and r = 4.5 m? Answer i

A mass oscillates on a spring with a period T and an amplitude 0.48 {\rm cm}. The mass is at the equilibrium p

A mass oscillates on a spring with a period T and an amplitude 0.48 cm. The mass is at the equilibrium position x = 0 at t = 0, and is moving in the positive direction. Where is the mass at the time

Law of sine and cosine

Find the measure of angle Z http://curriculum.kcdistancelearning.com… Find thethe measure of angle C http://curriculum.kcdistancelearning.com… Solvetriangle ABC if a = 15, c = 18, and the measure o

A 4 kilogram block of ice is removed from a freezer where its temperature was maintained at – 20 degrees Ce

A 4 kilogram block of ice is removed from a freezer where its temperature was maintained at – 20 degrees Celsius. How much heat does the ice absorb as it is warmed to – 10 degrees?(The specific heat c

Mass spectrometer question grd 12 physics

A sample of two different irons, Fe2+ and Fe3+, are accelerated by the same potential and then sent through the uniform magnetic field of a mass spectrometer. a) Which ion moves faster after being acc
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