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Anonymous

WIll RATE HIGH! instantaneous acceleration. i got part a, but part B is giving me problems. HELP!!!!

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The engine of a model rocket accelerates the rocket vertically upward for 2.0 s as follows: at t = 0, the rocket's speed is zero; at t = 1.0 s, its speed is 7.0 m/s; and at t = 2.0 s, its speed is 25 m/s. Plot a velocity vs. time graph for this motion, and use the graph to determine each of the foll...

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oh no

Faraday pail pattern...

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Can one please please interpret the shape or rathere a brief overview of the faraday pail, the point plane and the plane plane pattern and what the equipotential lines and the E-field lines means please?

Need answer asap!

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Anonymous

Your car has a dead battery. It is initially at rest, and you push it along a level road with a force of 120 N and find that it reaches a velocity of 2.0 m/s in 50 seconds. What is the mass of the car? Ignore friction.

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solve for mass

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Anonymous

A constant force of 400 N acts on a spacecraft of mass 8000 kg that has an initial velocity of 30m/s. How far has the spacecraft traveled when it reaches a velocity of 500 m/s?

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Distance

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anonomus

its a lifesaver

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You have two pieces of different types of metal of the same mass. In a experiment, You take 500 ml of water in a beaker with a diameter of 75 mm at 20.0+/-0.05C in a well insulated container. The two masses are heated to 100C. Metal A is place in the water container. After waiting some time, You fin...

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Anonymous needs help with Physics

A roofing tile falls from rest off the roof of a building. Anobserver from across the street notices that it takes 0.43 second for the tile to pass between two windowsills that are 2.5 m apart. How far is the sill of the upper window from the roof of the

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phs 232

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Calculate the terminal velocity for a baseball. A baseball's diameter is approximately d = 0.070 m, and its mass is m = 0.14 kg. Express your answerin meters per second and miles per hour.

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Physics 1

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Free Fall

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A football is kicked straight up into the air, it hits the ground 5.2 s later. What was the greates...

A football is kicked straight up into the air, it hits the ground 5.2 s later. What was the greatest height reached by the ball? With what speed did it leave the kicker's foot?

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comet1 needs help with Physics

equilibrium lifesaver rating for helping me!!

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a uniform beam of weight 500 N and length 3.0 m is suspended horizontally. On the left is hinged to ...

a uniform beam of weight 500 N and length 3.0 m is suspended horizontally. On the left is hinged to the wall; on the right it is supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap thw cable is 1200N. a) What value of D corresponds to that tension? ...

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equilibrium

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A system is in equilibrium. A concrete block of mass 225kg hangs from the end of the uniform strut o...

A system is in equilibrium. A concrete block of mass 225kg hangs from the end of the uniform strut of mass 45.0 kg. For angles phi = 30.0 degrees and theta = 45.0 degrees. find a) the tension T in the cable and the b) horizontal and c) vertical components of the force on the strut from the hinge. On...

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raezur needs help with Physics

Determine the magnitude and direction of the total force on a wire

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A stiff wire 37.0 ${\rm cm}$ long is bent at a right angle in the middle. One section lies along the $z$ axi...

A stiff wire 37.0 ${\rm cm}$ long is bent at a right angle in the middle. One section lies along the $z$ axis and the other is along the line $y = 2x$ in the $xy$ plane. A current of 18.5 ${\rm A}$ flows in the wire-down the $z$ axis and out the line in the $xy$ plane. The wire passes through a uniform magnetic field given by ${\bf{\vec B}} = \left( 0.318{\bf i} \right)\,{\rm T}$ .
&n...

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Anonymous needs help with Physics

Help me find the displacement please for the given points

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The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of hea...

The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of healthy humans and animals. When grown in a uniform medium rich in salts and amino acids, these bacteria swim along zig-zag paths at a constant speed of 20 um/s. The figure shows the trajectory of an E. ...

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Electric Flux problem

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The following charges are located inside a submarine: 4.89µC , -10.1 µC, 21.0 µC, ...

The following charges are located inside a submarine: 4.89µC , -10.1 µC, 21.0 µC, and -53.1 µC.

(a) Calculate the net electric flux through the surface of the submarine.

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Electric fields, pith balls

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a) Two pith balls each of mass m and carrying charge q are suspended
from the same point by insulatin...

a) Two pith balls each of mass m and carrying charge q are suspended
from the same point by insulating threads of length L. Find an
expression for the angle each string makes with the vertical.

b) A pith ball of mass m and carrying a charge q is attached to the center
of a very large vertical insulating...

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Determine the radius and pitch of the electron's helical path.

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An electron enters a uniform magnetic field = 0.20 ${\rm T}$ at a 43 $^\circ$ angle to ${\bf{\vec B}}$ .
Determine the ...

An electron enters a uniform magnetic field = 0.20 ${\rm T}$ at a 43 $^\circ$ angle to ${\bf{\vec B}}$ .
Determine the radius $r$ and pitch $p$ (distance between loops) of the electron's helical path assuming its speed is 3.5×106 ${\rm m/s}$ . See the figure.

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