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Physics
Page 89
Questions (147,215)
Describe two advantages and one disadvantage of using high-voltage power fro tranmission lines.
I honestly have no idea and could
5 answers
asked by
Lana
339 views
If the current in a wire is 0.1A, how long will it take for 10C of charge to pass through it?
4 answers
asked by
Anne
386 views
The coefficient of friction = 0.256
Mass of and object = 356 kg What is force of friction? Is this correct?... Ff = umg =
1 answer
asked by
JO
403 views
How do you find the max height of a projectile given the angle and Vi?
Angle = 57.0 degrees Initial V = 46 m/s
1 answer
asked by
JO
333 views
How do you find the coefficient of friction of an object sliding down an inclined plane.
Given: m = 10 kg length of plane = 5.0 m
3 answers
asked by
Megan
416 views
A yo-yo has a string length of 0.200 m
What is the slowest speed at which you can spin it to keep it in a fixed path? What is
6 answers
asked by
Megan
348 views
Is the average velocit over a specific timeinterval always half of the instantaneous velocity at the end of the interval.
I said
1 answer
asked by
George
425 views
According to Kinetic Theory, the molecules of a gas at given temp:
a) all move with speed Vrms b) all move at speeds greater than
1 answer
asked by
Sarah
406 views
In my last post, I'm confused how drwls got P2/P1 = 14.8
1 answer
asked by
Phil
262 views
Is the surface of water truly a node? Why?
An airplane mechanic (standing still) notices that the sound from a twin-engine
3 answers
asked by
Lisa
658 views
You gave yourself 35 min to drive 23 miles to the party, but you are caught in traffic and average 20 miles/hour for the first
3 answers
asked by
George
383 views
A jet powered car leaves from Georgia to Virginia , 4600 km away. It goes 1010 km/h. At the same time another jet powered car
1 answer
asked by
George
424 views
What are the differences between a motor and a generator?
I know they both use electromagnets, but how do they use them
1 answer
asked by
Anne
319 views
Just before landing on mars, a spaceshuttle turns on its retroengine and eventually comes to a complete stop 15 meters above the
1 answer
asked by
Chloe
382 views
QUESTION:
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
1 answer
asked by
Phil
401 views
is physics neccessary for becoming a pharmacist or no? i searched the web and it says yes. so is it true?
1 answer
asked by
Aryan
313 views
sigh this is killing me here...
ok rockets launch at 250 m/s @ an angle of 75.0 degrees. There's a mountain 2500m away from
1 answer
asked by
physics
325 views
A 5 kg mass is thrown up with a velocity of 4 m/s from a height of 30 m onto a spring with a relaxed length of 10 m, and a
4 answers
asked by
Al
369 views
Using the following equation: F=ma Solve for m.
1 answer
asked by
Joe
400 views
for this question the answer is 680..the answer i get is 684 please help
1. it takes you 9.5 mins to walk with an average
4 answers
asked by
y912f
411 views
sorry for reposting this but im really stuck
Simpson drives his car with an Vavg of 48.0 km/h to the east. how long will it take
1 answer
asked by
y912f
428 views
what is the speed of an object at rest?
4 answers
asked by
y912f
286 views
i have a line graph with positions 1-10 in the positive direction.
if a toy car rolls from +3m to +5m, which of the following
3 answers
asked by
y912f
337 views
how do you do this
the motion of a ball on an inclined plane is described by th eequation delta x =1/2 a(delta t)^2. which of the
1 answer
asked by
y912f
307 views
I don't see how I have enough information to answer this question
If a car is traveling westward with a constant velocity of 20
3 answers
asked by
Physics
365 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 answer
asked by
Physics
363 views
A 72kg cement block rides a crane to reach the upper floor of the building. What force does the bucket of the lift exert on the
1 answer
asked by
Harold
370 views
A 72kg cement block rides a crane to reach the upper floor of the building. What force does the bucket of the lift exert on the
1 answer
asked by
Harold
355 views
A 72kg cement block rides a crane to reach the upper floor of the building. What force does the bucket of the lift exert on the
1 answer
asked by
Harold
402 views
How far does a photon (light) move in one nm in units of feet?
1 answer
asked by
Christina AAAA
269 views
The nucleus of an atom has a charge of 65 protons.
(a) What are the direction and magnitude of the electric field at 4.9 x 10^-10
1 answer
asked by
Mara
412 views
How do I find index of refraction if I have the incident angle and refraction angle?
7 answers
asked by
Lena
355 views
can a virtual image be projected on a screen?
thanks :)
3 answers
asked by
konan
430 views
How large is the current U.S. depth and the trade deficit in exponential notation?
1 answer
asked by
Tammy
346 views
A book is launched up a frictionless ramp that has an angle of 35 degrees to the horizontal.If the Book's initial speed is 2.0
1 answer
asked by
Harold
351 views
Sorry to be a nag, but I tried it again, and didn't get it.
Here's the question... A rectangular solid made of carbon has sides
1 answer
asked by
Mel
402 views
An engine has a hot reservoir of 520K and a low temperature reservoir of 330K. What is the theoretical efficiency of this
1 answer
asked by
Bob
365 views
Calculate the acceleration of a Porsche when he goes from 0 miles/hr to 40 miles/hr in 5.6 seconds.
(should I convert 40 miles
1 answer
asked by
Tammy
356 views
How can you prove that acceleration due to gravity is the same in a resting and moving frame?
3 answers
asked by
Christina AAAA
369 views
A virtual image -7 cm tall and 17 cm away from a mirror is created by an object 7 cm away from a mirror. How tall is the object?
1 answer
asked by
Fred
344 views
How much work does a person do to lift 60000 a distance of 7.8 ft in 10s? How much power? Hp?
1 answer
asked by
Cindy
324 views
What is the speed of a 748N person that expends 2260J of K.E. ?
1 answer
asked by
Cindy
223 views
What is the difference between radiant, solar, and thermal energy? Thanks
1 answer
asked by
Don
297 views
how do you tell if two vectors vertical components are equal?
3 answers
asked by
Bella
279 views
how many rollers coasters are there in florida?
6 answers
asked by
honorsclass
416 views
Explain why the mass of the vehicle does not affect the calculated maximum or minimum velocities for cars on banked curves.
1 answer
asked by
Talulah
380 views
I'm doing a lab and all i need to know is how to derive an equation
I'm accelrating over 5m on a flat surface and people timed
3 answers
asked by
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
404 views
Can mirrors create virtual inverted images?
1 answer
asked by
Brock
332 views
If a 2 m tall man is looking at a plane mirror from an eye which is 20 cm from the top of his head, what is the minimum length
4 answers
asked by
Brock
692 views
Two converging mirrors of focal length 30 cm are 15 cm apart. If an object is placed 1 cm from mirror one, how far from mirror
1 answer
asked by
Paul
365 views
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