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Physics
Page 86
Questions (146,867)
Is warm water heating a person swimming in it, convection or conduction; what about warm water heating the air above it?
1 answer
asked by
Isobelle
397 views
Is warm water heating a person swimming in it, convection or conduction; what about warm water heating the air above it?
1 answer
asked by
Isobelle
375 views
How many times larger is the intensity of a sound if you move from 20 m away from it to a distance of 2m?
I think I'm supposed to
3 answers
asked by
Ziyi
430 views
Forces of 10.4 N north, 19.7 N east, and 15.3 N south are simultaneously applied to a 3.73 kg mass as it rests on an air table.
a
1 answer
asked by
Anonymous
405 views
A box moves down a conveyor belt the is angled at 15 degrees, at a rate of 6m/s. The box then enters a dump off that is 3m below
1 answer
asked by
Confused
430 views
Two balls are approaching each other head-on. Their velocities are +10.00 and -12.8 m/s.
(a) Determine the velocity of the center
1 answer
asked by
Brandon
382 views
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I'm still confused about how you got the (1/8)kx^2 and how to find the weight's maximum height at the
1 answer
asked by
Bertrand
307 views
An upright spring which is normally 3 m is compressed 2.3 m and a 2 kg block is placed on it. When it is 5 meters above the
1 answer
asked by
Richard
275 views
Understanding Newton's First and Second Laws, why do all objets near Earth accelerate at a constant rate "g"?
I'm very confused,
1 answer
asked by
Gerrad
373 views
a car accs from 10 m/s to 50m/s in 8 seconds, what is the acceleration?
1 answer
asked by
Tommy
298 views
Does the velocity of a model rocket increase or decrease when the parachute is deployed?
1 answer
asked by
TP
323 views
When a spring is fully extended is the kinetic energy high or low? Why?
4 answers
asked by
John
365 views
What is the final speed of a car if it starts at 32 m/s and loses 1800J of energy?
I think the equation should be: 0.5m(32)^2 -
1 answer
asked by
Angus
330 views
For the harmonic potential V(x,y) = x^2 + y^2
a)Find the total differential, dV. b) Show that dV is exact c) Given that -dV =
1 answer
asked by
Beth
433 views
I have no idea on how to do either part of these questions please help
(part 1 of 2) To move a refrigerator of mass 110 kg into a
1 answer
asked by
NIQUEFROMDALLAS
421 views
How could it be possible thaat an object with a density greater than that of water could float on water.
1 answer
asked by
Fahad
369 views
An object traveling through the air has what forces acting on it.
1 answer
asked by
fahad
328 views
List the particles that make up an atom. What are their charges? How are they arranged? wHat is the approximate amu of each
1 answer
asked by
fahad
436 views
Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs to be at
1 answer
asked by
Juniper
414 views
Samma Sosa hit a ball at 40 m/s at a 22 degree angle. Find the following:
Time the ball was in the air Horizontal distance
1 answer
asked by
Anonymous
409 views
If you had to straighten out a refracted ray that went through a lens with a focal length of +15 cm, what could you do?
3 answers
asked by
Angela
373 views
white liht is produced by blue light and what other liht?
I think it's yellow, but I'm not even sure behind my reasoning. I could
1 answer
asked by
Isobelle
343 views
Show mathematically that a diverging lens will alway produce an upright image. [i.e. prove that hi is positive if f is negative]
1 answer
asked by
Sara
344 views
What are some possible uses for gelled methanol and why was it never used as a fuel in transportation?
1 answer
asked by
Mark
319 views
I need some help getting a formula. I remember in class u get this really wierd looking equation like
Vicosg-((vsin(pheta))/2g) I
1 answer
asked by
Physics
414 views
A monkey hangs from a tree by both arms in an effort to catch his breath. If he has a mass of 65.0 kg, what is the tension of
1 answer
asked by
cookie monster
368 views
if a 900-kg box slides down in a slide inclined at 25degrees to the horizontal and the coefficient of friction between the box
1 answer
asked by
cookie monster
392 views
what can have a varying velocity and varying speed
3 answers
asked by
Jessica
306 views
mass of star = 3.80 x 1030 kilograms
mass of planet = 6.35 x 1024 kilograms mass of moon = 7.63 x 1022 kilograms average distance
2 answers
asked by
Nick
852 views
For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.)
with just these,
1 answer
asked by
charlie
402 views
For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.)
with just these,
1 answer
asked by
charlie
400 views
the question is to write down a relationship for the potential energy of a body of mass m, when it is a distance r from the
1 answer
asked by
Anya
415 views
Why is the momentum in a spaceship traveling in space not conserved?
Can someone please explain? thanks
1 answer
asked by
mw
378 views
A ball and a barrel roll down a 16m-long incline of height "h."
Assume I equals 2/5mr^2 for the ball I equals 1/2mr^2 for the
1 answer
asked by
Elli
396 views
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
338 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
423 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
381 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
422 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
317 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
400 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
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