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Physics
Page 93
Questions (147,036)
A roller coaster is at the top of a 98.2 m hill and has a mass of 1831.0 kg. It is traveling at a velocity of 23.7 m/s. What is
4 answers
asked by
Carl
341 views
if the intensity of a mosquito's buzzing is 9.3 x 10^-8 W/m^2 at a distance of 0.21 m, how much sound power does that mosquito
1 answer
asked by
Rhyanna
383 views
Please someone help me out I'm so confused!
A system consists of 2.0mol of an ideal monatomic gas at 375 K . How much heat must
1 answer
asked by
Franky
424 views
A 770N woman sitting on a frictionless surface throw a 2.6 kg book at a speed of 35 m/s. What is her recoil speed in m/s?
1 answer
asked by
Nicole
300 views
A girl kicks her soccer ball with a velocity of 2m/s at an angle of 40 degrees with the horizontal. what is the total time? what
1 answer
asked by
Lauren
411 views
Adding Vectors Graphically:
2m/s @65 degrees and 6m/s @ 320 degrees 20 m @ 90 degrees and 5 m @200 degrees
1 answer
asked by
Velecia
413 views
I'm not sure how to go about solving this problem the algebra gets very messy...
At what distance formt he EArth will a
1 answer
asked by
Jake
324 views
How far does a plane fly in 15 s while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration?
1 answer
asked by
Priscilla
393 views
What is the kinetic energy of a 1500 kilogram object moving at 25 m/s?
1 answer
asked by
Aly
339 views
A man skis down a slope 120 m high. If 80 percent of his initial potential energy is lost to friction and air resistence, what
4 answers
asked by
Aly
404 views
The potential energy of a golf ball in a hole is negative with respect to the ground. Under what circumstances (if any) is the
1 answer
asked by
Aly
381 views
A car travels 15 miles east in 34 minutes. what is the velocity in miles per hour?
1 answer
asked by
Aly
400 views
List the fossil fuels in order in which they will probably be used up.
1 answer
asked by
Aly
388 views
A single 11 Newton force is applied to an object of mass 19 kg. What is the acceleration of this object in m/s2
1 answer
asked by
Aly
414 views
A object of mass 2 kg experiences an acceleration of 4 m/s2. What is the net force on the mass in Newtons?
1 answer
asked by
Aly
314 views
A 2.0-kg rock falls from a height of 25 m to a point 20 m above the ground.
How much potential energy does it lose? GIVEN: mg =
3 answers
asked by
Priscilla
410 views
What is the gravitional potential energy of a 100-kg rocket when it is at a distance of 1.0 x 10^7 m from the center of the
1 answer
asked by
Priscilla
414 views
A vaulter holds a 20.7 N pole in equilibrium by exerting an upward force, U, with his leading hand, and a downward force, D,
1 answer
asked by
Tim
336 views
I believe I've done this right
A penguin sildes 1.5 m/s across the ice on her belly. The coefficient of kinetic friction is .02
1 answer
asked by
Kate
386 views
Satna has delivered gifts to the good Atlatean children. Now his erindeer need to lift him out of the ocean. The density of
1 answer
asked by
Kate
403 views
The string is 1.40 m long with tension 12.00 N. The total mass of the string is 0.010 kg. Find the wavelength of this standing
1 answer
asked by
College student in need of help
331 views
Please respond to my previous post.
1 answer
asked by
Phil
306 views
A 2000 kg truck is raised 15 m in an elevator. What is the increase in its potential energy?
4 answers
asked by
Anna
354 views
A mass m is hanging on a string that passes over a pulley and is then attached to another mass 3m that is resting on a
1 answer
asked by
Bob
423 views
A car with a mass of 100 kg, with initial v = 1 m/s, has 60 Joules of energy added for 50 m. What is the final velocty?
I'm using
4 answers
asked by
Jack
360 views
were did this come from this is a momentum problem
After some messey algebra it can be said that V_B = (2 m_A V_o_A)/(m_A + m_B)
1 answer
asked by
Kate
372 views
A car is driven from point A to B at a constant speed of 25.0 m/s along a straight line, and then back from point B to A at a
1 answer
asked by
Mandy
387 views
The position of an object changes with time according to the expression x(t) = 5t62 = 3t - 1. What is the position of the object
1 answer
asked by
Mandy
306 views
The velocity of a particle is given by the relation v(t)=(-5.00 x 10⁷)t² = (3.00 x 1065)t. At time t=0, the particle is
1 answer
asked by
Mandy
410 views
I need help with these two uestions, thanks
1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does
1 answer
asked by
MJ
408 views
What experiment can be used to prove that the value of gravity near the earths surface is constant ie. 9,8m.s
1 answer
asked by
Ranbir
320 views
This is a pretty simple physics problem, but I do not know how to go about it.
How do I: Show that the time required for a
1 answer
asked by
Jeremy
353 views
As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?
1 answer
asked by
Anonymous
299 views
Anyone can help me solve 2 of those problems
A man lifts a box of books that weigh 185N. The box is lifted 0.80m. How much work
4 answers
asked by
MJ
566 views
A 10 N toy rocket is fired straight up [KE= 40 J]. At the very top of its trip, the total mechanical energy= 140 J. What was the
1 answer
asked by
Anonymous
298 views
physics - drwls, Sunday, January 24, 2010 at 2:50am
Compute the angle of the strings from vertical. It is sin^-1 (8.5/40) Call
1 answer
asked by
Lanise
374 views
Whila riding a bike, a rider exerts a fore of 540 N on the pedal, which when attatched to a sprocket creates a radius of
1 answer
asked by
Jill
354 views
A map of a burned area obtined from remote sensing contains 120 pixels. The remote sensing image shows that the fire is isolated
1 answer
asked by
Hannah
426 views
Why use remote sensing for obtaining information about areas or objects?
1 answer
asked by
Hannah
325 views
Why use remote sensing for obtaining information about areas or objects?
1 answer
asked by
Hannah
421 views
1) The question asked to find the ionosphere reading for your area today and gives you s web site.
I went on the website but I
1 answer
asked by
Abby
320 views
what is the force on a body of a mass 77-kg when its acceleration is 4m/s^2?
1 answer
asked by
justin
323 views
A force of 0.20N acts on a mass of 100g. What is the acceleration?
3 answers
asked by
Mike
390 views
Velocity is
a) is the same as speed b) has both magnitude and direction c) is a scalar quantity d) is specified by direction only
1 answer
asked by
Bryian
380 views
1) A Newton is
A A unit of force B) 1kg m/s^2 C) A derived unit D) All of these I think its D, am I correct? 2) A falling
1 answer
asked by
Bryian
397 views
On the lower left corner of a square is a fixed charge qLL = 1.5x10^-9 C and on the loser right corner is a fixed charge qLR =
2 answers
asked by
Diane
608 views
Please help me with these three questions. They deal with coefficient of friction
1) A car rounds a turn of radius 25m at a speed
1 answer
asked by
Bryian
462 views
Kinetics is linked to dynomics by
a) Velocity b) distance c) time d) acceleration I am not so sure but I have a feeling it is D
1 answer
asked by
euro
391 views
Sorry for the repost, i made a typo in the original post's subject.
A dry water well is 1.5 m in radius and 5.0 m deep. In order
1 answer
asked by
Sammy
374 views
Please help me with these three questions,they deal with coefficient of friction
1) A car rounds a turn of radius 25m at a speed
1 answer
asked by
bryian
425 views
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