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Physics
Page 91
Questions (147,518)
Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit.
Do I use the formula
3 answers
asked by
James
317 views
Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit.
Do I use the formula
1 answer
asked by
Malcom
381 views
I dropped an object from a certain height and gravity was acting on it. What type of motion is that and how do I know this?
1 answer
asked by
Lena
320 views
Determine the energy neded to put 5kg, initially at rest on Earth's surface, into geosynchronous orbit.
I get 2.9*10^8 where did
1 answer
asked by
Malcom
375 views
Determine the center of mass of a raft if a 72kg paddle is 0.81m from the stern and the 48kg paddle is 4.5m from the stern?
1 answer
asked by
Malcom
362 views
At what rate would a 75kg person travel during a slip/fall on a wet surface to the landing position.
1 answer
asked by
Mary Jo
323 views
Why is acceleration the same for all free-falling objects regardless of mass and distance? Please don't say according to this
5 answers
asked by
Lena
419 views
A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by v=3(i hat)+4(jhat), where
1 answer
asked by
James
321 views
A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by x=3m/s y=4m/s, where the
1 answer
asked by
James
410 views
What is the dimesnional formula of length, mass, volume, time, radius, force, frequency of evolution, velocity, gravity, tension
1 answer
asked by
Akash
343 views
I`m trying to find acceleration and I've been given distance and velocity. How would I find acceleration? (distance is distance
1 answer
asked by
Lena
391 views
How does mass affect the motion of objects falling freely under the influence of gravity?
1 answer
asked by
Lena
377 views
I have a follow-up to my question at 4:10 about work because I still can't figure it out.
F-F(friction)=ma F-F(friction)=2*3
3 answers
asked by
KC
403 views
A 69 kg roller blader, is on a frictionless surface at rest, he then tosses a 4.0 kg rock that has a velocity given by
4 answers
asked by
Jacob
435 views
If a ball is being lifted at a constant speed, does this mean that acceleration is 0 and therefore F=ma=0 and therefore no work
3 answers
asked by
Brigid
330 views
If two pith balls - one which is neutral and another which has a charge of -9.6 uC (micro-Coulombs) - are touched together, how
1 answer
asked by
Steven
338 views
Which force acts opposite of the direction of displacement of the object?
I think it would be friction...but could it be spring?
1 answer
asked by
LeRoy
372 views
Two rollerbladers throw a frisbie back and forth on a frictionless surface. Which does not change?
a. Momentum of an individual
1 answer
asked by
Jacob
342 views
Object A crashes into object B. A is more massive than B. Which is a true statement?
a. A experiences an impulse b. B experiences
1 answer
asked by
Jacob
482 views
Explain using an example how to charge an object positively using only a negatively charged object.
1 answer
asked by
Sam
423 views
If energy is 1/2 mv^2; and m and v are always positive....
How come the ground state energy of Hydrogen is a minus value? Charlie
1 answer
asked by
charlie
334 views
A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm
1 answer
asked by
Jacob
394 views
A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm
3 answers
asked by
Malcom
445 views
A gun that is spring-loaded shoots an object horizontally. The initial height of the gun is h=5 cm and the object lands 20 cm
1 answer
asked by
Malcom
435 views
Two pieces of paper are on a DVD movie disk. Paper A is farther from the center of the disk than Paper "B". The DVD disk starts
1 answer
asked by
Sandy
419 views
A serving of cereal has 800 cal (1 cal = .239 J). How far can you walk with this energy? Is the elapsed time important? Why is t
1 answer
asked by
Kyle
407 views
As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/s^2.At the instant the car begins to
2 answers
asked by
Lena
821 views
What is the de Brogile wavelength of an electon that strikes the back of the face of a TV screen at 1/10 the speed of light?
5 answers
asked by
Tonya
424 views
Three solid cylinder rods roll down a hill with the same linear speed. Rod R1 has a 1inch diamter, Rod R2 has a 2inch diameter,
1 answer
asked by
Sandy
373 views
Three solid cylinder rods roll down a hill with the same linear speed. Rod R1 has a 1inch diamter, Rod R2 has a 2inch diameter,
1 answer
asked by
Sandy
393 views
A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is
1 answer
asked by
Henri
431 views
1. What evidence did ancient Greek astronomers have that Earth does NOT move?
The answer is because of the lack of parallax, but
1 answer
asked by
Sally
343 views
What are some of the safety considerations and technologies used in designing a safe roller coaster ride?
4 answers
asked by
Lena
369 views
A tall glass (20cm) is floating in your bathtub. It weighs 60 grams and has a bottom area of 10cm^2. How deep will it sink into
1 answer
asked by
Kyle
353 views
Cybertron, the home of the Transformers, is 4.3 light yeras away from Unicron, a transforming planet. Omega Supreme, an Autobot
1 answer
asked by
Anonymous
329 views
A spaceship containing an astronaut travels at a speed of .6c relative to a second inertial observer. How much time, in hours,
3 answers
asked by
Anonymous
392 views
Show how the relativistic expression for the momentum of an object when traveling at a non-relativistic speed approximates to
1 answer
asked by
Anonymous
385 views
Hello recently I was asked to find the time it takes a satalite that is geocentric (that always stays above the same exact spot
4 answers
asked by
Physics
444 views
at what speed (in unit of "c") will an object's kinetic energy be 40% of its rest energy?
1 answer
asked by
ann
382 views
My problem is as follows: A 12 kg pail hanging on a rope is pulled up by a 1 HP motor. What's the max. speed the pail could
3 answers
asked by
Brigid
296 views
A cube of ice weighing 18 grams sublimes into vapor. How many liters of gas will you get?
1 answer
asked by
Kyle
367 views
I have a to find the frequency of "30 m radio waves" that have a given velocity. My question is does the "30 m" refer to
3 answers
asked by
Brigid
369 views
Let's say that the force of gravity on the equator of the Earth is 9.81 m/s^2 what is the magnitutde of gravity of something at
1 answer
asked by
HELP ME!
362 views
Jeff discovered an old water well in his backyard. He decided to measure its depth. He happened to have an audio oscillator of
1 answer
asked by
Jemmy
422 views
Why does a piece of iron behave like a temporary magnet when placed
in a magnetic field? SOLUTION: Iron consists of many small
1 answer
asked by
sally
426 views
if light touching a surface has an intensity of about 1000W/m^2, how many numbers of photons per m^2 per sec does this show?
wave
3 answers
asked by
Emma
407 views
v(subscript)t = g/k, describe the effects that changing the value of k would have on the terminal velocity of the object.
v(subsc
1 answer
asked by
Stacy
440 views
longitudinal waves ->move in the ____________as the medium movement.
transverse waves-> move____________to the medium movement.
1 answer
asked by
Tara
390 views
Hello can some one show and exlpain to me the derivation of this formula?
V = (Ft(mL^-1)^-1)^(2^-1) or simply V = sqrt (F/(m/L))
1 answer
asked by
Physics
402 views
Why can't we see around corners yet we can hear around corners?
3 answers
asked by
Izzy
381 views
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