Questions LLC
Login
or
Sign Up
Ask a New Question
Physics
Page 87
Questions (146,278)
The escape speed from a planet of mass 2.5×10^24 is 7.0 km/s.What is the planet's radius?
Iam using the formula v=sqr(2GM/r) v=7
1 answer
asked by
James
370 views
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
316 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
379 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
318 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
374 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
361 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
321 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
417 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
320 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
409 views
What is the dimesnional formula of length, mass, volume, time, radius, force, frequency of evolution, velocity, gravity, tension
1 answer
asked by
Akash
340 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
388 views
How does mass affect the motion of objects falling freely under the influence of gravity?
1 answer
asked by
Lena
376 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
401 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
433 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
327 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
333 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
370 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
337 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
473 views
Explain using an example how to charge an object positively using only a negatively charged object.
1 answer
asked by
Sam
421 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
331 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
390 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
442 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
430 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
415 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
402 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
817 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
420 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
371 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
390 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
428 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
368 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
351 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
327 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
388 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
384 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
441 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
294 views
A cube of ice weighing 18 grams sublimes into vapor. How many liters of gas will you get?
1 answer
asked by
Kyle
366 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
368 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!
357 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
419 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
422 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
406 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
436 views
longitudinal waves ->move in the ____________as the medium movement.
transverse waves-> move____________to the medium movement.
1 answer
asked by
Tara
388 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
399 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (73)
Academic Subjects
Academic Success
Academic Support
Academics
Advanced Placement (AP) Courses
Applied Mathematics
Applied sciences
Baseball
Basic Science
Biology
Career guidance
Education
Education/Science
Educational Question
Engineering
Examinations
Experiments
Golf
High School
Homework Help
Homework Help Forum
Learning Science
Math
Math and Science
Math/Science
Mathematics
Mathematics and Science
Natural Science
Natural Sciences
Online Learning/Tutoring
Physical Science
Physical Sciences
Problem Solving
Problem-solving steps
Science
Science & Nature
Science & Research
Science and Astronomy
Science and Education
Science and Engineering
Science and Math
Science and Mathematics
Science and Measurement
Science and Medicine
Science and Nature
Science and Riddles
Science and Technology
Science Education
Science Experiment
Science Experiments
Science Fair Project
Science Fair Projects
Science or Mathematics
Science or Natural Sciences
Science, Technology, Engineering, Mathematics (STEM)
Science/Energy
Science/Engineering
Science/experimentation
Science/Mathematics
Science/Technology
Sciences
Scientific Concepts
Scientists
Soccer
STEM
STEM (Science, Technology, Engineering, and Math)
STEM (Science, Technology, Engineering, and Mathematics)
STEM (Science, Technology, Engineering, Mathematics)
Technical Support
Technology/Science
Tennis
Test Preparation
Word Problems