April 24, 2014

Search: PHY - C of M

Number of results: 253

Find the kinetic energy of a particle with a mass of one gram moving with half the speed of light. Compare the answer with the one you would find using the nonrelativistic formula. Ans in units of x 10^13.
Thursday, October 12, 2006 at 6:54pm by slien

electric engineering - bobpursley
Hi bob: I have a follow up question fo my previous post under heading electrical engineering If you could help me that would be great! :-) see the other post which briefly explains the drawings here:
Tuesday, August 21, 2007 at 7:35pm by manny

Physical Science
What are the 4 nuclear forces? Out of the 4 which one is the strongest and which one is the weakest? Thanks THANK YOU As a side note, these are not nuclear forces. They are the four fundamental forces in nature, ...
Wednesday, April 11, 2007 at 4:04pm by Zach

Physics - Mechanics
A body is supported by a spiral spring and causes a stretch of 1.5cm in the spring. If the mass is now set in vertical oscillation of small amplitude, what is the periodic time of oscillation Doesn't angular frequency= sqrt (k/m) ? where k= mg/.0015 or 2PI/T= sqrt (g/.0015) ...
Thursday, April 12, 2007 at 9:49am by Febby-1

Steps of the scientific method
Saturday, June 12, 2010 at 8:10pm by Anonymous

Phy. Ed
What is weight transfer in exercise?
Thursday, January 16, 2014 at 5:56pm by Anonymous

VECTOR A has a magnitude of 55. Ax is 26. What are the two possibilities for Ay?
Sunday, August 22, 2010 at 6:22pm by ami

is the net force on venus is zero?
Friday, September 17, 2010 at 8:57pm by ami

A=ax+by and B=cx-dy If a = 3 , b = 4, c = 5 and d = 2. Find the direction of -A (in degrees): relative to +x
Thursday, February 27, 2014 at 11:34am by Dulla

Calculate the translational kinetic energy of O2 at a) 300. K b) 1000. K Speed is not given. Do I need to find the average speed first? The formula I'm using is Ek= 1/2m v^2 I notice I'm not given mass in the problem either. Would I use molar mass? You are on a tangent. You ...
Saturday, January 6, 2007 at 9:45pm by John

vector B has a magnitude of 186. By is 0. What are the two possibilities for Bx?
Sunday, August 22, 2010 at 6:21pm by ami

Explain whether or not my results 9.876m/s^2 verify that g=9.8m/s^2
Monday, August 30, 2010 at 8:27am by ami

PHY 171
How does a derivation differ from an experiment or theory?
Wednesday, February 6, 2013 at 2:22pm by Jessica

pease answer my phy questions urgenntly
Thursday, May 9, 2013 at 4:08am by shrish

Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, if any, will a diverging lens forms an erect image of a real object?
Thursday, February 1, 2007 at 10:21am by Lacy

Is that true the net force on the exit sign is 25N
Saturday, September 18, 2010 at 8:35pm by ami

Phy. Sci
A phase change form a gas to a soild?
Friday, October 22, 2010 at 10:25pm by Wyatt

phy. science
what normally warms up faster when heat is applied?
Friday, July 29, 2011 at 6:44pm by sue

phy science
A wave has a speed of 230 m/s and a frequency of 25 Hz. What is its wavelength?
Friday, November 16, 2012 at 7:56pm by biq juciy

at what projection will the range of a projectile equal to 2 times its maximum height?
Sunday, September 5, 2010 at 12:35pm by ami

phy 210
List advantages and disadvantages of various research methods
Sunday, November 28, 2010 at 2:42am by terry johnson

a car rolls down an incline starting from rest A graph
Tuesday, September 20, 2011 at 5:51pm by ana

How much heat is required to raise the body temperature of a 60.0-kg woman from 37.0 C to 38.2 C?
Wednesday, April 17, 2013 at 10:36am by jessica

Phy. Sci.
What are the forces on two charges of +0.43 C and +1.4 C, respectively, if they are separated by a distance of 3.7 m?
Friday, May 3, 2013 at 9:46pm by Bob

At what projection angle will the range of a projectile equal to 3 times its maximum height?
Tuesday, September 7, 2010 at 8:36pm by ami

why archimedes principle lab has more percentage errors or discrepancy than expected?
Monday, November 8, 2010 at 9:47am by mas

Phy. Science
What is the state of matter when non-convective rain leaves the cloud?
Wednesday, December 1, 2010 at 3:06pm by Mimi

phy 101
the velocity of a body performing simple harmonic motion is given as what
Wednesday, May 18, 2011 at 3:33pm by chuksmezie

A piece of plastic barely floats in water. If it has a mass of 20g, what is its volume?
Thursday, January 24, 2013 at 10:15pm by christ

phy 111
what are the dimension of power(time rate of change of expending energy)
Monday, October 14, 2013 at 8:21am by ugo

What causes surface tension? Please and thanks for the help. intermolecular forces, that is , molecules attracting other molecules, and "holding fast" together. Here are a couple of pretty good sites where you can read more about it.
Monday, April 9, 2007 at 5:41pm by Julie

What mass of steam at 100C must be added to 1.00 kg of ice at 0C to yield liquid water at 15C?
Thursday, December 2, 2010 at 9:38pm by ami

Calculate the average translational kinetic energy of a nitrogen molecule at 27 degree celcius
Thursday, January 24, 2013 at 10:14pm by christ

what assumption have you made in performing the free fall lab experiment and analyyzing the results?
Thursday, August 26, 2010 at 9:33am by ami

is that true or false A rock is thrown straight up into the air At the peak its acceleration was zero
Friday, September 17, 2010 at 8:29pm by ami

Your instructor asks you to compare positive and negative reinforcement and explain your conclusions in class. What will you report?
Tuesday, May 22, 2012 at 2:24pm by danni

with an average acceleration of -0.50 m/s^2, ho wlong will it take a cyclist to bring a bicycle with an intitial speeed of 13.5 m/s to a complete stop?
Friday, September 3, 2010 at 12:51am by Ally

Tinny insects such as mosquitoes can seat on the surface of water. Which physical principle makes this possible?
Thursday, January 24, 2013 at 10:09pm by christ

. Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.
Sunday, February 17, 2013 at 9:09pm by merle

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 N, and = 26.6. What are the weights w1 and w2?
Thursday, October 25, 2012 at 10:17pm by anthony

During space flight, astronauts often refer to forces as multiples of the force of gravity on Earth's surface. What does a force of 5g mean to an astronaut? If Earth were twice as massive but remained the same size, what would happen to the value of g? http://hyperphysics.phy-...
Saturday, October 28, 2006 at 4:28pm by Ronald

Compute the rms speed of a nitrogen molecule at 31.0C. At what temperature will the rms speed be half that value? At what temperature will the rms speed be twice that value? T = 31 C = 304 K Mass M = 28 g/(6.02*10^23) = 4.65*10^-23 g = 4.65*10^-26 kg The average kinetic ...
Friday, February 23, 2007 at 2:48am by Physics/Math

A drag-racing car accelerates forward because of the force exerted on it by the road. Why, then, does it need an engine? Explain. what is the answer plz
Friday, May 11, 2012 at 10:43am by MHD

A sled is initially given a shove up a frictionless 27.0 incline. It reaches a maximum vertical height 1.45 m higher than where it started. What was its initial speed?
Sunday, September 26, 2010 at 10:04am by mas

hi can somebody help me with this?? a solenoid of length L and radius R carries a current I in its N turns. what is the total energy stored in the magnetic field within the solenoid? Compute the inductance L using the solenoid formula. You should be able to find the formula in...
Sunday, August 5, 2007 at 10:47pm by spencer

98N-T=10a T-18.89N=3a I worked on the problem and I end up getting two equations but now I have to find T and a. For some reason, I cant solve it. Thanks
Sunday, February 28, 2010 at 8:50pm by Ana

is that true faster objects have a greater acceleration than slower objects?
Saturday, September 18, 2010 at 12:13pm by ami

Why gravitional force and centrietal force is same between earth and moon?
Saturday, September 18, 2010 at 9:22pm by ami

Pulling up on a rope, you lift a 4.05 kg bucket of water from a well with an acceleration of 2.50 m/s^2. 1-What is the tension in the rope?
Monday, July 18, 2011 at 6:37pm by lily

When light passes from air to glass, the light may change direction due to refraction. T or F?
Sunday, December 9, 2007 at 9:33pm by rachel

9. what is the relationship between the force and distance in an inverse square law? does force= the two charges?
Wednesday, October 17, 2007 at 10:19am by jennifer

A baseball is hit nearly straight up into the air with a speed of 24 m/s. (a) How high does it go? (b) How long is it in the air?
Thursday, August 26, 2010 at 3:48pm by ami

phy 111
two forces act on a point object as follows:100N at 170 and 100n at 50
Monday, October 14, 2013 at 8:47am by momo

phy 111
two forces act on a point object as follows:100N at 170 and 100n at 50
Monday, October 14, 2013 at 8:47am by momo

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.
Sunday, September 12, 2010 at 3:50pm by ami

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.
Sunday, September 12, 2010 at 10:13pm by ami

Jane, looking for Tarzan, is running at top speed (4.3 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?
Sunday, September 26, 2010 at 10:00am by mas

Phy 231
an 18-wheeler travels down the highway with a speed of 50 km/hr. each wheel has a 30 cm radius and a mass of 16 kg. what is the total kinetic(translational and rotational) energy of all 18 wheels?
Tuesday, July 31, 2012 at 10:33am by Sally

what can have a varying velocity and varying speed
Thursday, December 11, 2008 at 7:09pm by Jessica

The coefficient of static friction between hard rubber and normal street pavement is about 0.68. On how steep a hill (maximum angle) can you leave a car parked?
Sunday, September 12, 2010 at 2:39pm by ami

Phy 231
A CD-Rom starts from rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25 s. Through what angle does it rotate during this time?
Tuesday, July 31, 2012 at 10:35am by Sally

A scuba diver and her gear displace a volume of 71.0 L and have a total mass of 64.0 kg. (a) What is the buoyant force on the diver in sea water?
Thursday, November 4, 2010 at 3:47pm by mas

A major-league catcher gloves a 92 {\rm mi}/{\rm h} pitch and brings it to rest in 0.15 {\rm m}. 1-If the force exerted by the catcher is 803 {\rm N}, what is the mass of the ball?
Saturday, July 16, 2011 at 11:36pm by ivan

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?
Sunday, July 17, 2011 at 2:24am by lily

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?
Sunday, July 17, 2011 at 5:54pm by pop

In a capacitor, yuo have two plates, one is connected to a battery but other is not, how the other plate become charge ups.
Monday, February 7, 2011 at 12:35pm by ami

At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a mass of 32kg.
Thursday, January 24, 2013 at 10:15pm by christ

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. how high above earth? acceleration?
Tuesday, February 19, 2013 at 9:58am by faaash

A good scientific theory is one that has survived extensive scrutiny by the scientific community, but even so, why do we say that science does not conclusively prove anything.
Tuesday, May 31, 2011 at 9:28am by Anonymous

A golfer gives a ball a maximum initial speed of 37.0 m/s. 1-What is the highest tree the ball could clear on its way to the longest possible hole-in-one?
Saturday, July 9, 2011 at 8:40pm by elin

phy science
a 20,000kg railroad car is traveling at 3m/s when it collides and couples with a second, identical car at reat. What is the resulting speed of the combined cars?
Thursday, June 21, 2012 at 3:01pm by amy

A string of natural length L extends to a new length L' under tensile force F. If HookeS law applies, the work done in stretching the spring is ------------
Thursday, January 24, 2013 at 10:07pm by christ

A jet has a speed of 500m/s relative to the air in which it flies and is traveling north. There is a crosswind blowing from west to east at 100m/s. What compas heading does the plane appear to fly toward?
Sunday, September 16, 2012 at 4:00pm by anne

an ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure. What will the millimeter read when the temperature is 20
Tuesday, July 2, 2013 at 1:43pm by kate

Boy throws a penny into a wishing well at a velocity of 2 m/s and at an angle of 45 degrees below horizontal. If the penny takes 1.3 seconds to hit the water, how deep is the well?
Wednesday, March 5, 2014 at 3:36pm by Anonymous

Ok...I know this is a stupid question, but I need help! Ok, here it is: An object that has more electrons than it does protons will be _____ a CL^-1 ion. repelled by attracted to unaffected by I know that opposites attract and that same repells, but I am doubting myself with ...
Wednesday, February 9, 2011 at 12:29pm by Amber

is that true a block on a flat surface. The normal force on the block and weight of the block make up a third law pair.
Saturday, September 18, 2010 at 2:18pm by ami

Two point charges have a total charge of 525 C. When placed 1.15 m apart, the force each exerts on the other is 25.7 N and is repulsive. What is the charge on each? (Round your answers to the nearest C.)
Friday, January 21, 2011 at 7:44pm by ami

A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?
Wednesday, November 28, 2012 at 7:44am by Mary

Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface area of the filament is 810−6m2 and its emissivity is 0.92.
Thursday, January 24, 2013 at 10:13pm by christ

A 12N force is applied to a 20kg door If a frictional torque is present what will be the angular acceleration of the door The door is 80cm wide and I=1/3ml^2.
Saturday, October 23, 2010 at 2:17pm by ami

During an isovolumetric process, the pressure on the gas is doubled and the amount of gas is tripled. If the initial temperature of the gas is 300k, what is thefinal temperture.
Saturday, December 4, 2010 at 3:40pm by brandy

A slab of ice floats on a freshwater lake. What minimum volume must the slab have for a 50.0kg woman to be able to stand on it without getting her feet wet?
Friday, November 29, 2013 at 10:54pm by shree

My question is How do I calculate the resultant force if I have two forces one heading 3N and the other 4N. Tha angle between the line that is 3N and the resultant force is 30 degrees and the other one which is the 4N is 60 degrees How do I calculate the vector Can someone ...
Saturday, May 26, 2007 at 7:14am by QAE

Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses. A)larger mass kg B)sMaller mass kg
Sunday, September 19, 2010 at 6:47pm by ami

PHY [non-calc]
Resistors R1= 10ohms, R2= 40 ohms and R3= 70 ohms are connected in series. The total resistance in ohms of this combination is: A)0 B)120 C)28000 D) not enough info
Tuesday, May 31, 2011 at 3:43pm by alice

Determine the radial acceleration of the car at this time. If the curve were flat, what would the coefficient of static friction have to be between the tires and the roadbed to provide this acceleration with no slipping or skidding?
Saturday, September 18, 2010 at 4:44pm by ami

Phy new
____​2.​An object is thrown vertically upward with a speed of 25 m/s. How much time passes before it comes back down at 15 m/s? (Air resistance is negligible.)
Monday, October 1, 2012 at 9:23pm by Shan

could someone PLEASEE help me? Ive procrastinated and i'm really desperate... I'm supposed to teach the class about "relativistic momentum and mass" in terms of special theory of relativeity. i looked up infomation on google, but i dont understnad because its mostly university...
Monday, April 23, 2007 at 5:24pm by kay

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/12 of its value at the Earth's surface?
Friday, September 17, 2010 at 6:33pm by ami

does the mass of the object have a direct effect on the buoyant force or does the volume? Which of the two has no affect on the buoyant force?
Friday, November 5, 2010 at 3:20pm by ami

An ordinary glass is filled to the brim with 350.0 mL of water at 100C. If the temperature decreased to 19C, how much water could be added to the glass?
Wednesday, November 24, 2010 at 7:38pm by ami

Phy I
Two forces, 1 and 2, act on the 5.00 kg block shown in the drawing. The magnitudes of the forces are F1 = 47.5 N and F2 = 34.5 N. What is the horizontal acceleration (magnitude and direction) of the block?
Wednesday, October 3, 2012 at 12:41pm by Don

phy 111
two force act on a point object as follows: 100n at 170 and 100n at 50. find the resultant force
Monday, October 14, 2013 at 8:26am by ugo

An electron that is released from the rest in a uniform electric field of 30 N/C experiences a voltage change of 60 volts as the electron moves ____ m in the field. a. 5 b. 2 c. 3 d. 0 e. 10 f. 0.4 g. 30
Tuesday, May 31, 2011 at 3:50pm by Anonymous

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
Wednesday, April 11, 2012 at 12:56pm by Ricky

A baseball is thrown horizontally from the top of a cliff 50 meters up. The initial velocity of the ball is 10 m/s. How far from the base of the cliff will the ball land?
Wednesday, March 5, 2014 at 4:12pm by Anonymous

A SALT IS OBTAINED AS A REACTION BETWEEN A SALT (and water) IS OBTAINED AS A REACTION BETWEEN a base and an acid. See: I hope this helps. Thanks ...
Saturday, September 30, 2006 at 12:29pm by CAROLINE

A soccer ball is kicked with a speed of 9.15 m/s at an angle of 55.0^\circ above the horizontal. 1-If the ball lands at the same level from which it was kicked, how long was it in the air?
Saturday, July 9, 2011 at 8:36pm by elin

The velocity of a 2.5 kg block sliding down a frictionless inclined plane is found to be 1.25 m/s. 1.00 s later, it has a velocity of 4.15 m/s. What is the angle of the plane with respect to the horizontal (in degrees)?
Wednesday, October 16, 2013 at 11:37am by Anonymous

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